九年级化学试题答案（精选8篇）
1.九年级化学试题答案 篇一
九年级化学测试题及答案
一、选择题(每小题只有一个选项符合题意。共10个小题，每小题2分，共20分)
1. 下列物质中，属于纯净物的是( )
2. 以下物质，含有氧分子的是( )
A. O2 B. H2O C. CO2 D. SO2
3. 九九重阳，古人有登高赏菊的风俗。黄巢曾写有赞美菊花的诗句“冲天香阵透长安，满城尽带黄金甲。”浓郁的花香遍布长安的原因是( )
A. 分子的质量很小 B. 分子间有间隔 C. 分子在不断运动 D. 分子由原子构成
4. 下列实验基本操作中，正确的是( )
5. 化学物质的保存中，下列不需“密封”的是( )
A. 浓硫酸 B. 氢氧化钠 C. 澄清石灰水 D.大理石
6. 汽车安全气囊内的物质(比如叠氮化钠NaN3)能在碰撞后迅速反应，生成一种空气中含量最多的气体，该气体是( )
A. 氧气 B. 二氧化碳 C. 氮气 D. 稀有气体
7. 根据化学方程式A+NaOH== B+H2O推断，B,A的相对分子质量相差( )
A. 18 B. 22 C.40 D.58
8.下列现象能用质量守恒定律解释的是( )
A.化学反应中常伴随热量变化，有的放热，有的吸热
B.100g干冰完全汽化成100g气体
C.10gNaCl溶解在90g水中，成为100gNaCl溶液
D.一定量的煤完全燃烧后生成的所有物质的质量之和大于煤的原质量
9. 右图为某有机物(C9H10O3)的分子模型，该有机物是一种高效食品防腐剂。 下列说法中，不正确的是( )
A. 该有机物由3种元素组成
B. 该有机物能减缓食品变质
C. 该有机物分子中碳、氧原子的个数比为3:1
D. 该有机物中含氧元素的质量分数最小
10. 某粗盐样品中含有可溶性的氯化镁、氯化钙杂质和不溶性的泥沙。常温下，将 140g该粗盐样品溶解于水中，过滤得到不足3g泥沙和1000g溶液。取出500g溶液进行测定，其中含有镁元素1.2g，钙元素2g，氯元素42.6g。则原粗盐中氯化钠的质量分数约为( )
A.83.6% B. 86.3% C. 88.1% D. 91.6%
二、选择填充题(每小题4分，共20分。先在A、B、C中选择一个正确选项填在相应的括号内，然后在D处再补充一个符合题意的答案。每小题的选择与填充各2分)
11. 下列连线前后关系不正确的是( )
A. 限制使用塑料袋——减少污染 B. 研制自清洁玻璃——研究新材料
C. 开采海底石油——开发新能源 D. ______________
12. “三效催化转换器”可将汽车尾气中有毒气体处理为无毒气体。下图为该反应的微观示意图，其中不同的球代表不同种原子。下列说法中，不正确的是( )
A. 分子在化学变化中可分 B. 此反应一定有单质生成
C. 原子在化学变化中可分 D. ___________
13. 右图是元素周期表中的一格，依据图中的信息得到( )
A.该元素原子的质子数为14 B.该元素属于金属元素
C.该元素一个原子的最外层电子数为4 D.___________
14. 江西赣州蕴藏着丰富的钨矿资源，被称为“世界钨都”。冶炼金属钨(W)的重要反应是
X+3H2 W+3H2O。下列说法正确的是( )
A.该反应属于化合反应 B.X的化学式为WO3
C.该反应中钨元素的化合价没有变化 D.___________
15.一定质量的镁带在氧气中完全燃烧后生成氧化镁，其固体质量随时间的变化可用右图表示，则用(M2-M1)表示的质量是( )
A.生成MgO的质量 B.参加反应的Mg的质量
C.参加反应的O2的质量 D.___________
三.填空题(共48分)
16. (10分)请将五氧化二磷的化学式填在下表中相应的位置，并根据下表回答有关问题：[除(3)外，各小题均用序号填空]
(1)表中的物质属于单质的是 ，属于有机物的是 。
(2)表中的物质可用于人工降雨的是 ，可用于制肥皂、造纸等工业的碱是 。
(3)写出甲烷燃烧的化学方程式 。(2分)
(4)若要测定某烧碱溶液的酸碱度，不能选用下列选项中的 。
①无色酚酞溶液 ②紫色石蕊溶液 ③pH试纸
(5)我国福建生产一种槟榔芋，芋皮上含有一种碱性的物质——皂角素，皮肤沾上它会奇痒难忍。你认为可选用下列中的 来涂抹止痒。(2分)
①食醋 ②熟石灰 ③肥皂水 ④柠檬汁
17.(4分)下列数据是硝酸钾固体在不同温度时的溶解度。
(1)硝酸钾溶液中的溶剂是__________。
(2)20℃时，向 水中加入 硝酸钾，充分溶解后得到__________(填“饱和”或“不饱和”)溶液。
(3)20℃时，向 水中加入 硝酸钾，若使硝酸钾完全溶解，可以采用的方法是___________________。
(4)如图所示，小烧杯中盛放的是上述(2)中所得的硝酸钾溶液。若将少量的下列物质分别小心地加入到大烧杯的水中，不断搅拌，一定能够使小烧杯中有固体析出的是_____________(填字母)。
A. 冰 B. 浓硫酸 C. 硝酸铵
D. 干冰 E. 氢氧化钠 F. 氧化钙
18. (7分)钢铁是重要的金属材料。
(1)下列铁制品的用途中，利用金属导热性的是______________(填字母，下同)。
(2)目前世界上已有50%以上的废钢铁得到回收利用，其目的是___________。
A. 节约金属资源 B. 合理开采矿物 C. 防止钢铁生锈
(3)为防止水龙头生锈，其表面镀有一层铬。铁生锈的条件是______________。
(4)将生锈的铁制品放入盛有过量稀盐酸的洗槽中，观察到溶液变黄，有无色气泡逸出。
①写出发生反应的化学方程式 ______________________________________________________。(2分)
②氯化铁溶液可以作净水剂。欲将上述所得溶液中含铁的物质以氯化铁形式回收，加入过氧化氢溶液反应可生成氯化铁和水。已知每生成162.5g的氯化铁，就同时生成18g的水。则该反应的反应物的化学式为_______________。(2分)
19.(8分)根据以下A、B、C、D四幅元素含量示意图，试推测元素分布领域，将图下字母序号填在相应位置。
(1)分布在人体中的是 ;
(2)分布在海水中的是 ;
(3)分布在地壳中的是 ;
(4)分布在丙氨酸(C3H7O2N)中的是 。
20.(10分)消毒剂在公共场所进行卫生防疫时发挥着重要的作用。
(1)氢氧化钠能杀灭细菌、病毒和寄生虫卵等，它的俗名为______________。
(2)二氧化氯(ClO2) 可用于饮用水的杀菌消毒，其中氯元素的化合价为________。
(3)氧化钙与水反应后生成一种具有消毒能力的物质，该物质的化学式为________。
(4)过氧乙酸(CH3COOOH)是被广泛使用的高效消毒剂，它不稳定易分解放出一种常见的气体单质，并生成醋酸(CH3COOH)，该反应的化学方程式为______________________________________________________;若一瓶久置的`过氧乙酸溶液已完全分解，所得溶液中醋酸的质量分数为12%，则原溶液中过氧乙酸的质量分数为___________%(结果保留一位小数)。
21.(9分)A~G是初中化学常见的7种物质，其中至少有一种物质是无色气体，且A与G含有相同的金属元素。它们在一定条件下转化关系如下图所示，其中部分反应物或生成物已略去。
请针对以下两种情况回答问题。
(1)若A中两种元素的质量比为7:3 ，F是一种红色金属，则F的化学式为________;写出反应①、③的化学方程式：
①_____________________________________________;(2分)
③_____________________________________________。(2分)
(2)若F与C常温下可以反应，②、③属于同一种基本反应类型，则A的化学式为______;写出反应①的化学方程式_________________________________________;(2分)反应②的基本反应类型是______________。
四、实验探究题(34分)
22.(6分)炭雕(见右图)是一种集观赏与空气净化为一体的产品。这种产品可对车内及室内空气中的一氧化碳、甲醛等有害气体进行有效吸附。某课外小组想对炭雕产品进行初步探究。
[提出问题]炭雕产品中是否含有碳元素。
[猜想与假设]炭雕产品中含有碳元素
[查阅资料]
①碳在空气中完全燃烧只生成二氧化碳，不完全燃烧
生成二氧化碳和一氧化碳。
②新鲜的人或动物血液，遇一氧化碳由鲜红变为暗红。
[设计实验]通过检验炭雕产品燃烧产物，证明炭雕产品中含有碳元素。组装所需仪器如下图。
(1)A装置的作用为吸收空气中的水和二氧化碳，其中氧化钙与水反应的化学方程式为 。
(2)实验开始后，C装置中有白色沉淀，C装置发生化学反应方程式为 ，E装置中新鲜的鸡血变为暗红色，则证明 。
[讨论与评价]
(3)小红认为可以在A、B装置间，增加澄清石灰水，目的是 。
(4)小明认为可以用右图所示的装置，替换原装置中的E装置，你认为可以吗?主要原因 。
[初步结论]炭雕产品中含有碳元素。
[继续探究]请你对炭雕产品准备进一步探究的内容，提出合理的建议 。
参考答案:
1.B 2.A 3.C 4.C 5.D 6.C 7.B 8.D 9.D 10.A
11 C;杜绝非法开采矿山——节约资源
12. C ;分子在化学变化中不可分等
13 A;该元素的原子核外有14个电子等
14 B;该反应中钨元素的化合价发生了变化
15 A;生成氧化镁中镁元素的质量
16.(8分)P205 (1)② ① (2)④ ③ (3)CH4+2O2 ====2H2O+CO2：
(4)①② (5)①④
17.(1)水 (2)饱和 (3)加水(或升温) (4)ACD
18.(1)B (2)A (3)与潮湿的空气接触
19. (1)B (2)C (3)A (4)D
20.(1)烧碱;(2) 4;(3)Ca(OH)2;(4)2CH3COOOH== 2CH3COOH O2↑;14.7%
21.(1) ① ③
(2) 复分解反应
22.(共6分，每空1分)
(1)CaO + H2O = Ca(OH)2 (2)Ca(OH)2 + CO2 = CaCO3↓+ H2O 炭雕产品燃烧产物中有一氧化碳产生
(3)检验二氧化碳是否除尽。
(4)不可以，因在E装置中通入的为一氧化碳和氧气混合气体，高温可能会爆炸。
炭雕产品为何能吸附一氧化碳和甲醛等有害气体。或炭雕产品中碳元素以何种物质形式存在等。
2.九年级化学试题答案 篇二
2、将答案用蓝色、黑色钢笔或圆珠笔直接写在答题纸上。
Ⅰ . 阅读理解 (共17小题;每小题2分, 满分34分)
阅读下面材料, 从每题所给A、B、C、D四个选项中选出最佳答案。
(A)
Different weather makes people feel different. It infl uences health, intelligence and feelings.
In August, it is very hot and wet in the southern part of the United States. People there have heart troubleand other kinds of health problems during this month. In the Northeast and the Middle West, it is very hotat some times and very cold at other times. People in these states ( 州 ) have more heart trouble after theweather changes in February or March.
The weather can also infl uence intelligence. For example, in a 1983 report by scientists, IQ ( 智商 ) of agroup of students was very high when a very strong wind came, but after the strong wind, their IQ was 10%lower. The wind can help people have more intelligence. Very hot weather, on the other hand, can make itlower. Students in many schools of the United States often get worse on exams in the hot months of the year (July and August) .
Weather also has a strong infl uence on people’s feelings. Winter may be a bad time for thin people. Theyusually feel cold during these months. They might feel unhappy during cold weather. But fat people may havea hard time in hot summer. At about 18℃ , people become stronger.
Low air pressure ( 气压 ) may make people forgetful. People leave more bags on buses and in shops onlow-pressure days. People feel best at a temperature of about 18℃ .
Are you feeling sad, tired, forgetful, or unhappy today? It may be the weather’s problem.
根据短文内容, 从A、B、C、D四个选项中选择最恰当的答案。
1. What can cause problems on health?
A. Hot and wet weather B. A strong wind C. Warm weather D. Low air pressure
2. A report shows that people may have more intelligence when ______ comes.
A. rain B. a strong wind C. very hot weather D. low air pressure
3.According to the writer, fat people may feel bad in ______ weather.
A. cold B. cool C. warm D. hot
4. The writer wants to tell us that ______.
A. hot and cold weather infl uences all people in the same way
B. weather infl uences people’s behavior
C. IQ changes when weather changes
D. people feel good on low pressure days
5.Which is the best title for this passage?
A. Hot Weather Causes Health Problems
B. Different Weather Makes People Feel Bad
C. Weather Infl uences Feelings
D. Weather Infl uences Health, Intelligence and Feelings
(B)
Qi Haoran, a Junior 1 student, was quite busy over the past winter vacation–and not just with homework. Qi, together with 10 other classmates made a volunteer group to call on people to join the Clean Your Plate Campaign (“光盘行动”) .
The 11 students went to many restaurants and told people the importance of saving food. “Excuse me, do you know that 950 million people around the world still haven’t got enough to eat? Please don’t waste food.” They would say this kind of thing hundreds of times every day.
The Clean Your Plate Campaign began on the Internet in January. It calls on people to reduce food waste.
China in these years had serious problems with wasted food. CCTV reported in January that the food Chinese people waste every year is enough to feed 200 million people for a year.
Chinese people are well known for being hospitable and generous. Many even feel that they lose face if their guests have eaten all the food.
Luckily, the campaign has got the support of many. In a restaurant in Xinjiang, the owner give the guests who have eaten all that they ordered a sticker ( 贴花 ) . People can enjoy a free meal when they have 10 stickers. More than 750 restaurants in Beijing have begun to offer smaller dishes and encourage their guests to take leftovers ( 剩饭剩菜 ) home
To reduce food waste is a big task, and it needs time. It’s important that everyone does their bit, just like Qi. Did you fi nish your meals today?
根据短文内容, 从A、B、C、D四个选项中选择最恰当的答案。
6. What did the 11 students do in the winter vacation?
A. The helped each other with homework.
B. They opened a restaurant together.
C. They volunteered for a campaign.
D. They collected money from customers in restaurants.
7. In this passage the underlined word “call on ” means ______
A. 打电话B. 号召C. 拜访D. 叫喊
8. The Clean Your Plate Campaign calls on people to _____.
A. do volunteer work B. work part time in restaurants
C. cut down on food waste D. wash your plates after dinner
9. From Paragraphs 4-5, we learn that _____.
A. wasting food is a serious problem in China
B. Chinese people waste the most food in the world
C. Chinese people want to show off that they are rich
D. most Chinese people are afraid of losing face at the table
10. What did the restaurant in Beijing do to support the campaign?
A. The owner would have dinner with those who had eaten up their food.
B. It offered a free meal to the guests who had fi nished all their food ten times.
C. It gave stickers to the guests who ordered small dishes.
D. It encouraged customers to take leftovers home.
(C)
John and Bobby joined the same company together just after they completed their university studies the same year. Both of them worked very hard. Several years later, however, the boss promoted ( 提拔 ) Bobby to manager but John was still a worker. John could not take it, and gave his resignation (辞职书) to the boss. He complained that the boss did not think much of those who were hard -working, but promoted only those who fl attered him.
The boss knew that John had worked very hard for the years. He thought a moment and said, “Thank you for what you said, but I hope you will do one more thing for our company before you leave”
John agreed. The boss asked him to go and fi nd anyone selling watermelons in the market. John went and returned soon. He said he had found a man selling watermelons. The boss asked how much they cost every kilogram. John shook his head and went back to the seller to ask and returned to tell the boss $1.2 every kilogram.
The boss told John to wait a second, and he called Bobby to come to his offi ce. He asked Bobby to go and fi nd anyone selling watermelons in the market. Bobby went and returned, saying, “Boss, only one person is selling watermelons. $1.2 every kilogram, and $10 for 10 kilograms. The seller has 340 melons. On the table there are 58 melons, and each weighs about 2 kilograms. They were brought from the South two days ago. They are of good quality.”
Hearing what Bobby said, John realized the difference between himself and Bobby. He decided to stay and learn from Bobby.
11. How did John feel when Bobby was promoted to manager?
A. Angry. B. Nervous. C. Unlucky. D. Helpless.
12. The boss gave John a task because______________.
A. he wanted John to do more for his company
B. he wanted John to learn more about himself
C. he wanted to punish John for what he said
D. he wanted to prove what John said was right
13. We can infer from the passage that_____________.
A. Bobby was unselfi sh B. John was lazy
C. the seller was dishonest D. the boss was wise
14. What can we learn from the passage?
A. The boss should treat all his workers in a fair way.
B. The boss should not promote one who fl atters him.
C. One should not only work hard but also use his head.
D. One should try to get every detail of watermelons.
(D)
No one wants to look silly or do the wrong thing at a new job. It is important to make the right impression from the very f irst day. You will face new people. You will be in a new place. It may be diffi cult to know what to do. Here are fi ve tips to help you make it through the fi rst day in a new job:
First impression can last forever. Make sure you make a good one. Before your fi rst day, fi nd out if your new job has a dress code (rules about what you can wear to work) . If so, be sure to follow it. No matter what, always be neat and clean.
Get to work on time . Give yourself an extra 15 minutes to make sure you arrive on time.
Pay attention to introductions. You may be introduced to your workmates. They will be important to you. They are the ones who will answer your questions when the boss is not around.
Ask plenty of questions. Make sure that your supervisor has told you what is expected of you. If you are not told your duties, ask for a list. Set daily and weekly goals for yourself.
Never be the fi rst one to leave. Watch what others do at the end of work hours. It does not look good for you to be eager to leave.
15. What does the writer think you should do on your fi rst-day work ?
A. We should dress in a right way.
B. We should learn how to introduce ourselves.
C. We should know our duties.
D. We should know our workmates well.
16. Which of the following statements is TRUE according to the passage?
A. You should be the fi rst one to arrive at work.
B. You should ask your workmates for your duties.
C. You should not be eager to go back home at the end of work hours.
D. You are required to arrive 15 minutes earlier.
17. From the passage, your supervisor is most likely your _______________.
A. visitor B. teacher C. workmate D. leader
Ⅱ . 完形填空 (25小题, 每小题1分, 共25分)
(E)
先通读短文, 掌握其大意, 然后从所给的选项中选出一个可以填入相应空白处的最佳答案, 并将其标号填入答题卡相应的位置。
I have a friend named Monty Roberts who owns a horse ranch ( 牧马场 ) . He has let me use his __18__ to raise money for youth at risk programs.
The last time I was there he told me his story. When he was young, his family is too __19__ to have a house to live in. As a __20__, when he was in high school, he was asked to write a paper about __21__ he wanted to be and do when he grew up. That night he wrote a seven-page paper describing his goal of __22__ a horse ranch. He also drew a picture to show a 4, 000-square-foot house that would sit on a beautiful farm. The next day he handed it in to his __23__. Two days later he received his paper back. On the front page was a large red F. Roberts asked, “Why did I receive an F?” He teacher said, “This is a (an) __24__ dream for a young boy like you. Owning a horse ranch requires a lot of money.” Then the teacher added, “If you will rewrite this paper with a more realistic goal, I will reconsider your __25__.”
The boy went home and thought about it for a __26__ and hard time. He asked his father what he should do. His father said, “Look, son, you have to __27__ your own mind on this. Finally, after sitting with it for a week, the boy turned in the same paper, making no __28__ at all. He told his teacher “you could keep the F and I __29__ keep my dream.
Monty tell me this __30__ because I am sitting in his 4, 000-square-foot house in the middle of my 200acre horse ranch. He said a lot of kids’ __31__ can be stolen. Don't let anyone steal your dreams. Follow your heart, no matter what. __32__ he had enough gumption ( 毅力 ) not to give up my dream.
18. A. name B. company C. ranch D. school
19. A. small B. busy C. poor D. lazy
20. A. present B. return C. punishment D. result
21. A. what B. which C. whom D. who
22. A. renting B. donating C. owning D. kitchen
23. A. teacher B. father C. friend D.wife
24. A. surprised B. great C. terrible D. unrealistic
25. A. work B. grade C. family D. ability
26. A. easy B. long C. short D. hurry
27. A. change B. rewrite C. have D. give up
28. A. decision B. reason C. excuse D. changes
29. A. never B. still C. sometimes D. even
30. A. square B. story C. house D. teacher
31. A. money B. house C. dreams D. hobbies
32. A. Quickly B. Suddenly C. Unluckily D. Fortunately
(F)
How would you like to go to a school like this one in Oxford, England? There are no formal classes. The students ___33___ from one group to another when they want to. ___34___ may fi nd students who are fourteen, fi fteen or sixteen years old all in the same ___35___. They work at their own speed. ___36___ tells them what they should or shouldn't be doing. The day I ___37___, school began at nine. Some students were working ___38___ a tape recorder and listening to their own voices. Others were watching a TV program ___39___ physics. A third group was working in the library. I didn't see anybody just sitting doing ___40___. Nobody was wasting time. ___41___ the students taking a break in the cafeteria were having a ___42___ on politics.
33. A. move B. study C. travel D. stay
34. A. You B. A man C. He D. I
35. A. grade B. school C. class D. group
36. A. Somebody B. A teacher C. Nobody D. The group leader
37. A. visited B. moved C. studied D. stayed
38. A. on B. with C. for D. Through
39. A. in B. according to C. on D. by
40. A. something B. much C. anything D. nothing
41. A. However B. Even C. Also D. 0nly
42. A. drink B. show C. debate D. quarrel
Ⅲ . 短文填空 (共20小题, 每小题1分, 满分20分)
(G)
阅读下面短文, 根据上下文填入适当的词语, 或使用括号中的词语的适当形式填空, 并将答案填写在答题卷上标号为43—52的相应位置。
Do you know __43__ countryside is changing these years in some countries?
Life has becoming diffi cult in many villages, and some are becoming empty. There are a lot of __44__ for this. Firstly Young people from __45__ usually want to live somewhere livelier, and they often move to thetowns and do not return. Secondly, people move to the cities to fi nd work, as there are often very few __46__ in the countryside. Sometimes villages remain because people from the cities have bought a“second home”in the villages __47__ they come and stay at weekends. The price of houses __48__ (go) up and people like to buy a house in the countryside. __49__ problem is that it is becoming more and more diffi cult for farmers to make money from their farms. __50__ they sell their land and fi nd another job.
All these things mean that many villages are __51__ (fi ght) to survive (留下来) . We can only hope that they will remain. The countryside would be sadder and uglier places __52__ them.
(H)
阅读下面短文, 根据上下文填入适当的词语 , 首字母已给出。
Henry works in a factory. He comes from a poor family and was in school for only four years. He has to do the hard work, but he is p__53__ less. He likes to watch football matches very much and s__54__ much time on them.
One afternoon there was a big football match on the playground. He borrowed some money from his friend and h__55__ there. There were a lot of people there. And all the tickets were sold out. He was sorry for it. He saw a pole ( 杆子 ) outside the playground and climbed it quickly. A policeman came and said, “It is d__56__ to stay on it! Come down!”
“Wait a m__57__, please!”Henry said and just at that moment the policeman heard cheers on the playground and asked in a hurry, “Which team has kicked a goal?”“Ours!”“W__58__! You can stay there. But take care!”The policeman said h__59__ and left. When the match would be soon over, he came back again and asked, “Who has won?”“Theirs, 3:2.”“Come down, ”the policeman said a__60__. “Such a match is not worth w__61__!”
Henry had to come down. But soon they heard cheers again. The policeman said in a hurry, “ C__62__ up and see who has kicked a goal.”
IV阅读并按要求完成各题 (共11小题, 每小题2分, 共22分)
( I )
“USA? Britain? Which country is better to study in?” We often hear such discussion. As China opens its door, studying abroad has become a dream for many Chinese students. They want to learn about the world. It’s true that studying abroad can help students develop themselves. Language skills will improve and it may be easier to fi nd a job.
But there are problems that should be considered. Language is the fi rst. Students must spend a lot of time learning another language and getting used to a different culture.
Students must also learn to live without parents’ care and deal with all kinds of things they haven’t had to do before, like looking after themselves. There are reports about Chinese students abroad sinking in an ocean of diffi culties and giving up easily. When they have to take care of themselves, it is hard for the students to study well.
Finally, studying abroad brings a heavy burden to the family. For most Chinese parents, the cost of studying abroad is very high. But is it worth it?
We know that there are many famous people who succeed in great things through their hard work in China. Liu Xiang is a good example. Once an American teacher invited him there but he refused. He kept training hard with his Chinese teacher. He surprised the world when he won a gold medal at Athens
Olympics. So when you wonder which country is better to study in, consider whether studying abroad is the right choice.
根据文章内容完成表格
(J) a rich and fa
Jean is a bright young woman who comes from a rich and famous family. She goes to a good university and has everything that money can buy. Well, almost everything. (71) The problem is that the people in Jean’s family are so busy that they can hardly fi nd time to be with her. In fact, Jean is quite lonely.
So Jean spends a lot of time on her QQ. She likes being anonymous (匿名) , talking to people who do not know about her famous family and her rich life. She uses the name Linda on QQ and has made a lot of friends who she keeps in touch with quite often.
Last year Jean made a very special friend on QQ. His name was David and lived in San FranciscoDavid was full of stories and jokes. He and Jean had a common interest in rock music and modern dance. (72So it always took them hours to talk happily on QQ and sometimes they even forgot their time. Of coursethey wanted to know more about each other. David sent a picture of himself. He was a tall, good-lookingyoung man with a big, happy smile. As time went by, they became good friends and often sent cards andsmall things to each other.
When Jean’s father told her that he was going on a business trip to San Francisco, she asked him to let her go with him so that she could give David a surprise for his birthday. She would take him the latest DVD of their favorite rock singer. But when she knocked on David’s door in San Francisco, she found that her special friend was a twelve-year-old boy named Jim!
A. 根据短文内容简要回答下列问题:
69.Why did Jean think David, his friend on QQ, was special?
___________________________________________________________________
70. What will Jean’s QQ friend’s real name and age?
___________________________________________________________________
B. 将短文中划线的两个句子译成汉语。
71._________________________________________________________________
72._________________________________________________________________
C. 请给短文拟一个适当的标题。
73._________________________________________________________________
V.智力测试 (IQ) (共5小题, 计5分)
开动脑筋, 完成下列英语智力题!
74. There are 49 birds and hares. A bird has two legs and a hare has four. There are 100 legs in all. So there are ______birds and _______.
A. 45, 45 hares B. 23, 26 hares C. 42, 6 hares D. 48, 1 hare
75. what 5-letter word has 6 left when you take 2 letters away?
76. Two men, starting at the same point, walk in opposite directions for 4 metres, turn left and walk another 3 metres. What is the distance ( 距离 ) between them?
A. 2 metres B. 6 metres. C. 10 metres. D. 12.5 metres.
77. I see three men on a bus. A speaks English and Japanese. C only talks with B. B can speak Chineseand English. What does C speak? He speaks ________.
A. English B. Japanese C. Chinese D.English and Japanese
78.. What would George Washington be most famous for if he were alive today?
A. A president B. A great American. C. A father of his son. D. His old age.
VI. 英译汉。 (4分)
79. Look before you leap.
80. Rome was not built in a day.
81. Practice makes perfect.
82. Action speak louder than words.
VII. 书面表达 (Writing) (10分)
在日常生活中, 因特网起着越来越重要的作用。请根据下表所给提示为某英文报写一篇题为On the Internet的征文稿。
英特网的主要用途 :
信息 : 看国内外新闻、获取其它信息
通讯 : 发e-mail、打电话
学习 : 上网上学校、阅读各种书籍、自学外语
娱乐 : 欣赏音乐、观看体育比赛、玩棋牌游戏
生活 : 购物
注意:1. 征文稿必须包括表内所有信息, 行文连贯通顺;
2. 词数80词;
3.九年级化学试题答案 篇三
1～5 ABDAB
6～10 CCABD
11～15 ACCDB
16～20 CBDCA
21～25 BCBBA
One possible version：
Problems among Teenagers
As a teenager， I find it hard to relax myself. Not only my teachers but also my parents give me a lot of homework to do. At weekends I have to go to the piano class. I am not allowed to play computer games. I have no time to do sports. Its not good for health， isnt it？ I asked other students and they felt the same.
I think we should talk to our teachers and parents about it. We should make good plans for our study. Our parents should allow us to play computer games after schoolwork. Parents can limit the game time. We just need relaxing time because of too much homework.
Our parents are too busy. They work hard and they seldom stay with us. We hope our parents can stay with us at weekends. We can go outing or do sports with our parents together.
【2015中考英语语篇及作文专项训练（八）参考答案】
1～5 BCACC
6～10 DBBAB
11～15 ABBCD
16～20 CBBDA
21～25 ACBDA
One possible version：
I Expect My School Life
I will study in a high school soon. Everything will be new to me.
I hope my school is big and clean with a large dining room. And the library is full of different kinds of books. So I can read them in my spare time. I can get along well with my teachers and classmates. I and my classmates can help each other. At the same time， I expect my school life is colorful. After class I can listen to music， play chess and basketball. To get more useful knowledge or information， I can surf the Internet. I will keep a good eating habit， play sports to keep healthy， and try my best to make great progress.
4.九年级数学月试题及答案 篇四
一. 选 择题 (本题有10个小题, 每小题3分, 共30分)
1、 的倒数是 ( )
A、-3 B、3 C、 D、
2、下列计算正确的是 ( )
A、 B、
C、 D、
3、两圆半径分别为3和4，圆心距为8，这两圆的位置关系是 ( )
A、内 切 B、相交 C、外切 D、外离
4、下列四个图形中，既 是轴对称图形，又是中心对称图形的是 ( )
5、李明为好友制作一个(如图)正方体礼品盒，六面上各有一字，连起来就是预祝中考成功，其中预的对面是中，成的对面是功，则它的平面展开图可能是
( )
6、如图PA、PB分别是⊙O的切线，A、B为切点，AC是⊙O的直径，已知BAC=350
则P 的度数等于 ( )
A、700 B、450 C、600D、350
7、下列判断正确的是
A. 打开电视机，正在播NBA篮球赛是必然事件 ( )
B.掷一枚硬币正面朝上的概率是 表示每抛掷硬币2次必有1次反面朝上
C.一组数据2，3，4，5，5，6的众数和中位数都是5
D. 甲组数据的方差为0.24，乙组数据的为方差0.03，则乙组数据比甲组数据稳定
8、抛物线 的顶点坐标是 ( )
A、(3，1) B、(-3，1) C、(-9，1) D、(9，-1)
9、如图:小军要测量河内小岛B到河岸L的距离，在A点测得BAD=300，在C点测得BCD=600又测得AC=10米，则小岛B到河岸L的距离为 ( )
A、 B、5 C、 D、5+
10、如图:反比例函数 的图像经过点A(2,1)，若y1则x的取值范围是 ( )
A. x B. x C. x0或0
二、填空题(本题有7个小题, 每小题3分, 共21分)
11、函数 中，自变量 的取值范围是 。
12、新版人民币中一角硬币的`直径约为0.022m，把0.022用科学计数法表示为 。
13、如果方程 的两个根是Rt△ABC的两条直角边，则斜边为 。
14 、某青年排球队12名队员的年龄情况如下 ：
年龄(单位：岁)181922
人 数14322
则这个队队员年龄的中位数是
15、如图将半径为4cm的圆形纸片折叠后，圆弧恰好经过圆心O，
则折痕AB的长度是
16、一个圆锥的底面半径为3，母线长为5，这个圆锥的侧面积是
17、用火柴棒摆金鱼:如图所示，摆第n个金鱼需用火柴棒的根数是
三、解答题(共4题，每题6分，共24分)
18、计算：
19、解方程：
20、如图 ABCD中，O是对角线AC的中点，EFAC交CD于E，交AB于F，问四边形AFCE是菱形吗?请说明理由。
21、甲乙两人以相同路线前往距离单位10km的培训中心参加学习，图中L甲、L乙分别表示甲乙两人前往目的地所走的路程s(km)随时间t(分)变化的函数图象，试求多少分钟后，两人相遇?
四、(本题7分)
22、不透明口袋里装有白、黄、蓝三种除颜色外都相同的球，其中白球2个黄球1个，从中任意摸出一个是白球的概率为 .
(1)试求袋中蓝球的个数。
(2)第一次任意摸一个球(不放回)第二次再摸一个球，请用树状图或列表法求两次摸到的都是白球的概率。
五、(本题8分)
23、某校为了了解九年级学生体育测试成绩情况，以九年级(1)班学生的体育测试成绩 为样本，按A、B、C、D四个等级进行统计，并将统计结果绘制如下两幅统计图，请你结合图中所给信息解答下列问题：
(说明：A级：90～100分;B级：75～89分;C级：60～74分;D级：60分以下)
(1)求出D级学生的人数占全班总人数的百分比;
(2)求出扇形统计图中C级所在的扇形圆心角的度数;
(3)若该校九年级学生共有500人，请你估计这次考试中A级和B级的学生共有多少人?
六、(本题8分)
24、在Rt△ABC中，ACB=900，D是AB边上一点，以BD为直径的⊙O与AC相切于点E，连接DE并延长与BC的延长线交于点F。
(1)求证：BD=BF
(2)若BC=6，AD=4求⊙O的半径。
七、(本题9分)
25、去年冬天我国部分地区遭受了罕见的旱灾，旱灾无情人有情，某单位给一个中小学校捐献一批饮用水和蔬菜共320件，其中饮用水比蔬菜多80件。
(1)求饮用水和蔬菜各有多少件?
(2) 现计划租用甲乙两种货车共8辆，一次性将这批饮用水和蔬菜全部运往该中小学，已知每辆甲种货车最多可装饮用水40件和蔬菜10件，每辆乙种货车最多可装饮用水和蔬菜各20件，则运输部门在安排甲乙两种货车时有几种方案?请你帮助设计出来。
5.九年级英语上册期中试题及答案 篇五
从每小题所给的四个选项中，选出可以填入空白处的最佳答案。
( )1. — This is ______ useful guidebook.
— I agree with you. We may get lost without it.
A. a B. an C. the D. /
( )2. In my opinion, parents should get their kids to face difficulties ____ their own.
A. by B. on C. with D. for
( )3.Mrs Brown, don’t worry about D aming. He is old enough to take care of ______.
A. himself B. herself C. yourself D. itself
( )4. — Amanda, what’s your favourite subject?
— ______, though it’s not easy for me.
A. Autumn B. Chemistry C. Swimming D. Electricity
( )5. — Amy, can you help me look for my pet cat? It went ______ just now.
— Oh, sure.
A. bad B. sick C. wrong D. missi ng
( )6.Where are your dad and brother, Lisa? We’ve been waiting for them for ten minutes.
Well, Dad ______ Tom for losing his glasses in the living room.
A. punishes B. is punishing
C. punished D. will punish
( )7. — Sara, I hear your son is sick.
— Yes, he has had a high fever. That’s why I want to take two days ______.
A. off B. back C. over D. on
( )8.— Xi’an is such a beautiful city. What about ______ here for two more days?
— Good idea. And we can go to visit the Terracotta Army.
A. moving B. leaving C. remaining D. reaching
( )9. Old Tom is unhappy because ______ has visited him since he moved to town.
A. everybody B. somebody C. anybody D. nobody
( )10. More than ______ people visited the ______ car exhibition.
A. two million; eight-day B. two millions; eight days’
C. two millions; eight-day D. two million; eight day’s
( )11. Celia, you’d better ______ the TV now. It’s time to go to bed.
Oh, Mum, the talk show will be over soon. Please give me ten more minutes.
A. turn on B. turn up C. turn off D. turn down
( )12. — Please ______, or you will have to get out of the reading room.
— Oh, sorry.
A. stop shouting B. stop to shoutC. stopping shouting D.stopping to shout
( )13. Mr Green asks us to hand in our reports ______ we finish them.
A. before B. as soon as C. though D. because
( )14. — I’ve decided to go to Las Vegas to spend my summer holiday.
— ______. What about going there together?
A. So do I B. So have I C. So did I D. So will I
( )15. — I came first in the long jump.
— ______. I’m so proud of you.
A. Good luck B. Have fun C. Well done D. You’re joking
二. 完形填空 (每小题1分，共10分)
通读下面的短文，掌握其大意，然后从各小题所给的四个选项中，选出一个最佳答案。
Mr Oliver was the richest man in town. He didn’t have to 16 . All day long the only thing he did was to sit at his window and watch everyone else work hard for a living.
Every 17 Mr Oliver sat at hi s window and waited for people to come home from work. 18 after a busy day, they rested and looked out at the stars and the moon at night. But soon 19 all went to bed, fell asleep and dreamed. After a while, Mr Oliver went to bed, too, 20 he didn’t fall fast asleep.
One night, Mr Oliver heard a 21 at his window. He found a little injured bird on his windowsill (窗台).
“Poor little thing,” Mr Oliver said 22 . “The city is no place for birds.”
He carried the little bird inside and took care of its injured wing (翅膀).
Mr Oliver worked and worked. 23 , he fell asleep with the little bird in his hands. And then he dreamed about a 24 for birds.
The next morning, Mr Oliver hurried outdoors and 25 to work. He wanted to build a beautiful park for birds with trees and beautiful flowers in it.
From that day on, Mr Oliver never had difficulty falling asleep and he became a happy and busy man.
( )16. A. wait B. worry C. work D. drive
( )17. A. morning B. noon C. evening D. night
( )18. A. Hungry B. Tired C. Happy D. Excited
( )19. A. you B. he C. we D. they
( )20. A. because B. but C. so D. if
( )21. A. voice B. knock C. song D. noise
( )22. A. angrily B. sadly C. proudly D. nervously
( )23. A. At last B. First of all C. In fact D. Above all
( )24. A. park B. hospital C. home D. square
( )25. A. forgot B. offered C. began D. agreed
三. 阅读理解 (每小题2分，共40分)
阅读下列材料，完成每篇材料后的问题。
A
October is getting closer and it also means that the year of is coming to an end. “Hooray! It’s a holiday!” While you are thinking of putting textbooks aside and playing video games, let’s take a look at what children in other continents usually do during their holidays.
Children in America don’t have much homework to do. They keep themselves busy by playing camp games. A parent says, “My daughter Shirley usually attends different camps. We don’t ask her to spend plenty of time on maths problems or spelling tests.”
Children in Australia take partin activities on over twenty different th emes (主题). They learn painting, dancing, singing, history, culture and so on. Parents can accompany their kids to enjoy the learning process and to build a closer relationship with them.
These are what African kids do: build a boat, have a camel race, make a drum and make a rag (碎布) football. Don’t you think it is interesting that kids in other places have no idea how to make a drum, but kids in Africa do?
Plan your holiday well and try what you want to try. Make a good plan and you will have a lot of fun.
( )26. Where does Shirley come from?
A. Asia. B. America. C. Australia. D. Africa.
( )27. What does the underlined word “accompany” mean in Chinese?
A. 提醒 B. 监视 C. 陪伴 D. 排斥
( )28. According to the passage, only kids in Africa know how to ______.
A. play camp games B. do spelling testsC. build a boat D. make a drum
( )29. Which of the following is TRUE?
A. The passage was written before October.
B. Kids in America are good at maths.
C. Kids in Australia spend much time on homework.
D. Kids in Africa don’t play football.
( )30. What is the purpose of this pas sage?
A. To advise kids to make holiday plans.
B. To introduce some good holiday camps.
C. To encourage kids to make friends with parents.
D. To show the importance of doing homework during holidays.
B
“Whoosh!” The ball flew into the net and the game was finally over. This game had gone into overtime (加时赛) twice. Until the last goal was scored, no one had any idea which team would win.
Dave felt so bad because his team had lost. He liked playing soccer, but he liked winning even more. Now the two teams should have a picnic together. Dave did not want to eat lunch with the other team. The other team would probably brag (显摆) by talking about how they won the game.
Dave went to the locker room (更衣室) to change out of his soccer clothes. There the coach talked to the team about what they had done well. They also talked about how they could improve. Then everybody walked outside towards the picnic table.
One of the players from the other team was standing near the picnic table. He handed Dave a paper plate. “Hi, I’m Miguel,” he said.
“Hi,” Dave replied, looking down at the ground.
“You played great,” Miguel said. “I didn’t think we were going to win.”
Dave was surprised. Miguel was not bragging at all.
“Thanks,” Dave said to Miguel. “You played great, too.”
Dave felt happy. Dave promised himself that the next time his team won a game, he would not brag to the other team. It was wonderful to win, but it was even more important to be a good winner.
( )31.What happened first in the story?
A. Dave met Miguel. B. The boys ate lunch together.
C. Dave went to the locker room. D. The soccer game ended.
( )32.Which sentence best describes Dave?
A. He didn’t like to lose. B. He got angry a lot.
C. He got tired easily. D. He was not friendly to others.
( )33.What ha ppened in the locker room?
A. Dave and Miguel talked. B. Dave and his team ate lunch.
C. The coach talked to the team. D. Dave put on his soccer clothes.
( )34.What was Dave’s problem?
A. He was too tired to eat. B. He didn’t want to eat with the winning team.
C. He didn’t like Miguel. D. He didn’t play soccer as well as his teammates.
( )35. Based on the story, what would probably happen in the future?
A. Miguel would brag the next time his team won.
B. Dave would not brag the next time his team won.
C. Dave’s team would win the next soccer game.
D. Miguel’s team would not play against Dave’s team again.
C
Kitesurfing as a water sport began in the 1980s, but didn’t get popular until the end of last century. It is also known as kiteboarding, and in some European countries as flysurfing. Kitesurfing works through wind power (动力) by using a large kite to pull a rider on the water at high speed.
At first, kitesurfing was a difficult and dangerous sport. Now it is becoming easier and safer because of the safer kite design. For an able and strong person, kitesurfing can be a very fun, exciting sport, just like skating on the water with a feeling of flying. It has become more and more popular.
Compared with other water sports, kitesurfing is easier to learn. A beginner can understand how to operate the kite with 5-10 hours of training. And anybody aged from 13 to 65 can learn. It is not expensive to get the equipment (装备) for kitesurfing, which costs $1,000 to $2,500. Training lessons range from $200 to $500 for two or three hours. With the development of its equipment progress (进步), kitesurfing is becoming even safer. After some training, you can enjoy its excitement and challenging feeling.
With the rising popularity of kitesurfing, most major seaside cities have kitesurfing clubs. In China, Xiamen is the only place that has the kitesurfing club, which provides professional kitesurfing training and equipments.
( )36.Kitesurfing has a history of about years.
A. 30 B. 50 C. 100 D. 130
( )37. is mentioned in the passage as the power of kitesurfing.
A. Water B. Wind C. The sun D. The kite
( )38.The underlined word “range” in the third paragraph means “ ” in Chinese.
A. 在……范围内变动 B. 按……顺序排列
C. 向……方向延伸 D. 根据……归类
( )39.The most important reason for the popularity of kitesurfing is that .
A. its price is getting lower and lower
B. more and more people are enjoying its excitement
C. its equipment progress makes it easier and safer
D. all people can learn and take part in it
( )40.The main idea of this passage is about .
A. how to operate kitesurfing
B. the progress of kitesurfing equipment
C. the history of kitesurfing in China
D. the development of kitesurfing
D
During a winter storm in 1919, one dog managed to save the lives of the people on the ship Ethie. Today, people still tell the story of the dog.
In December 1919, Ethie was travelling along the coast of northern Canada. Without warning, the ship ran into a bad storm. Because of high winds and heavy snow, the captain could not tell where he was going. Sailing too close to the shore (岸), the ship could not move because of some rocks. Ethie was in danger.
The captain decided to save the people on his ship. He thought it was too dangerous to try to reach the shore by lifeboat, so he sent up flares (闪光信号) to call for help. People saw the flares and rushed to the beach. The crew (船员) tried to throw a rope (绳子) to them, but there seemed to be no way to get a rope to the shore.
In the early 1900s ships often carried a large kind of dog called a Newfoundland. Newfoundlands are excellent swimmers. During sea journeys, Newfoundlands would bring back things that had fallen off the ship or even save people from the sea.
The Newfoundland on Ethie was named Tang. The captain decided that Tang offered their best hope of survival (幸存). He gave the dog a long rope. Holding the rope between his teeth, Tang jumped into the turbulent water. He fought his way through high waves and strong winds. Finally he reached the beach.
The people on the shore took the rope. The rope became the ship’s lifeline.
Because of Tang, all the people on Ethie landed on the beach safely. He was given a special medal for being a hero. Tang wore the medal f or the rest of his life.
( )41.What happened to the ship Ethie at the beginning of the story?
A. It ran into a bad storm. B. It couldn’t reach the shore.
C. There was a hole in it. D. It was found at the bottom of the sea.
( )42.Ethie could not move near the shore because of .
A. the high waves B. the heavy snow
C. some rocks in the sea D. the st rong winds
( )43. Which order is RIGHT according to the story?
① The dog reached the beach.
② The captain gave Tang a rope.
③ Tang was given a special medal.
④ The captain sent up flares.
A. ①③②④ B. ④②①③
C. ①②④③ D. ②④①③
( )44.The word “turbulent” means .
A. rough B. smooth C. safe D. amazing
( )45. Which of the following can be the best title of the passage?
A. A storm in 1919 B. The rope to save people
C. A medal for a dog D. The hero on the ship
四. 补全对话(每小题1分，共5分)
在每小题的空白处选择适当的话语使对话意思完整。
A：Hello, Xiao Hong!
B：Hello!
A: Y ou look a little upset.___________46__________
B: Yes. It’s just my mom. She always nags (唠叨)me.
A：Really? What does your mother nag you about?
B: __47__“Get up now…Everything must be in place…Don’t forget your piano lesson…”
A: Well, all the mothers like saying these words to their children.
B: Also, I’m fond of pop music.___48_ We don’t have the same interest in many things.
A：___49__But I should say she nags you because she cares about you. You’re lucky to have such a good mother.
B: I agree with you. ____50____ .
A: Th at’s right. Understanding is important. If your mom knows that everything is fine, she will never nag.
五. 完成句子 (每小题2分，共10分)
根据中文意思完成句子。
51. 爸爸去上海出差了。
My father has gone to Shanghai ______ _______.
52. 孩子们在假期里玩得非常高兴。
The children _____ great ______ during the vacation.
53. 现在许多人死于吸烟。
Many people ______ _______ smoking now.
54. 作为青少年，我们应该自己洗衣服。
As teenagers , we should wash clothes ______ our _______.
55. 你必须先穿过一条巨大的玻璃金字塔才能到达那幢大楼。
You must ______ _______ a giant glass pyramid first, then you will get to the building.
六、综合填空(本题共10小题;每小题1分，满分10分)
请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。
Kitty was a student in a small town. It was going to be her mother’s birthday. She wanted to buy her a present that would be nice and useful but not e 56 .
She went s 57 after a quick and simple lunch. After she looked for about forty minutes, she found a shop that was selling cheap umbrellas, and she d 58 to take a black one. She thought, “Mom can carry it when she is wearing clothes of any
c 59 .” So she bought a lovely black umbrella and took it to school with her until her classes finished.
On her way home on the train she felt h 60 , so she went to the buffet car (餐车). She left the umbrella on her seat and left. But when she remembered it and r 61 for it, it was gone. Kitty began to cry. The other passengers felt very sorry for her and asked what was the matter. She told them the black umbrella she bought for her mother was gone, and she had to get off at the next station. After the three passengers h 62 this, they asked her for her mother’s a 63 so that they could send the umbrella to her if someone took it by mistake (弄错) and brought it b 64 .
And now a week passed. Kitty got a letter from her mother. It said, “Thank you very much for your lovely g 65 , but why do you send me three black umbrellas?”
七. 书面表达(满分10分)
假如你是刘红的老师，刘红今天因 病没来上学。请你根据提示和要求给刘红发一封e-mail, 以示关心。
提示：1 不要着急，遵照医嘱休息、吃药
2 以后多锻炼、必须吃早餐、少吃零食、饮食平衡(have a balanced diet)才会健康
要求：
① 80词左右(开头已给出，不计入总词数);
② 文中需包括所有写作要点，但不要逐字翻译，可适当加入过渡词句，使短文通顺、连贯。
Dear Liuhong,
6.九年级下册化学练习册答案 篇六
热点梳理
1、物理性质;固体;金属光泽;延展;
导电;导热
2、大;低
达标训练
1、2、3、4、5、
BBACB
6、A;不锈钢
7、C;用金属铝制锅具、饭锅或电热壶
8、(1)锌
(2)铜
(3)铁
(4)铝
(5)钛
(6)钙
9、(1)金属材料
(2)A
能力拓展
10、(1)A;Fe-AI合金
(2)铜片上留下明显的划痕;合金的硬度比组合金的纯金属硬度大
八单元课题2金属的化学性质课时答案
热点梳理
1、镁;与氧气反应生成一层致密的
氧化铝薄膜阻止被氧化
2、镁>锌>铁>铜
3、单质;化合物;单质;化合物
达标训练
1、2、3、4、5、
CDBAD
6、B;稀硫酸或稀盐酸
7、A;M产生的氢气比N多
8、(1)稳定
(2)2Mg+O?点燃2MgO
(3)锌;反应速度率适中
9、镁;①镁与盐酸反应的速率比铁快;②镁的相对原子质量比铁小，质量相同镁产生的氢气多
探究乐园
7.九年级化学与其它学科关系初探 篇七
九间渗透, 培养学生综合能力作一些探讨。
年一、化学与语文的综合、交叉
级1、成语、诗歌中的化学例: (海南06年中招第1题)
下列诗句描述的变化属于化学变
化化的是 ()
学A、千里冰封、万里雪飘B、野火烧不尽, 春风吹又生C、只要功夫深, 铁杵磨成针○三亚与港例市D、:明代民族英夜来风雨声, 花落知多少雄于谦的《石其局烧若等务灰吟》:闲“千, 锤万凿出深山粉身碎骨浑不怕, 烈, 要留火焚它中清白在人间学四种物质依次。”是 () 这四句诗所描写的学A梁碳酸钙、生石灰、熟石灰、石灰石、科定B铭石灰石、碳酸钙、生石灰、熟石灰、关C碳酸钙、石灰石、生石灰、熟石灰、系D生石灰、石灰石、碳酸钙、熟石灰、初2们能够、通“过语言文字理解语文是百科之母”和。掌握我探实其他、规律学科, 并且能够运用所表达的定理、公式语言文、字事
将自己理解掌握的这些知识和思想表述出来。学习、掌握、表达的过程都离不开语文, 而通过语文
(有时加上必要的操作) 就能理解和表达这些知识。
二、化学与数学的综合、交叉
1. 根据化学式、化学方程式的计算、溶液的计算及综合计算, 是初中的三大计算;
2.用几何图形表示化学概念、物质之间的关系;3.用数轴表示相关化学知识;4.用函数图像表示物质溶解度、金属与酸反应、溶液p H的变化等。
三、化学与英语的联系
化学虽然是理科, 但有着很大的文科特点, 内容多、知识碎, 大多是实验结论, 有不少知识只能知其然, 而无法探究其所以然, 只能记住。甚至不少老师都赞同化学与英语的相似性, 说“化学就是第二外语”, 化学的化学式就相当于英语单词, 化学方程式就是英语的句子, 而每一道化学计算题, 就是英语的一道阅读理解题。事实确实是这样, 化学成绩优秀者, 必定是准确记住了学过的每一种物质典型的物理、化学性质并能顺利写出相应的化学方程式, 理解并记住了几个常用的解题方法和基本的实验操作。且元素符号的书写也和英语字母书写密切相关, 字母的大小写和书写格式也会决定化学式和化学方程式的对错。
四、化学与生物
化学与生物的联系应该是化学与各学科联系中最紧密的。
1. 将植物的光合作用、动物的呼吸作用、胃液的
酸性、血红蛋白的生理功能、一氧化碳的中毒机理、土壤的酸碱性等与化学知识联系在一起。
2. 酶是一类重要的蛋白质, 是生物催化剂, 能催化生物体内的反应。
一种酶只能催化一种反应, 而且是在体温和接近中性的条件下进行的。
3. 活性炭或木炭有吸附性, 是因为植物体内有
导管和筛管, 当制成木炭时这些管道保留下来形成疏松多孔的结构。
4. 化学元素与人体健康的关系, 如:体液酸碱性、人体中的营养元素和微量元素等。
五、化学与物理的综合、交叉
1. 化学中研究物质的性质时物理性质与物理知识的结合。
如质量、温度、密度、比热、导热、导电性、溶解性等, 将酸碱盐的知识与物理的电学知识相结合;2.气体的性质与物理中气体压强、浮力等知识的综合;3.化学热效应、分子运动论与原子结构等知识与物质内能等知识综合;4.化学燃料与物理中新能源的开发与利用的综合;5.金属与溶液的反应与溶液密度、浮力的变化的综合应用;6.常常将物理学中的杠杆原理、能量转化、天平问题等知识渗透到化学知识中, 以培养学生的多种能力。
六、化学与政治、历史、地理的联系
环境问题与政府行为有很大关系, 是彻底解决环境污染的最重要的一环。
8.九年级化学试题答案 篇八
专题一
1~5 CADAA6~10 CABBD11~15 ADBDA
专题二
1~5 BCBCA6~10 BCBAA 11~15 AACAD
专题三
1~5 ACBCB6~10 CCCCC11~15 CCCAB
专题四
1~5 CABDA6~10 BBCCA 11~15 ABBBB
专题五
1~5 DBDBB6~10 DCAAD11~15 CCADB
专题六
1~5 CDDCA 6~10 DCCBD11~15 BBCAB
专题七
1~5 DABBC6~10 DBBBB 11~15 DCAAB
专题八
1~5 CBDDB 6~10 BBBDA11~15 CCBDB
专题九
1~5 CCBDD 6~10 DCDCA11~15 CDADB
专题十
1~5 DDCBA 6~10 BBBAA11~15 BCACC
专题十一
1~5 DBAAA6~10 CABCD 11~15 ADDDB
专题十二
1~5 CCCBB 6~10 DBCCD 11~15 AABAD
专题十三
1~5 ACBBD6~10 CDCAB11~15 CDCAC
专题十四
1~5 BDDAD6~10 CCACA 11~15 BBCCC
专题十五
1~5 ABBAC6~10 ABDAD 11~15 CCABD
【新目标英语7~9年级动词搭配专项练习大全参考答案】
练习1 1) add up to 2) added to3) adds to 4) added; up
练习2 1) away from2) down3) in4) off5) up6) up
练习3 1) down2) in3) back4) about5) up6) up 7)down8) out
练习4 1) up 2) for3) at4) out5) off
练习5 1) for2) about3) back4) on5) at 6) down7) into8) out9) to10) up
练习6 1) down2) down3) across4)up5)off6) in
练习7 1) over their feet2) behind3) back4) over
练习8 1) up2) up 3) by4) down5) against 6) beyond7) through8) off9) over10) with 11) ahead12) in for
练习9 1) down2) over3) round4) through 5) down6) in7) over
练习10 1) away2) off3) out4) up5) out 6) away7) out
练习11 1) back2) down3) on4) out 5) up6) down7) up
练习12 1) away2) back3) from4) from5) away 6) on7) up8) off9) to10) up
练习131) down 2) off 3) on4) into
练习141) out2) to3) behind4) over5) over 6) over
练习151) through2) out3) on4) back5) down 6) into7) about / around / round
练习161) into2) for3) out4) up / up5) up6) out
练习171) down / on2) away3) through4) over
练习181) for2) back3) back4) for5) off
练习191) up2) up3) up4) out5) out6) up 7) up
练习201) away2) down3) forward4) out5) through6) up7) on8) up9) up
练习211) out2) down3) over4) through5) up
练习221) on / ahead / forward2) over3) through 4) over5) through
练习231) into2) across / into3) out4) after5) for6) into
练习24 1) back2) about3) off / out4) out5) out 6) up7) off
练习251) back2) down3) for4) in5) over6) up7) on
练习26 1) to2) round3) over4) out5) away6) away7) down8) upside down9) up 10) against11) out
【2009年中考英语总复习模拟试题（三）参考答案】
听力材料:
第一节（共6小题；每小题1分，满分6分）
听下面6个问题，每个问题后有三个答语，从题中所给的A,B,C三个选项中选出最佳选项。听完每个问题后，你都有5秒钟的时间来作答和阅读下一小题。每个问题仅读一遍。
1. How are you?
2. What does she do?
3. Could you lend me a hand?
4. Where will the meeting be held?
5. How did you come to school this morning?
6. What day is it today?
第二节（共6小题；每小题1分，满分6分）
听下面6段对话。每段对话后有一个小题，从题中所给的A,B,C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
7. M: Whats the trouble with you?
W: Yesterday I cut an orange with a knife and carelessly cut my finger.
8. W: When did you buy the new car, Tom?
M: I didnt buy it. I borrow it from a friend.
9. W: Is the Hubei Museum far away from here?
M: No, it takes only 10 minutes by bike.
10. W: Its your turn, sir.
M: Would you please mend this pair of trousers for me?
11. M: Hey, Lily, what are you doing here? Our boss is looking for you.
W: Oh, Im just making a phone call.
12. W: May I help you, sir?
M: Yes, Id like to have a look at your cabbage.
第三节（共13小题；每小题1分，满分13分）
听下面4段对话或独白。每段对话或独白后有几个小题，从题中所给的A,B,C三个选项中选出最佳选项。听每段对话和独白前，你将有时间阅读各个小题，每小题5秒钟，听完后，各小题将给出5秒钟的作答时间，每段对话或独白读两遍。
听第13段材料，回答第13至15题。
M: Miss, you look lost. Can I help you?
W: Yes, please. Is there a bookstore near here?
M: Yes. Its about 2 kilometers away from here.
W: Two kilometers?
M: Yes. Go straight along this street, and then turn left. Its just on your right.
W: How long will it take me to get there?
M: Its about a fifteen-minute drive.
W: Thank you
听第14段材料，回答第16至18题。
M: Did you use to collect stamps, Lucy?
W: Yes, I did. But now I am more interested in listening to music and playing the violin. When Im free, I enjoy playing.
M: Youve changed a lot.
W: Thats right. What about you, Jack?
M: Now, I enjoy fishing.
W: Fishing? Thats a good hobby.
M: Yeah, you are right. Its a lot of fun.
W: What did you use to do?
M: I used to take pictures.
W: I think taking pictures is expensive. You have to get a good camera and buy films. Am I right?
M: You are right. So I gave it up.
听第15段材料，回答第19至22题。
M: Hi, Jane. Welcome back. How was your vacation?
W: Great! I had a wonderful time.
M: What did you think of Singapore?
W: I like it better than I had expected. Its very clean and has got lots of flowers. Henry, do you work?
M: Not regularly. I used to have a job in a publishing company, but now I do the things I want to do.Some of them pay, like lecturing and teaching,while others dont.
W: How do you find your present way of life?
M: Well, therere some good things about it. For one thing if you feel tired, you dont have to get up early, and for another you can spend your time doing things you really want to do.
听第16段材料，回答第23至25题。
A writer, a singer and a painter were lost in the forest. It was getting dark when they came to a farmers house. They said to the farmer, “Could you let us stay for a night?”
“Yes, of course,” the farmer said, “But Ive got room for only two of you in the house. The other one will have to sleep in the barn with the animals, and the smell is very bad there.”“I will sleep in the barn,” the singer said. Half an hour later, a knock was heard on the door. And there stood the singer, saying, “The smell is terrible, and I cant sleep there any longer.” The writer said, “All right. Ill sleep in the barn.” And he went away. After some time there was another knock on the door. “I feel terrible from the smell,” the writer said in an angry way. The painter said, “OK, Ill sleep in the barn”
Early next morning when they got up and opened the door. There stood all the animals from the barn. The animals had stood there for a whole night!
1~5 ABCAA6~10 BCBCB11~15 BAAAB
16~20 CBBAA21~25 ABABA26~30 BCADD
31~35 BCADC36~40 BACDA41~45 CABCC
46~50 ABDCA51~55 BDACB56~60 DACAD
61~65 BCADB 66~70 BCCBA 71~75 DCDAD
76~80 CBADC
81. November 82. troubles 83. stand 84. rest
85. move 86. hung87. news 88. anything
89. agreed 90. coming
One possible version: