大学英语模拟试卷二

大学英语模拟试卷二（共8篇）

1.大学英语模拟试卷二 篇一

12月大学英语六级考试老题型模拟试卷（二）

Part ⅡReading Comprehension(35 minutes)

Directions: There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.

Passage One

Questions 21 to 25 are based on the following passage.

Perhaps all criminals should be required to carry cards which read : “Fragile : handle with care.” It will never do, theses days, to go around referring  to criminal as violent thugs.You must refer to them politely as “social misfits” ( 不能适应社会的人).The professional killer who wouldn’t think twice about using his club or knife to batter some harmless old lady to death in order to rob her of her meager life savings must never be given a dose of his own medicine. He is in need of “hospital treatment”. According to his misguided defenders, society is to blame.A wicked society breeds evil or so the argument goes. When you listen to this kind of talk, it makes you wonder why we aren’t all criminals. We have done away with the absurdly harsh laws of the nineteenth century and this is only right. But surely enough is enough. The most senseless piece of criminal legislation in Britain and a number of other countries has been the suspension of capital punishment.

The violent criminal has become a kind of hero-figure in our time. He is glorified on the screen ; he is pursued by the press and paid vast sum of money for his “memories”. Newspapers which specialize in crime reporting enjoy enormous circulations and the publishers of trashy cops and robbers stories or “murder mysteries” have never had it so good. When you read about the achievements of the great train robbers, it makes you wonder whether you a

2.大学英语模拟试卷二 篇二

第一部分: 听力( 略)

第二部分: 阅读理解( 共两节,满分40分)

第一节( 共15小题; 每小题2分,满分30分)

阅读下列短文,从每题所给的四个选项 ( A、B、C和D) 中,选出最佳选项,并在答题卡上将该项涂黑。

A

Investing In the Graphite ( 化石墨) Revolution

December 21st,2014

Graphene( 石墨烯) is the future. Plain and simple.

It's 200 times stronger than steel, thinner than a sheet of paper,and more conductive than copper.

And that's not all

Researchers all over the world are using it for critical advances in a variety of industries. Graphene makes:

Solar cells — 50x ~ 100x more efficient

Semiconductors — 50x ~ 100x faster

Aircraft — 70% lighter

We're talking about batteries that charge 10x faster and store 10x more power

Phones and computer displays that bend and fold

It's so vital to our future that it's been named a “supply critical mineral”and a “strategic min毄eral”by the United States,Japan and the European Union.

Yet only a few companies around the world have access to mineral resource that is required to make graphene. And 70% of supply is controlled by China.

So the setup is perfect for any non-Chinese supply to become an extremely profitable investment,just like rare earths a few years ago.

A new report from the Outsider Club fully outlines the situation:

What graphene is used for

And why now is the perfect time to invest in this world-changing discovery.

To get this new report, simply drop your name in the box below. And in a few moments, you'll be fully informed on the ins and outs of graphene. All I ask in return is for you to sign up to receive our financial and economic news e-letter, Outsider Club.

In each issue,we'll bring you the financial news from the “Outsider's ” perspective. It will show you how to plan your own finances,and manage your own investments. Become a reader of Outsider Club today.

So what are you waiting for?

21. What do you know about graphene?

A. It can conduct electricity very well.

B. It is much stronger than paper.

C. It is much heavier than steel.

D. It is very easy to obtain now.

22. According to the passage,a plane made of graphene can____.

A. move much faster

B. work more efficiently

C. save more energy

D. weigh much less

23. We can infer that a few years ago rare earths were___-.

A. cheap

B. common

C. profitable

D. worthless

B

Christian Haettich has one arm and one leg. Over 22 days this summer at the 2014 Haute Route he cycled across the Dolomites,the Alps and the Pyrenees to become one of only a dozen finishers of a tough three-week cycling event.

Haettich was born and brought up in rural Alsace,in north-east France. He led a normal life until a traffic accident in December 1976 when he was 15 years old. He was out riding a bike when he was hit by a car. As a result,he lost his left leg and his left arm.

“Many things changed for me. I had to learn how to live again and deal with being stared at. It's tough being disabled at this age,and I was often rejected,”he says.

Although he had long been a fan of professional cycling,it wasn't until his mid-30s that he thought of taking up the sport himself. A chance sighting of a man with one leg riding up a mountain encouraged him to try cycling himself.

People use arms and legs instinctively as counterbalances and supports to keep them upright. “I had no balance and fell off many times at first. My wife helped me a lot until the day I managed to ride without falling off,”he says.

Haettich particularly likes those that involve riding in the mountains. On a long mountain pass,you can't stop pedalling( 蹬车) to relax. For an able-bodied rider the work is shared more or less equally between both legs. For Haettich,his one leg has to do the work of two. He remembers how painful it was in the early days. “Pedalling uphill with one leg is hard,it's just push and pull,if I forget one,I fall. But in the end ,my struggle paid off . ”

For many riders,cycling is no more than a hobby. For Haettich it's much more. “Cycling brings me happiness. Cycling takes away my disability,and it helps me move forward. The bike is a source of inspiration,”he said.

24. How many cyclists finished the threeweek cycling event at the 2014 Haute Route?

A. 6 cyclists.

B. 12 cyclists.

C. 20 cyclists.

D. 24 cyclists.

25. What do you learn about Christian Haettich after he was disabled?

A. He led a very normal life.

B. He was discriminated against.

C. He was taken good care of.

D. He was inspired by his peers.

26. What inspired him to take up cycling?

A. Seeing a disabled man riding up a mountain.

B. Watching a cycling event at the 2010 Haute Route.

C. Hearing of a touching story about his sport hero.

D. Making friends with a world-famous cyclist.

27. At the beginning it was very difficult for Christian Haettich to____.

A. climb the mountains

B. keep his pace

C. keep his balance

D. control his fear

C

Evidence has long suggested that certain animals can possess unusual abilities. Now science is proving many of these stories to be correct. Close observation of such animals could help people to plan well in advance of coming problems.

Henry Streby of the University of California discovered that golden-winged warblers take off from their expected locations more than 24 hours before storms hit. In this case,the storm in question produced tornadoes that killed at least 35 people. “The most curious finding is that the warblers flew away long before the storm arrived,”said Streby. “At the same time the weatherman was telling us this storm headed in our direction. The birds were apparently already packing their bags and evacuating ( 撤离 ) the area. ”

Dogs can sniff out prostate cancer with 98 percent accuracy, found a study earlier this year.

Dogs have about 200 millionolfactorycells in their noses,versus only 5 million in the human nose. Their keen sense of smell helps to explain the cancer-detecting feat. Yet another study on dogs found that they can smell—through a person's breath or sweat — whether or not a diabetic ( 糖尿病 )person has high or low blood sugar.

After the 2011 magnitude 9 earthquake in Japan,Hiroyuki Yamauchi of National Tsing Hua University conducted a survey on how cats reacted ahead of the quake. The survey found that six or more days before the devastating earthquake, some cats engaged in unusual behaviors and became more stressed out. Felines began “trembling, being restless and escaping ”. The researchers believe that cats may sense quakes ahead of time because they have a wider range of hearing than humans.

Have you ever noticed that bees are nowhere in sight before it rains? They sense moisture changes in the atmosphere,causing them to take shelter in their hives before downpours begin.

28. We can infer that the golden-winged warbler is a kind of____.

A. mammal

B. bird

C. sea creature

D. reptile

29. The underlined word “olfactory ”means____ .

A. related to smell

B. linked to hearing

C. connected with sight

D. associated with taste

30. Just before the rain, bees tend to be.

A. busy

B. restless

D. noisy

D. invisible

31. Which of the following is the best title?

A. Some animals preventing major natural disasters.

B. Some animals predicting devastating natural disasters.

C. Some animals predicting disasters and detecting disease.

D. Some animals helping people to detect human disease.

D

Denmark is a small nation of about 5. 5 million people. The United States is a melting pot of more than 315 million people. There is no doubt that Denmark and the United States are very different countries. Nonetheless,are there lessons that we can learn from Denmark?

Today in the United States there is a massive amount of economic anxiety. Unemployment is too high and wages and income are too low. The gap between the very rich and everyone else is growing wider. However, in Denmark, social policies ensure that almost no one falls into economic despair. While it is difficult to become very rich in Denmark,no one is allowed to be poor.

While millions of Americans are struggling to find affordable health care,health care in Denmark is universal and free of charge. Everybody is covered. The Danish health care system is popular,with patient satisfaction much higher than in our country.

Danes understand that the first few years of a person's life are the most important in terms of intellectual and emotional development. In order to give strong support to expecting parents,mothers get four weeks of paid leave before giving birth. They get another 14 weeks of paid leave afterward. In the U. S. A,working mothers enjoy no paid leave before and after giving birth and young working families search desperately for affordable child care.

At a time when college education in the United States is increasingly unaffordable and the average college graduate leaves school more than $ 25,000 in debt,virtually all higher education in Denmark is free.

In Denmark, adequate leisure and family time are considered an important part of having a good life. Every worker in Denmark is entitled to five weeks of paid vacation plus 11 paid holidays. And the United States is the only major country that does not guarantee its workers paid vacation time.

Recently the Organization for Economic Cooperation and Development ( OECD ) has found that the Danish people rank among the happiest in the world among some 40 countries. However, America did not crack the top 10.

The United States,in size,culture,and the diversity of our population, is a very different country from Denmark. Can we,however,learn some important lessons from them? You bet we can.

32. Which of the following is the best title of the passage?

A. How can the United States catch up with Denmark?

B. What lessons can the United States learn from Denmark?

C. Where does the United States differ from Denmark?

D. How did the United States become a melting pot?

33. Which of the following is NOT true of the United States ?

A. Free health care.

B. High unemployment.

C. Low wages and income.

D. Lower patient satisfaction.

34. Before and after giving birth,a mother in Denmark can get___.

A. 10 weeks of unpaid leave.

B. 10 weeks of paid leave.

C. 18 weeks of unpaid leave.

D. 18 weeks of paid leave.

35. From the passage,we can infer that___-.

A. The gap between the rich and the poor is growing wider in Denmark

B. There are many very wealthy people living in Denmark

C. Danes spend much time in staying with their family members

D. college education in Denmark is becoming more expensive

第二节 ( 共5小题; 每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

While high school dropout percentages in the U. S. are much lower today than they were a few decades ago,there is still a lot of room for improvement.

One factor when it comes to the dropout rate is the economic background. It is reported that students from low-income families are 2. 4 times more likely to drop out than middle-income kids. 36Students with physical disabilities drop out at a rate of36percent. Some behaviors that are often characteristic in dropouts include being retained( 留级) from advancing a grade level with peers,relocating during the high school years and being bullied by peers at the school.

The U. S. Census Bureau estimates that dropouts bring in just $ 20,241 annually,which is over $ 36,000 less than a person holding a bachelor's degree.37And the unemployment rate for dropouts is generally 4 percentage points higher than the national average.38.

Dropping out of high school hurts more than the individual.39It's estimated that half of all Americans on public assistance are dropouts. A study has found that high school dropouts cost taxpayers $ 292,000 over the course of their lives. It's not just about the money though.40As a society,we are not just paying into public assistance programs for dropouts,but we are paying to protect ourselves against them.

If we invested that money,or even half of it, into efforts to enhance the learning experience and programs to prevent dropping out,it would benefit the individual and the society as a whole.

A. In the end,the lifetime earnings of high school dropouts are $ 260,000 less than peers who earn a diploma

B. Over 80 percent of the prisoners are high school dropout.

C. Household income is not the only factor that affects dropouts,though.

D. This has become an issue that truly impacts every member of the community.

E. It also has a bad effect on the society.

F. We still have a long way to go.

G. The poverty rate for dropouts is over twice as high as college graduates.

第三部分: 英语知识运用( 共两节,满分45分)

第一节完形填空( 共20小题; 每小题1. 5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项( A、B、C和D) 中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

Cancer treatments left 5-year-old Isabella Harvey nearly bald. She felt41for not feeling as “beautiful”as her favorite Disney princesses, but a magical photo shoot lifted her42and moved many of her supporters to tears.

Battling cancer for a long time,5-year-old Isabella Harvey felt sad that her43loss no longer made her feel like her favorite Disney princesses.

D'Antoni,44is a member of Gianna Nicole's Heart of Hope,a foundation that45cancer patients and their families,had known the Harvey family for years. She46to organize a photo shoot activity in a ( n)47to cheer up Isabella. The photo shoot was held at Oakeside Bloomfield Cultural Center in Bloomfield, New Jersey. Dressed48a princess gown ( 女裙服) ,Isabella remained49about her bald head,and didn't want to take off her hat. But all that changed when a famous performer Chelsea Knutson50as Cinderella,a Disney princess, in a princess gown with a51head.

Isabella was excited to see Knutson in character. She took her hat off52and said, “Wow she looks just like me! ”And in a split moment she53from an insecure and shy little girl into a54and brave princess!

“I didn't tell her55that Cinderella was going to be bald,” Pina Harvey, her mother, said. “I wanted to surprise her. When Knutson came down the stairs as Cinderella, her face56. She looked very cheerful. ”

D'Antoni was57touched. “When Isabella saw that Cinderella had no hair,she had a smile from ear to ear. She knew that she wasn't58,”she said.

Isabella continues to fight cancer,enduring multiple59to the hospital every week. She hopes her fight can help60other kids to be brave and feel beautiful,too.

41. A. delightedB. discouraged

C. annoyed D. touched

42. A. spirits B. manners

C. levelsD. standards

43. A. moneyB. weight

C. leg D. hair

44. A. that B. which

C. whomD. who

45. A. cures B. supports

C. receives D. finds

46. A. decidedB. pretended

C. agreed D. refused

47. A. attempt B. request

C. wayD. effort

48. A. atB. in

C. onD. over

49. A. confusedB. excited

C. embarrassedD. convinced

50. A. functionedB. worked

C. servedD. emerged

51. A. baldB. round

C. hairyD. clever

52. A. strangelyB. immediately

C. personally D. absolutely

53. A. transformed B. translated

C. transportedD. transplanted

54. A. prettyB. serious

C. anxious D. confident

55. A. in addition B. in advance

C. in secret D. in place

56. A. broke up B. turned up

C. lit up D. went up

57. A. equally B. slowly

C. specially D. lately

58. A. afraid B. asleep

C. alone D. awake

59. A. solutions B. keys

C. voyages D. trips

60. A. inspire B. remind

C. warnD. expect

第Ⅱ卷

第三部分: 英语知识运用( 共两节,满分45分)

第二节 ( 共10小题; 每小题1. 5分,满分15分)

阅读下面材料,在空白处填入适当的内容( 1个单词) 或括号内单词的正确形式。

On May 8,1996,I was born in Incheon City,South Korea. My mother gave me up that same day. A foster family61( take) care of me while a family in the United States received a phone call62there was a baby girl for63( adopt ) . Six months later,that family picked me up from the airport in New York and became my family. That day I gained a mom, dad,64( old) brother and sister.

Recently I65( turn) 18 years old. I did not66( previous) know much about my birth parents. But now because I am67adult,my mom encouraged me68( find ) my birth mother. Finally,I got in touch with her. My birth mother said sorry to me,69( say ) that she was young and unmarried then and gave me up so that I could have a better future. I used to hate her,but now I understand and forgive her.

Now I am not ashamed of my adoption. Instead,I feel happy70I have two more parents to love me.

第四部分: 写作( 共两节,满分35分)

第一节短文改错( 共10小题; 每小题1分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加: 在缺词处加一个漏字符号( Λ) ,并在其下面写出该加的词。

删除: 把多余的词用斜线( ) 划掉。

修改: 在错的词下画一横线,并在该词下面写出修改后的词。

注意:

1. 每处错误及其修改均仅限一词;

2. 只允许修改10处,多者( 从第11处起) 不计分。

Like most dads,Mike Wilson will do anything for his kid — and he recent proved it when he slipped into Spider-Man suit to surprise his kid for his son's fifth birthday.

Wilson's son, Jayden, is diagnosed with brain cancer shortly after his fourth birthday. Because Wilson and his wife feared that their son will not live to see his fifth birthday,so they decided to celebrate his birthday ahead off time. Wilson also wanted to make this birthdays one to remember by dress up as Jayden's favorite superhero.

When Jayden stepped outside to see Spider Man to leap off the roof,he was very surprised and excited. The boy said that she was having a good birthday.

第二节书面表达( 满分25分)

假如你班准备召开班会,征集暑假社会实践活动的创意。请你写一篇口头发言稿,介绍你的活动创意。

内容包括:

1. 活动内容;

2. 活动的目的和好处。

注意:

1. 词数: 100左右;

2. 可以适当增加细节,以使行文连贯。

2015年高考英语模拟试题( 二)

第一部分: 听力( 略)

第二部分: 阅读理解

第一节

A

【语篇导读】本文为应用文。是一则电子财经新闻订阅广告。

21. A。 细节理解题。 根据“and more conductive than copper”可知,石墨烯导电性能优于铜,故A项正确。

22. D。 细节理解 题。 根据“Aircraft — 70% lighter”可知,用石墨烯制造的飞机重量很轻。

23. C。推理判断题。根据“So the setup is perfect for any non-Chinese supply to become an extremely profitable investment, just like rare earths a few years ago. ”可以判断出,稀土几年前十分赚钱。

B

【语篇导读】本文为记叙文。法国人Christian Haettich少年时因车祸失去了左臂和左腿。 但他还是选择了山地自行车运动。并取得了不俗的成绩。在2014 Haute Route自行车比赛中,他是少数几个骑完全程的自行车选手之一。

24. B。细节理解题。根据第一段第二句中的“he cycled across the Dolomites,the Alps and the Pyrenees to become one of only a dozen finishers of a tough three-week cycling event. ”可知,只有12个人骑完全程。

25. B。细节理解题。根据第三段第二、三句“I had to learn how to live again and deal with being stared at. It's tough being disabled at this age,and I was often rejected. ”可知,残疾后他遭到歧视和白眼。

26. A。细节理解题。根据第四段第二句 “A chance sighting of a man with one leg riding up a mountain encouraged him to try cycling himself. ”可知,一次偶然的机会他看见一个单腿男子骑车上山,这件事情激发了他从事自行车运动的欲望。

27. C。细节理解题。根据第五段第二句 “I had no balance and fell off many times at first. ”可知,开始学骑自行车时Christian Haettich很难保持身体的平衡。

C

【语篇导读】本文为说明文。主要介绍了一些能预测自然灾难和探测疾病的动物

28. B。推理判断题。根据第二段第三句 “The most curious finding is that the warblers flew away long before the storm arrived. ”可以判断出,warbler是一种能飞的鸟。

29. A。 词义推测题。 根据第四 段中的 “Their keen sense of smell helps to explain the cancer-detecting feat. ”可知,olfactory是与嗅觉相关的意思。

30. D。细节理解题。根据最后一段中的第一句“Have you ever noticed that bees are nowhere in sight before it rains. ”可知,下雨前人们看不到蜜蜂。

31. C。主旨大意题。本文主要介绍了一些能预测自然灾难和探测疾病的动物,故C项最佳。A项不符合事实; B项和D项不全面,不具有概括性。

D

【语篇导读】本文为议论文。作者通过把美国和丹麦比较得出结论: 丹麦有很多值得美国学习的地方。

32. B。 主旨大意 题。 根据第一 段中的“Nonetheless,are there lessons that we can learn from Denmark?”可知,本文主要讲美国从丹麦的经验中得到什么启示,故B项最佳。

33. A。细节理解题。根据第二段第二句 “Unemployment is too high and wages and income are too low. ”可知,美国的失业率高、收入低; 根据第三段最后一句“The Danish health care system is popular, with patient satisfaction much higher than in our country. ”可知,美国病人的满意率不高。故B、C及D项陈述的内容正确,不能选。根据第三段第一句“While millions of Americans are struggling to find affordable health care”可知,美国的医疗保健并不是免费的, 故答案为A。

34. D。细节理解题。根据第四段第二、三句中的“mothers get four weeks of paid leave before giving birth. They get another 14 weeks of paid leave afterward. ”可知,在生孩子前后,母亲总共可享受18个星期的带薪休假。

35. C。推理判断题。根据第六段第一句“In Denmark,adequate leisure and family time are considered an important part of having a good life. ”可知,丹麦人很重视家庭生活,故C项正确。

第二节

【语篇导读】本文为说明文。短文分析了美国高中生辍学的原因以及辍学所造成的后果,同时作者呼吁政府应加大投入减少辍学现象发生。

36. C。本段分析高中生辍学的原因,此句起承上启下的作用。

37. G。前一句讲到辍学者收入远少于大学毕业生,故他们比大学毕业生贫穷。

38. A。本段涉及辍学者的收入情况,本句是对前面情况的总结。

39. E。本段主要讲高中辍学者对社会的影响。

40. B。 辍学者犯罪率高属于对社会的影响。

第三部分: 英语知识运用

第一节完形填空

【语篇导读】本文为记叙文。一位5岁女孩因治疗癌症头发全部掉光,她为此感到沮丧。 好心人决定专门为她举办一次带妆摄影活动, 帮助她走出心理阴影。当女孩最喜欢的迪斯尼公主以光头形象出现的时候,她又重新拾起了生活的信心。

41. B。后文5-year-old Isabella Harvey felt sad有提示。Isabella Harvey因为治疗癌症没有了头发,觉得自己没有她喜欢的迪士尼公主那么漂亮,因此她感到有点沮丧。

42. A。这次摄影活动提振了她的精神。

43. D。短文第一句“Cancer treatments left 5-year-old Isabella Harvey nearly bald. ”有提示。 故她因化疗失去了头发。

44. D。who引导一个非限制性定语从句。

45. B。support在此是“支持,帮助”之意, 符合句意。

46. A。他决定组织一次摄影活动。

47. D。in an effort to do sth. 意为“努力, 企图”,符合句意。

48. B。介词in在此表示“穿着”。

49. C。后文“she transformed from an insecure and shy little girl”有提示。可见当初的时候Isabella Harvey为自己没有头发感到难为情。

50. D。emerge在此是“出现”之意,符合句意。

51. A。后文“Wow she looks just like me. ” 有提示。可见Chelsea Knutson是以光头的形象出现的。

52. B。 Isabella Harvey马上把帽子脱了下来。

53. A。transform意为“转变”,符合句意。

54. D。她马上从一个没有安全感的、害羞的小女孩变成了一个自信的、勇敢的小公主。

55. B。in advance是“提前,事先”之意, 符合句意。

56. C。light up在此意为“变得喜悦”,符合句意。

57. A。D'Antoni也同样被感动了。

58. C。她知道她不是孤军作战。

59. D。Isabella Harvey因患癌症,每周要多次往返医院,故选D。

60. A。inspire在此是“激励,鼓励”之意, 符合句意。

第二节语法填空

61. took。此处叙述过去的事情,用一般过去时态。

62. that。引导一个同位语从句,说明call的具体内容。

63. adoption。此处用名词形式做宾语。

64. older。 此处应用 形容词比 较级的形式。

65. have turned。时间副词recently通常与现在完成时连用。

66. previously。此处用副词做状语。

67. an。不定冠词在此表示泛指。

68. to find。此处应用不定式做宾补。

69. saying。现在分词做伴随状语。

70. because。此处because引导一个原因状语从句。

第四部分: 写作

第一节短文改错

1. recent→ recently。此处应用副词来修饰动词。

2. into后加a。suit在此是可数名词,应在其前面加不定冠词表泛指。

3. is→ was。根据后面的时间状语after his fourth birthday可知,此处应用一般过去时态。

4. will → would。主句的时态为一般过去时,故宾语从句的时态应用过去将来时态。

5. 去掉so。前面已有从属连词because, 故此处不能再用并列连词so。

6. off → of。 短语ahead of time意为“提前”。

7. birthdays → birthday。birthday应用单数形式。

8. dress →dressing。介词by后面应用动名词形式。

9. 去掉leap前面的to。动词see后面的不定式做宾补不带to。

10. she → he。前面讲的是boy,故用人称代词he指代。

第二节书面表达

One possible version:

Boys and girls,

I come from the countryside and my family lives in a beautiful village. So I suggest that we go to my village to help farmers with their harvest.

In my opinion,the activity will benefit us a lot. First,we can experience the rural life by doing farming work. Second, by working in the fields we can learn that it is no easy job to produce rice,which will help us to cherish food. Last but not the least,we can appreciate the beautiful natural scenery and enjoy a peaceful and quiet rural life,free from the noisy and busy city life.

3.大学英语模拟试卷二 篇三

1. It is _____ difficult work that we can’t finish it in a short time.

A. soB. suchC. so aD. such a

2. I_____you_____left for Shanghai.

A. thought; hadB. think; have

C. think; hadD. thought; have

3. I’ve decided_____it myself.

A. doB. doingC. didD. to do

4. You can’t solve the problem_____this way.

A. byB. inC. onD. to

5. I was just leaving the classroom_____it rained.

A. whileB. whenC. asD. during

6._____a big smile on his face, Mr Liu told a piece of good news to his students.

A. InB. HaveC. WithD. For

7. I won’t go away_____I see you.

A. as soon asB. becauseC. untilD. and

8. Put on your coat,_____you’ll catch a cold.

A. butB. andC. orD. ×

9. Last night I went to bed early but couldn’t_____ .

A. get to sleepB. get sleepC. fall sleepD. fall to sleep

10. Mrs Li was very angry_____her son_____his words.

A. with; withB. to; withC. with; atD. with; to

11. Would you please_____me?

A. not troubleB. not to trouble

C. to not troubleD. don’t trouble

12. How are you getting_____with your classmates?

A. onB. upC. downD. to

13. So far, we_____English for nearly three years.

A. learnB. learntC. have learntD. had learnt

14. Mr Yao is a good friend of_____.

A. myB. my fatherC. my fathers’D. my father’s

15. Fujian is_____the southeast of China.

A. atB.toC. onD. in

二､ 完形填空(10分)

One day, some workers were repairing a road. They had dug a big hole in the road. As they could not 1 their work, they had put up notice boards on both sides of the hole before they 2 . On the boards they wrote the word DANGER in order to warn people not to drop into the hole.

Some time 3 , a blind man was walking 4 the road. He was just walking in the direction of the hole. As he could not see the notice, he was walking 5 to the hole. He was very close to it now. Just at that moment, a boy saw the man and 6 up to him. “ 7 !” the boy shouted, “Don’t go any farther, or you’ll fall 8 the hole.” After he heard this, the blind man stopped 9 . Then the boy took the man by the arm and led him safely around the hole. “Thanks a lot,” said the man. “You’re really a 10 boy.”

1. A. finishB. prepareC. doD. start

2. A. leftB. beganC. stoppedD. came

3. A. agoB. beforeC. pastD. later

4. A. toB. alongC. away fromD. out of

5. A. near and nearB. nearer and nearer

C. far and farD. farther and farther

6. A. walkedB. cameC. ranD. went

7. A. HelloB. OhC. HelpD. Stop

8. A. inB. toC. intoD. at

9. A. at lastB. at onceC. at firstD. at that time

10. A. niceB. badC. naughtyD. clever

三､ 阅读理解(30分)

(A)

I felt very tired when I came home from work. I fell asleep while my one-year-old son was playing his toy. After a while, a loud knock at the door woke me up. Ah, my little son tried to open the door. From the window, he saw a kite flying in the sky. Oh, it was quite a nice kite! I got up and looked out of the window. Two boys were flying the kite. I took my son out to the yard. “I’m glad to see you，” I asked one boy. “Would you please tell me in which shop you bought the kite? My son likes it very much and I want to buy one for him.” “We made it ourselves.” “If he likes, he can take it,” said the other boy. “Thank you just the same, little boy. I’m going to make a kite for him. Thank you!”

1. How many people are there in this passage?

A. Two.B. Four.C. Three.D. Five.

2. Who is the oldest?

A. The writer.B. The little boy.C. The son.D. The boys.

3. Who made the kite?

A. The son.B. The writer.C. A worker.D. The boys.

4. Who likes the kite very much?

A. Father.B. Mother.C. The son.D. The boys.

5. How old is the son?

A. One year.B. One year old.C. One old.D. A year.

(B)

Billy had a nice shop in the main street of a small town. He sold jewelry, watches, clocks and so on. All went well some years, and then a thief stole a lot of jewelry from his shop twice in one month at night. Three weeks passed, yet the police still didn’t catch the thief. So Billy decided to try to do something about it himself. He bought a good camera and fixed it up in his shop and put some cheap jewelry in front of it for the thief, so that it could take a photo of anyone who stole the jewelry.

A few nights later， the thief came, but he did not touch any of the cheap jewelry that Billy had put out for him. He took the camera, which was worth 1，500 dollars.

6. At first all was getting on_____with Billy.

A. wellB. badlyC. quicklyD. unhappy

7. Within one month_____ .

A. Billy began to sell cameras

B. Billy sold all the things in his shop

C. a thief stole all the things in Billy’s shop

D. a thief stole much of Billy’s jewelry

8. Billy bought a camera in order to_____ .

A. take pictures for those who came to his shop

B. find out the thief with its help

C. become even richer

D. make his shop large

9. In the end of this story,_____ .

A. Billy caught the thief

B. the thief stole the expensive camera

C. the thief took away the camera and jewelry

D. the thief took away the jewelry

10. The thief in the story was very_____ .

A. stupidB. sadC. brightD. old

(C)

One day a snake was looking for food. She found a hole and went into it. “Hooray!” it was a house for mice. She said to herself happily. There, she saw some little babies of mice. “They are good dinner for me!”

She came to them and asked, “Where are your parents?” The babies answered, “They went out for food.” “Food? Good!” said the snake. “Come on and listen to me. I came here to see your parents and tell them not to steal the people’s grain any longer or I will kill you all.” The little mice worried about their own safety. “Don’t be afraid, my body is like the hole. It is a safe place. When I open my mouth, you can come into it one by one. Then we will wait for your parents coming back. Are you clear?” The little babies came into the snake from her mouth one by one.

A moment later, the mice’s parents came back with some grain. Just then they found the snake in their room. “Who are you? Why did you come into our house?” “Where are our babies?” asked the mice’s parents. The snake answered coolly, “I am a judge of the people. I knew you did a lot of bad deeds. You often steal lots of foodstuff of the people. Today, I came to sentence you to death. Your babies have been in my body. Don’t you want to see them?” With these words, the snake flew at the mice.

根据短文内容,判断下列句子的正(T)或误(F)｡

11. The snake was glad to see some little mice.

12. The little mice believed the snake.

13. The snake was very friendly to the baby mice.

14. The snake was a judge of the people.

15. At last all the mice were eaten by the snake.

四､ 词汇(10分)

(一) 根据句意和所给首字母,写出空白处所缺的单词｡

1. The boy fell off the high tree but l_____ he wasn’t badly hurt.

2. In China people usually eat m_____ on Mid-autumn Day.

3. He’s a hard-working boy. He s_____ a lot of money on books.

4. Light travels much faster than s_____.

5. I saw two f_____ in the park yesterday. I think they came from the USA.

(二) 根据句意, 用括号中所给单词的适当形式填空｡

6. There are two_____(library) in our school.

7. You look so_____(worry). What’s the trouble with you?

8. Which subject do you like_____(well), maths, English or Chinese?

9. The children enjoyed_____(them) at the party.

10. Don’t touch the machine. It’s_____(danger).

五､ 汉译英(10分)根据汉语句子,完成英语句子｡每空限填一词｡

1. 许多专家认为,到2020年,印度人口可能会比中国人口多｡

Many experts think that India’s_____may be_____than that of China by 2020.

2. 今天轮到你值日了｡

It’s your_____to be on_____today.

3. 那儿出了什么事?那么多人挤在大门口｡

What’s_____over there? So many people are_____round the gate.

4. 出门的时候别忘了锁门｡

Don’t forget to_____the door when you_____home.

5. 别插队,否则别人会生你的气｡

Don’t be a__________ , or the others will get angry with you.

六､ 补全对话(15分)

(一) 从 B 栏中找出能与A 栏各句匹配的应答语｡

(A)

1. I fell and hurt my leg just now.

2. What are you going to be when you grow up?

3. How much does a woolen sweater cost?

4. What’s your mother’s job?

5. How far is it from your home to our school?

(B)

A. I’d like to be a teacher like my father.

B. About half an hour’s walk.

C. About 200 yuan.

D. I’m sorry to hear that.

E. She’s an office worker.

(二) 根据语境,在各句空白处填入一个适当单词,使对话意思完整,语法正确｡

Paul is a kind-hearted farmer. He is riding on his horse. He is going to the market. He meets an old man on the road. The man is carrying a big bag. It is 6 of things. Paul wants to help him.

Paul: Good morning, 7 .

Man: Good morning, young man.

Paul: 8 are you going?

Man: I’m going to the market.

Paul: Do you want a ride?

Man: 9 , I’m tired.

Paul: May I help you get on the horse?

Man: Yes, please. Do you want to get on the horse, 10 ?

Paul: Yes, I do.

Man: Can your horse 11 us and my bag?

Paul: No, I don’t think so.

Man: Can you 12 , young man?

Paul: Of 13 , I can.

Man: Let’s go. It’s very 14 of you, young man.

Paul: It’s a 15 .

七､ 书面表达(10分)

以“My Mother”为题,用英语写一篇短文｡

要点:① 妈妈是护士,在县人民医院工作｡ 她工作努力,工作中严格要求自己,因此,她的同事们对她评价很高｡ ② 2003年参加抗击“非典”的战斗｡为了保护我们免受“非典”的侵害,一个多月没回家｡当时,我非常想念妈妈｡ ③ 我爱妈妈,并为有这样的妈妈而感到自豪｡

要求:1. 条理清楚,意思连贯,语句通顺,标点符号正确;

2. 要点必须叙述完整,并可适当发挥;

3. 词数:100个左右｡

参考词语: county 县; fight against 抗击; battle 战斗; SARS 非典

Key:

一､ 1-5 BADBB6-10 CCCAC11-15 AACDD

二､ 1-5 AADBB6-10 CDCBA

三､ 1-5 BADCB6-10 ADBBC11-15 TTFFT

四､ 1. luckily2. mooncakes3. spends4. sound5. foreigners

6. librarians7. worried8. best9. themselves10. dangerous

五､ 1. population， larger2. turn， duty3. happening， crowding

4. lock， leave5. queue， jumper

六､ 1-5 DACEB6. full7. sir8. Where9. Sure/Certainly10. too

11. carry12. walk13. course14. kind/nice15. pleasure

七､ One possible version:

My Mother

My mother is a nurse. She works in the People’s Hospital of our county. She works very hard. She is very strict with herself in the work. So her workmates speak highly of her.

In 2003 she took part in the battle to fight against SARS. She was away from home for more than one month. So I missed her very much, but I knew she was trying her best to protect us from SARS and she was doing an important thing.

4.五年级英语二单元试卷分析 篇四

一、试卷答题情况分析

试卷难易程度适中，涉及的知识面广，学生的听力好于读写。可以看出课堂听说的训练以及单词基础的训练对学生掌握知识很有帮助。笔试部分的第一大题的2.3.4.小题失分较多原因是学生背不过单词造成的。第三大题的1小题错把wants写成want..。原因是学生不知道everyone后面的动词加s.第五大题有15个同学失分较多。1。3小题学生只会用动词短语来替换不知道改变其形式造成失分。在今后的教学中还应在仿写句子上 下大工夫。

二、改进措施

1、教学中要继续突出学生的主体地位。小学五年级还处于英语学习的起始阶段，所以一切教学活动的设计和开展应符合学生的心理和生理特点，遵循语言学习的规律，用多种手段激发学习兴趣，力求使学生在生动活泼的课堂活动中掌握英语基础知识，提高听、说、读、写能力。

2、继续加强语音、词汇及句型教学训练。在起始阶段教师一定要使学生过好语音关，使他们牢固掌握音标和英语字母的读音规则，以提高独立学习单词的能力。在词汇教学中教师应灵活多样地运用情景教学法、词义对比法、动作演示法、形象介绍法等方法，使学生将单词的音、形、义有效结合起来，活学活用，在轻松的氛围中学好词汇和句型，为今后进一步的学习夯实基础。

3、在教学中，把交际能力的培养放在十分突出的位置。小学生模仿能力强，记忆力好，但是活泼好动，教师要利用这一特点，努力激发学生的学习兴趣，采用角色表演、游戏、情景对话、教唱英文歌曲等直观形象的教学方法，结合图片、简笔画、动作表演等教学手段，培养和发展学生的英语语言交际能力。

4、深钻教材，充分利用教材，把握教学内容的深度与广度，培养学生的参与意识和语言交际能力;适当进行知识拓展,积累知识，及时巩固，强化训练，有效提高成绩，在积累知识的基础上提高学生能力。

5、教学中尊重学生的个体差异，不放弃任何一个学生，实行分层次教学，根据不同的学情因材施教，在抓两头带中间，使成绩差的学生有信心能“吃好”，尖子生有提升能“吃饱”。

5.六级英语考试模拟试题(二) 篇五

Part II Reading Comprehension (35 minutes)

Directions: There are 4 reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.

Passage 1

In America, the movement of housing away from the high-rise buildings of the inner-cities originated in the 1920s, but was stalled by the Great Depression of the 1930s and by WW II. After the war a tremendous surge occurred in the real estate market with the advent of single-family homes on relatively small lots―typically less than one-tenth of an acre. During the 1950s, many large tract developments encroached on former farmlands near metropolitan areas. The most dramatic instances of this sprawling effect were witnessed in western municipalities such as San Jose and San Diego whose city charters defined their over several hundred square kilometers. These large parcels of land were over-run by standard three bedrooms, two bath “ranch-style” homes in a few short dcades.

6.大学英语模拟试卷二 篇六

英语学科期末质量检测出题意图

潍坊东明学校裴文静

第一大题主要考察对词组的认读，这一题目相对是比较简单的。

第二大题共6个小题，首先学生应该认识每一副图片，然后在此基础上来听音并辨别每一副图片的意思并排列顺序。

第一大题有6个小题，其中第三小题和第五小题和第六小题相对难一点，尤其是turn left与turn right易混点。同时让学生来动手画一画向左向右向前，也是有一定的难度的。既练习了听力也练习了学生动手的能力。

第四大题相对来说非常简单，聪明点的孩子不用全部听完也能连线正确，主要考察学生随机应变的能力和水平。

7.数学中考模拟试题(二) 篇七

undefined的倒数的相反数是______。

2. 分解因式x2-2xy+y2-9=______。

3.在国际金融危机对世界经济的严重冲击下, 我国政府制定出台了两年四万亿元人民币的刺激经济方案, 四万亿元用科学计数法表示为______元。

4.如图1, 已知直线l1//l2, ∠1=50°, 那么∠2=______。

5.如图2, ⊙O的半径长为10cm, 弦AB=16cm, 则圆心O到弦AB的距离为______。

6.两圆有多种位置关系, 图3中不存在的位置关系是______。

7.点Q (3-a, 5-a) 在第二象限, 则

undefined______。

8.已知矩形ABCD, 分别以AD和CD为一边向矩形外作正三角形ADE和正三角形CDF, 连接BE和BF, 则undefined的值等于______。

9.甲、乙两名同学的5次数学测验成绩 (满分120分) 如下:

甲:97 103 95 110 95

乙:90 110 95 115 90

则这两名同学在这5次数学测验中成绩比较稳定的是______同学。

10.圆锥的底面直径是8, 母线长是12, 则这个圆锥侧面展开的扇形圆心角是______度。

二、单项选择题。

(本大题共10小题, 每小题4分, 满分40分) undefined的算术平方根是 ( ) 。

A.2;undefined; C.-2;undefined

12.大学生小王毕业后自主创业, 做起了小商品生意, 第一次进货时, 他以每件a元的价格购进了20件甲种商品, 每件b元的价格购进了30件乙种商品 (a>b) ;回来后, 根据市场行情, 他将这两种小商品都以每件undefined元的价格出售, 在这次买卖中小王是 ( ) 。

A.赚钱; B.赔钱; C.不赚不赔; D.无法确定。

13.下面不可能是关于x的一次函数y = mx- (m-3) 的图像的是 ( ) 。

14.化简undefined的结果是 ( ) 。

A.-x-1; B.-x +1;undefined;undefined

15.如右图, △ABC中, ∠A=50°, 点D、E分别在AB、AC上, 则∠CED+∠BDE的大小为 ( ) 。

A.130°; B.230°;

C.180°; D.310°.

16.把抛物线y = -2x2向上平移1个单位得到的抛物线是 ( ) 。

A.y =-2 (x +1) 2; B.y =-2 (x-1) 2;

C.y = -2x2 + 1; D.y =-2x2- 1.

17.已知α为锐角, 且undefined, 那么sin (90°-α) 的值是 ( ) 。

undefined;undefined;undefined;undefined

18.如果最简二次根式undefined与undefined是同类根式, 那么使undefined有意义的x的取值范围是 ( ) 。

A.x≤10; B.x≥10;

C.x<10; D.x>10.

19.五角星的五个角的度数相同, 每一个角的度数都是 ( ) 。

A.30°; B.35°; C.36°; D.42°.

20.如右图, 在平行四边形ABCDK , 已知AD =5cm , AB =3cm, AE平分∠BAD交BC边于点E, 则EC等于 ( ) 。

A.1cm; B.2cm; C.3cm; D.4cm.

三、 解答题 (本大题共5小题, 满分70分)

21.计算: (8分)

undefined

22.阅读下文后, 回答问题。 (13分)

据美国詹姆斯·马丁的测算, 在近十年, 人类知识总量已达到每三年翻一番, 到2020年甚至要达到每73天翻一番的空前速度。因此, 基础教育的任务已不是“教会一切人一切知识, 而是让一切人学会学习!”

已知2000年底, 人类知识总量为a, 假如从2000年底到2009年底是每3年翻一番, 据此回答:

(1) 2009年底人类知识总量是多少? (4分)

(2) 2019年底人类知识总量是多少? (4分)

(3) 2020年按365天计算, 2020年底人类知识总量是多少? (5分)

23. (17分) 如图, 在梯形ABCD中, AD//BC, CA平分∠BCD, DE//AC, 交BC的延长线于点E, ∠B = 2∠E.

(1) 求证:AB=DC; (9分)

(2) 若undefined, 求边BC的长。 (8分)

24. (15分) 某湖泊养殖基地计划由23人承包58亩的水面用于养殖甲鱼、大闸蟹、河虾。规定每人只养殖一种, 且养殖大闸蟹的人数不少于4人, 其余的不少于1人, 经预算这些不同品种的水产品每人可养殖的亩数和预计每亩的产值如下表:

(1) 有几种方案安排人数才能使所有水面都能利用, 且所有人都有工作? (9分)

(2) 哪种方案总产值最大?最大产值是多少万元? (6分)

25. (17分) 如图, 已知圆P的圆心在反比例函数undefined图像上, 并与x轴相交于A、B两点, 且始终与y轴相切于定点C (0, 1) :

(1) 求经过A、B、C三点的二次函数图像的解析式; (9分)

(2) 若二次函数图像的顶点为D, 问当k为何值时, 四边形ADBP为菱形? (8分)

参考答案:

一、1.3; 2. (x-y+3) (x-y-3) ; 3.4×1012; 4.50°; 5.6cm; 6.相交; 7.3; 8.1; 9.甲; 10.120.

二、 (11～15) BACAB; (16～20) CBACB;

三、undefined; 22. (1) 8a, (2) 8192a, (3) 218a;

23. (1) 证明:∵DE//AC, ∴∠BCA = ∠E.

∵CA平分∠BCD, ∴∠BCD = 2∠BCA.

∴∠BCD = 2∠E.

又∵∠B = 2∠E, ∴∠B = ∠BCD.

∴梯形ABCD是等腰梯形, 即AB=DC.

(2) 解:作AF⊥BC, DG⊥BC, 垂足分别为F、G, 则AF//DG.

在Rt△AFB中, tanB = 2, ∴AF = 2BF.

又undefined, 且AB2 = AF2 + BF2,

∴5 = 4BF2 + BF2, 得BF = 1.

同理可知, 在Rt△DGC中, CG = 1

∵AD//BC, ∴∠DAC = ∠ACB.

undefined

undefined

24.解: (1) 设安排x人养殖甲鱼, y人养殖大闸蟹, z人养殖河虾, 依题意得:

undefined

解得:

undefined

undefined

又∵x取整数, ∴x = 12, 13, 14, 15.

相应地可得

故有四种养殖安排方案。

(2) 设预计总产值为ω万元, 则

故当x = 15时, ω最大 = 66.8 + 0.2×15 = 69.8 (万元)

25.解: (1) 连结PC、PA、PB, 过P点作PH⊥x轴, 垂足为H。

∵⊙P与y轴相切于点C (0, 1) , ∴PC⊥y轴.

∵P点在反比例函数undefined的图像上,

∴P点坐标为 (k, 1) , ∴PA = PC = k.

undefined

∵⊙P交x轴于A、B两点, 且PH⊥AB, 由垂径定理可知, PH垂直平分AB.

undefined

故过A、B两点的抛物线的对称轴为PH所在的直线, 解析式为 x = k.

可设该抛物线解析为 y = a (x -k) 2 + h.

又抛物线过C (0, 1) 、undefined,

得:

解得:a = 1, h = 1-k2.

∴抛物线解析式为 y = (x-k) 2+1-k2.

(2) 由 (1) 知抛物线顶点D坐标为 (k2, 1-k2)

∴DH = k2-1.

若四边形ADBP为菱形, 则必有PH = DH.

∵PH = 1, ∴k2-1 = 1。又undefined

8.大学英语模拟试卷二 篇八

1. 下列各数中，最大的数是（ ）.

A. 3 B. 1 C. 0 D. -5

2. 光速约为3 000 000千米/秒，将数字3 000 000用科学记数法表示为（ ）.

A. 3×104 B. 3×105 C. 3×106 D. 30×104

3. 函数y=中自变量x的取值范围是（ ）.

A. x≥0 B. x≠1 C. x>0 D. x≥0且x≠1

4. 某十字路口的交通信号灯每分钟红灯亮30秒，绿灯亮25秒，黄灯亮5秒，当你抬头看信号灯时，是黄灯的概率为（ ）.

A. B. C. D.

5. 如图是由4个大小相同的正方体搭成的几何体，其俯视图是（

6. 如图，函数y=2x和y=ax+4的图像相交于点A（m，3），则不等式2x≥ax+4的解集为（ ）.

A. x≥B. x≤3 C. x≤ D. x≥3

7. 如图，Rt△ABC中，AB=9，BC=6，∠B=90°，将△ABC折叠，使A点与BC的中点D重合，折痕为MN，则线段BN的长为（ ）.

A. B. C. 4 D. 5

8. 如图，⊙O的半径为2，AB，CD是互相垂直的两条直径，点P是⊙O上任意一点（P与A，B，C，D不重合），过点P作PM⊥AB于点M，PN⊥CD于点N，点Q是MN的中点，当点P沿着圆周转过45°时，点Q走过的路径长为（ ）.

A. B. C. D.

9. 如图，边长分别为1和2的两个等边三角形，开始它们在左边重合，大三角形固定不动，然后把小三角形自左向右平移直至移出大三角形外停止. 设小三角形移动的距离为x，两个三角形重叠面积为y，则y关于x的函数图像是（ ）.

10. 如图，若点M是x轴正半轴上的任意一点，过点M作PQ∥y轴，分别交函数y=（x>0）和y=（x>0）的图像于点P和Q，连接OP、OQ，则下列结论正确的是（ ）.

A. ∠POQ不可能等于90°

B.

C. 这两个函数的图像一定关于x轴对称

D. △POQ的面积是（k1+k2）

二、 填空题

11. 如图，△ABC内接于⊙O，OD⊥BC于D，∠A =50°，则∠OCD的度数是_______.

12. 已知∠AOB=30°，OP平分∠AOB，PC∥OB，PD⊥OB，OC=2，PD的长_______.

13. 直线m上有三个正方形，若正方形a与c的面积分别为5，11，则正方形b的面积为______，边长为_____.

14. 如图，将矩形ABCD沿直线AE折叠，顶点D恰好落在BC边上的F点处，已知CE=3，AB=8，则△AEF的面积为_______，图中阴影部分的面积为_________.

15. 已知P1（1，y1），P2（2，y2）是正比例函数y=x的图像上的两点，则y1______y2（填“>”或“<”或“=”）.

16. 从长度分别为2，4，6，7的四条线段中随机取三条，能构成三角形的概率是______.

17. 如图所示，△ABC的顶点是正方形网格的格点，则sinA的值为_____.

18. 如图，直线y=k1x+b与双曲线y=交于A、B两点，其横坐标分别为1和5，则不等式k1x<+b的解集是_______.

三、 解答题

19. （1） 计算：+（π-2）0--5+（-1）2012+-2；

（2） 解不等式组6x+15>2（4x+3），①≥x-.②

20. 已知两直线l1：y=k1x+b1，l2：y=k2x+b2，若l1⊥l2，则有k1·k2=-1.

（1） 应用：已知y=2x+1与y=kx-1垂直，求k；

（2） 直线l经过A（2，3），且与y=-x+3垂直，求直线l的解析式.

21. 省教育厅决定在全省中小学开展“关注校车、关爱学生”为主题的交通安全教育宣传周活动. 某中学为了了解本校学生的上学方式，在全校范围内随机抽查了部分学生，将收集的数据绘制成如下两幅不完整的统计图（如图所示），请根据图中提供的信息，解答下列问题.

（1） m=______%，这次共抽取______名学生进行调查，并补全条形图；

（2） 在这次抽样调查中，采用哪种上学方式的人数最多？

（3） 如果该校共有1 500名学生，请你估计该校骑自行车上学的学生约有多少名？

22. 小明、小军两同学做游戏，游戏规则是：一个不透明的文具袋中，装有型号完全相同的3支红笔和2支黑笔，两人先后从袋中取出一支笔（不放回），若两人所取笔的颜色相同，则小明胜，否则，小军胜.

（1） 请用树状图或列表法列出摸笔游戏所有可能的结果；

（2） 请计算小明获胜的概率，并指出本游戏规则是否公平，若不公平，你认为对谁有利.

23. 如图，在正方形ABCD中，等边三角形AEF的顶点E、F分别在BC和CD上.

（1） 求证：BE=DF；

（2） 若等边三角形AEF的边长为2，求正方形ABCD的长.

24. 某园艺公司对一块直角三角形的花圃进行改造，测得两直角边BC、AC的长分别为6 m、8 m. 现要将其扩建成等腰三角形，且扩充部分是以8 m为直角边的直角三角形. 求扩建后的等腰三角形花圃的面积.（画出所有情况的图形并计算）

25. 如图1所示，在A、B两地之间有汽车站C站，客车由A地驶往C站，货车由B地驶往A地. 两车同时出发，匀速行驶. 图2是客车、货车离C站的路程y1，y2（千米）与行驶时间x（小时）之间的函数关系图像.

（1） 填空：A，B两地相距_______千米；

（2） 求两小时后，货车离C站的路程y2与行驶时间x之间的函数关系式；

（3） 客、货两车何时相遇？

26. 问题探究：

（一） 新知学习：

圆内接四边形的判断定理：如果四边形对角互补，那么这个四边形内接于圆（即如果四边形EFGH的对角互补，那么四边形EFGH的四个顶点E、F、G、H都在同个圆上）.

（二） 问题解决：

已知⊙O的半径为2，AB，CD是⊙O的直径. P是上任意一点，过点P分别作AB，CD的垂线，垂足分别为N，M.

（1） 若直径AB与CD相交成120°角.

①当点P运动到的中点P1时（如图1），求MN的长；

②当点P（不与B、C重合）从B运动到C的过程中（如图2），证明MN的长为定值.

（2） 试问当直径AB与CD相交成多少度角时，MN的长取最大值，并写出其最大值.

27. 知识迁移：

已知函数y1=x（x>0）与函数y2=（x>0）， 则当x=______时，y1+y2取得最小值为______.

变形应用：

已知函数y1=x+1（x>-1）与函数y2=（x+1）2+4 （x>-1），求的最小值，并指出取得该最小值时相应的x的值.

实际应用：

已知某汽车的一次运输成本包含以下三个部分：一是固定费用，共360元；二是燃油费，每千米为1.6元；三是折旧费，它与路程的平方成正比，比例系数为0.001. 设该汽车一次运输的路程为x千米，求当x为多少时，该汽车平均每千米的运输成本最低？最低是多少元？

28. 如图，把两个全等的Rt△AOB和Rt△COD分别置于平面直角坐标系中，使直角边OB、OD在x轴上. 已知点A（1，2），过A、C两点的直线分别交x轴、y轴于点E、F. 抛物线y=ax2+bx+c经过O、A、C三点.

（1） 求该抛物线的函数解析式.

（2） 点P为线段OC上一个动点，过点P作y轴的平行线交抛物线于点M，交x轴于点N，问是否存在这样的点P，使得四边形ABPM为等腰梯形？若存在，求出此时点P的坐标；若不存在，请说明理由.