必修5 Unit 1 单元测试题

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人教版新课标高中英语 必修五Unit 1 Great scientists 单元测试 含答案详解

人教版新课标高中英语 必修五Unit 1 Great scientists  单元测试  含答案详解

Unit 1Great scientists本套试卷分为第Ⅰ卷和第Ⅱ卷两部分。

总分120分。

考试时间100分钟。

第Ⅰ卷Ⅰ.阅读理解(共两节,满分35分)第一节(共10小题;每小题2.5分,满分25分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

AMy senior year of high school was a very hectic one, to say the least. If I wasn´t studying or worrying about my grades, I was working on after-class activities. It seemed as if my life had turned into one crazy cloud of confusion and I hoped to find some sort of direction.Finally, I got a part-time job at the local coffee shop. I had thought it would be easy and, for the most part, stress-free. I pictured myself pouring coffee and becoming close friends with my customers.What I hadn´t expected were the people with so many orders. There were moments when I was very angry simply because I couldn´t seem to please anyone. There was always too much sugar, too little ice, or not enough skim milk. However, I kept at it.One day, one of my customers came in, depressed. Before he left, I handed him a bag along with his iced coffee. He looked at me questioningly because he hadn´t ordered anything but the coffee. He opened the bag and saw his favourite doughnut (甜甜圈) I had given him. He smiled and thanked me before heading out into the rain.The next evening, he came. Instead of ordering something, he handed me a single pink rose and a note.“Thanks for being so sweet and thoughtful yesterday. It is so nice to meet someone who´s warm and unselfish. Please don´t change your ways because I truly believe that you will do better. Have a great day!”As time went on, I did come across some customers really particular. But anytime I felt depressed, I thought of that man and his kindness. Then I would smile, hold my head up high, clear my throat and ask politely, “How can I help you?”1.What does the underlined word “hectic” in Paragraph 1 mean?A. Glad.B. Interesting.C. Productive.D. Busy.2.What can we know about the author´s part-time job?A. It is easy and stress-free.B. It is quite busy and challenging.C . It doesn´t need special skills. D. It gives the author a feeling of freshness.3.What´s the message the author wants to convey?A. Kind words are worth much but cost little.B. It is impossible to satisfy everyone in our life.C. A small act of kindness can make a big difference.D. Our attitude determines our suffering or our freedom.BAn idea that started in Seattle´s public library has spread throughout America and beyond. The idea is simple: help to build a sense of community in a city by getting everyone to read the same book at the same time.In addition to encouraging reading as a pursuit(爱好) to be enjoyed by all, theprogramme allows strangers to communicate by discussing the book on the bus, as well as promoting reading as an experience to be shared in families and schools. The idea came from Seattle librarian Nancy Pearl who launched (发起)the “If All of Seattle Read the Same Book” project in 1998. Her original programme used author visits, study guides and book discussion groups to bring people together with a book, but the idea has since expanded to many other American cities, and even to Hong Kong.In Chicago, the mayor appeared on television to announce the choice of To Kill a Mockingbird as the first book in the “One Book, One Chicago” programme. As a result, reading clubs and neighbourhood groups sprang up around the city. Across the US, stories emerged of parents and children reading to each other at night and strangers chatting away on the bus about plot and characters.The only problem arose in New York, where local readers could not decide on one book to represent the huge and diverse population. This may show that the idea works best in medium-sized cities or large towns, where a greater sense of unity(一致)can be achieved.Or it may show that New Yorkers rather missed the point, putting all their energy and passion into the choice of the book rather than discussion about a book itself.As Nancy points out, the level of success is not measured by how many people read a book, but by how many people are enriched by the process or have enjoyed speaking to someone with whom they would not otherwise have shared a word.4.What is the purpose of the project launched by Nancy?A.To invite authors to guide readers.B.To encourage people to read and share.C.To involve people in community services.D.To promote the friendship betweencities.5.Why was it difficult for New Yorkers to carry out the project?A.They had little interest in reading.B.They were too busy to read a book.C.They came from many different backgrounds.D.They lacked support from the local government.6.The underlined words “shared a word” in Paragraph 5 probably mean .A.exchanged ideas with each otherB.discussed the meaning of a wordC.gained life experienceed the same languageCScientific experiments can sometimes go wrong and when they do, the results may range from the disastrous (灾难性的) to the troubling. One such experiment took place in South America about fifty years ago. Whether its final consequences will cause serious damage or nothing more than a small trouble still remains to be seen.The story began in 1956 when an American scientist working in Brazil decided to solve the problem of increasing the productivity of that country´s bees. He imported a very active type of African bee from Tanzania and mated (交配) it with the more easy-going native variety to produce a new kind of bees. The new bees worked harder and produced twice as much honey. It seemed that Professor Kerr, which was the scientist´s name, had a total success on his hands.Then things began to go wrong. For some reason as yet unseen, but perhaps as a result of something in their environment, the new bees began to develop extremely attacking personalities. They became bad-tempered and easy to be angry. They attacked the native bees and drove them from their living places.But worse was to follow. Having taken over the countryside, the new bees, with their dangerous stings (刺), began to attack their neighbours—cats, dogs, horses, chickens and finally man himself. A long period of terror began that has so far killed a great number of animals and about 150 human beings.This would have been bad enough if the bees had stayed in Brazil. But now they are on the move, heading northwards in countless millions towards Central and North America, and moving at the alarming speed of 200 miles a year. The countries that lie in their path are naturally worried because it looks as if nothing can be done to stop them.7. The results of the South American experiment .A.are not importantB.are not yet certainC.have caused a serious troubleD.have proved to be wrong8. The experiment mentioned in this passage was designed to .A.make African bees less activeB.increase the number of bees in BrazilC.make Brazilian bees more easy-goingD.increase the amount of honey in Brazil9. Which of the following may be the cause of the new bees´ attacking personalities?A.Their bad temper.B.Their hard work.C.Their production of honey.D.Their living environment.10. The last paragraph implies that .A.the bees prefer to live in BrazilB.the bees must be stopped from moving northC.the bees may bring about trouble in more countriesD.the bees have been driven to Central and North America第二节阅读七选五(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。

必修5解三角形第一单元测试题 (含答案)

必修5解三角形第一单元测试题 (含答案)

数学必修5解三角形单元测试题(时间120分钟,满分150分)一、选择题:(每小题5分,共计60分)1.在△ABC 中,若BA sin sin >,则A 与B 的大小关系为( ) A. B A > B. B A < C. A ≥B D. A 、B 的大小关系不能确定 2. 在△ABC 中,b=3,c=3,B=300,则a 等于( )A .3B .123C .3或23D .2 3. 不解三角形,下列判断中正确的是( )A .a=2,b=4,A=300有两解B .a=30,b=25,A=1500有一解C .a=6,b=9,A=450有两解D .a=9,c=10,B=600无解4. 已知△ABC 的周长为9,且4:2:3sin :sin :sin =C B A ,则cosC 的值为( )A .41-B .41 C .32-D .32 5. 在△ABC 中,A =60°,b =1,其面积为3,则CB A cb a sin sin sin ++++等于( )A .33B .3392C .338D .2396.(2013年高考湖南卷)在锐角中ABC ∆,角,A B 所对的边长分别为,a b 若2sin 3,a B b A =则角等于( ) A.12π B.6π C.4π D.3π 7.已知锐角三角形的边长分别为1,3,a ,则a 的范围是( )A .()10,8B .()8,10 C . ()10,8D .()10,88.在△ABC 中,若cCb B a A sin cos cos ==,则△ABC 是( ) A .有一内角为30°的直角三角形B .等腰直角三角形C .有一内角为30°的等腰三角形D .等边三角形9. △ABC 中,若c=ab b a ++22,则角C 的度数是( ) A.60°或120° B.60° C. 45° D.120° 10. 在△ABC 中,若b=22,a=2,且三角形有解,则A 的取值范围是( ) A.0°<A <30° B.0°<A ≤45° C.0°<A <90° D.30°<A <60°11. 已知△ABC 的三边长6,5,3===c b a ,则△ABC 的面积为 ( )A . 14B .15C . 142D .15212.(2013年高考陕西卷)设△ABC 的内角A , B , C 所对的边分别为a , b , c ,若cos cos sin b C c B a A +=, 则△ABC 的形状为( )(A) 锐角三角形 (B)直角三角形 (C)钝角三角形 (D) 不确定 二、填空题(每小题5分,满分20分)13.(2013新课标Ⅱ)设θ为第二象限角,若1tan()42πθ+=,则sin cos θθ+=______. 14. 在等腰三角形 ABC 中,已知sinA ∶sinB=1∶2,底边BC=10,则△ABC 的 周长是 .15. 在△ABC 中,已知sinA ∶sinB ∶sinC=3∶5∶7,则此三角形的最大内角的 度数等于________.16. 已知△ABC 的三边分别是a 、b 、c ,且面积4222c b a S -+=,则角C=_______.三、解答题(70分)17. (本题满分10分)已知a =33,c =2,B =150°,求边b 的长及三角形面积.18. (本题满分12分)在△ABC 中,已知a-b=4,a+c=2b ,且最大角为120°,求△ABC 的三边长.19. (本题满分12分)在△ABC 中,证明:2222112cos 2cos ba b B a A -=-。

高二英语必修5unit1,2,3测试题

高二英语必修5unit1,2,3测试题

高二英语必修5unit1,2,3测试题制卷人:袁建平一、单词拼写(须用本单元的单词和词汇)(每空1分)1. He finished his work in a__________________(积极的) way.2. We must try to _________________(分析)the causes of the strike.3. He became____________________(狂热的) about classical music.4. He has______________________(完成)the whole job already.5. In the factory the workers______________(纺成线)wool into thread6. Be c_________________when you cross the street.7. You should not r_________________the invitation from your old friend.8. What is your v__________________on Chinese education?9. The police are watching the man's m_________________secretly.10. The class needs a s__________________teacher.11. Kindness is one of the prime minister's __________________(特征).12. Britain_________________(议定) a trade agreement with China.13. Don't ________________(暴露) your skin to the sun or you will be burned.14. The _________(贵重的) culture relics will be on show in Guangzhou Art Museum in October.15. The famous Korean play actor got an________(热情的) reception in Hong Kong.16. The most important thing is not to admit ________________(失败)-17. Water and salt are _____________(吸收) into our blood stream everyday.18. If a doctor or a medical treatment c__________someone's illness, they make thepeople well again.19. A v_____________is a kind of germ that can cause disease.20. If you a_____________something, you consider it carefully or use some methods in order to fully understand it.21. This medical team _______ _______ (由…组成) seven doctors and fifteen nurses.22. You should try your best to _______ ________ _______ (改掉) such bad habits.23. __________ _________ (为方便起见), the two groups have been treated as one in this report.24. ______ _______ _______ _________ (使她十分惊奇的是), Zhang Pingyu found the Queen’s jewels _________ (守卫着) by special royal soldiers.25. Do you agree to his suggestion that the meeting _____ ______ ______ (推迟) till next week?二、完成句子(每题1分)26. 时间滞后症和乘飞机时得的时差反应相似。

潍坊一中学案高二数学列单元测试题(一)

潍坊一中学案高二数学列单元测试题(一)

高二数学必修5数 列单元测试题(一)(时间90分钟,满分120分)一、选择题(本大题共10小题,每小题5分,共50分)1.我们把1,3,6,10,15,…这些数叫做三角形数,因为这些数目的点可以排成一个正三角形,如下图所示:则第七个三角形数是( )A .27B .28C .29D .302.(2014·丹东高二检测)已知数列{a n }中,a 3=2,a 7=1,又数列⎩⎪⎨⎪⎧⎭⎪⎬⎪⎫11+a n 是等差数列,则a 11等于()A .0 B.12 C.23 D .-13.已知等差数列{a n }中,a 7+a 9=16,a 4=1,则a 12的值是( ) A .15 B .30 C .31 D .644.等比数列{a n }中,a 2=9,a 5=243,则{a n }的前4项和为( ) A .81 B .120 C .168 D .1925.(2014·东营高二检测)等差数列{a n }的公差不为零,首项a 1=1,a 2是a 1和a 5的等比中项,则数列的前10项之和是( )A .90B .100C .145D .1906.若数列{a n }的通项公式是a n =(-1)n ·(3n -2),则a 1+a 2+…+a 10=( ) A .15 B .12 C .-12 D .-157.已知数列{a n }满足a n +1=11-a n ,若a 1=12,则a 2 012等于( )A.12 B .2 C .-1 D .18.设数列{a n }是以2为首项,1为公差的等差数列,{b n }是以1为首项,2为公比的等比数列,则ab 1+ab 2+…+ab 10等于( )A .1 033B .1 034C .2 057D .2 0589.已知数列{a n }中,a 1=1,前n 项和为S n ,且点P (a n ,a n +1)(n ∈N *)在直线x -y +1=0上,则1S 1+1S 2+1S 3+…+1S n等于( )A.2n n +1 B.2n (n +1) C.n (n +1)2 D.n2(n +1)10.已知数列{a n }的通项公式为a n =⎩⎪⎨⎪⎧n (n 为奇数),2n2(n 为偶数),S n 为数列{a n }的前n 项和,则S 20=( )A .2 246B .2 148C .2 146D .2 248 二、填空题(本大题共4小题,每小题5分,共20分)11.若数列{a n }满足:a 1=1,a n +1=2a n (n ∈N *), 则a 5=________.12.首项为-24的等差数列从第10项起开始为正数,则公差d 的取值范围是________. 13.等差数列{a n }中,a 1>0,S 3=S 10,则当S n 取最大值时n 的值是________.14.某房地产开发商在销售一幢23层的商品楼之前按下列方法确定房价:由于首层与顶层均为复式结构,因此首层价格为a 1元/m 2,顶层由于景观好价格为a 2元/m 2,第2层价格为a 元/m 2,从第3层开始每层在前1层价格上加价a100元/m 2,则该商品房各层的平均价格为________.三、解答题(本大题共4小题,共50分.解答应写出文字说明、证明过程或演算步骤)15.(本小题满分12分)公差d ≠0的等差数列{a n }的前n 项和为S n ,若a 4是a 3与a 7的等比中项,且S 8=32,求S 10的大小.16.(本小题满分12分)(2013·陕西高考)设S n 表示数列{a n }的前n 项和.(1)若{a n}是等差数列,推导S n的计算公式;(2)若a1=1,q≠0,且对所有正整数n,有S n=1-q n 1-q,判断{a n}是否为等比数列,并证明你的结论.17.(本小题满分12分)(2013·四川高考)在等比数列{a n}中,a2-a1=2,且2a2为3a1和a3的等差中项,求数列{a n}的首项、公比及前n项和.18.(本小题满分14分)设数列{a n}的前n项和为S n,若对于任意的正整数n都有S n=2a n-3n.(1)设b n=a n+3,求证:数列{b n}是等比数列,并求出{a n}的通项公式;(2)求数列{na n}的前n项和.高二数学必修5数列单元测试题(一)参考答案一、选择题1.【解析】按照规律,第六个三角形数为15+6=21,第七个三角形数为21+7=28.【答案】B 2.【解析】 设数列{b n }的通项b n =11+a n ,因{b n }为等差数列,b 3=11+a 3=13,b 7=11+a 7=12,公差d =b 7-b 34=124,∴b 11=b 3+(11-3)d =13+8×124=23,即得1+a 11=32,a 11=12.【答案】 B3.【解析】 由a 7+a 9=16,得a 8=8,∴d =8-18-4=74,∴a 12=1+8×74=15.【答案】 A4.【解析】 ∵a 5=a 2q 3,∴q 3=a 5a 2=2439=27,∴q =3,∴a 1=3,∴S 4=3(1-34)1-3=120. 5.【解析】 设公差为d ,∴(1+d )2=1×(1+4d ),∵d ≠0,∴d =2,从而S 10=100.6.【解析】 记b n =3n -2,则数列{b n }是以1为首项,3为公差的等差数列,所以a 1+a 2+…+a 9+a 10=(-b 1)+b 2+…+(-b 9)+b 10=(b 2-b 1)+(b 4-b 3)+…+(b 10-b 9)=5×3=15.故选A.7.【解析】 由a 1=12,a n +1=11-a n 得a 2=11-a 1=2,a 3=11-a 2=-1,a 4=11-a 3=12,a 5=11-a 4=2,…,因此a 2 012=a 3×670+2=a 2=2.【答案】 B8.【解析】 由已知可得a n =n +1,b n =2n -1,于是ab n =b n +1,因此ab 1+ab 2+…+ab 10=(b 1+1)+(b 2+1)+…+(b 10+1)=b 1+b 2+…+b 10+10=20+21+…+29+10=1-2101-2+10=1 033.【答案】 A9.【解析】 由题意,a n -a n +1+1=0.∴a n +1-a n =1,∴{a n }为等差数列,且a 1=1,d =1,∴a n =1+(n -1)×1=n ,∴S n =n (n +1)2,∴1S n=2n (n +1)=2(1n -1n +1),∴1S 1+1S 2+…+1S n=2(1-12+12-13+…+1n -1n +1)=2nn +1.【答案】A10.【解析】 S 20=(1+3+5+…+19)+(2+22+…+210)=2 146.【答案】 C 二、填空题11.【解析】由已知a n +1a n =2,∴{a n }为首项a 1=1,公比q =2的等比数列,∴a 5=a 1q 4=1×24=16.12.【解析】 设a 1=-24,公差为d ,∴a 10=-24+9d >0且a 9=-24+8d ≤0,∴83<d ≤3. 13.【解析】 由S 3=S 10可知,a 4+a 5+a 6+a 7+a 8+a 9+a 10=0,∴a 7=0.又a 1>0,∴a 6>0,∴S n 取最大值时,n 的值为6或7.【答案】 6或714.【解析】 设第2层到第22层的价格构成数列{b n },则{b n }是等差数列,b 1=a ,公差d =a 100,共21项.所以其和为S 21=21a +21×202·a 100=23.1a .故平均价格为123(a 1+a 2+23.1a )元/m 2. 三、解答题15.【解】 根据题意得⎩⎨⎧ (a 1+3d )2=(a 1+2d )(a 1+6d ),8a 1+28d =32,解得⎩⎨⎧a 1=-3,d =2,所以S 10=S 8+a 9+a 10=32+2a 1+17d =60. 16.【解】 (1)方法一:设{a n }的公差为d ,则 S n =a 1+a 2+…+a n =a 1+(a 1+d )+…+[a 1+(n -1)d ]. 又S n =a n +(a n -d )+…+[a n -(n -1)d ], ∴2S n =n (a 1+a n ),∴S n =n (a 1+a n )2. 方法二:设{a n }的公差为d ,则S n =a 1+a 2+…+a n =a 1+(a 1+d )+…+[a 1+(n -1)d ]. 又S n =a n +a n -1+…+a 1=[a 1+(n -1)d ]+[a 1+(n -2)d ]+…+a 1,∴2S n =[2a 1+(n -1)d ]+[2a 1+(n -1)d ]+…+[2a 1+(n -1)d ]=2na 1+n (n -1)d , ∴S n =na 1+n (n -1)2d .(2){a n }是等比数列.证明如下: ∵S n =1-q n1-q,∴a n +1=S n +1-S n =1-q n +11-q -1-q n 1-q =q n (1-q )1-q =q n.∵a 1=1,q ≠0,∴当n ≥1时,有a n +1a n =q nq n -1=q .因此,{a n }是首项为1且公比为q (q ≠0)的等比数列. 17.【解】 设该数列的公比为q . 由已知,得⎩⎨⎧a 1q -a 1=2,4a 1q =3a 1+a 1q 2,所以⎩⎨⎧ a 1(q -1)=2,q 2-4q +3=0,解得⎩⎨⎧a 1=1,q =3.(q =1舍去)故首项a 1=1,公比q =3. 所以数列的前n 项和S n =3n -12.18.(本小题满分14分)设数列{a n }的前n 项和为S n ,若对于任意的正整数n 都有S n =2a n -3n . (1)设b n =a n +3,求证:数列{b n }是等比数列,并求出{a n }的通项公式; (2)求数列{na n }的前n 项和.【解】 (1)∵S n =2a n -3n 对于任意的正整数都成立, ∴S n +1=2a n +1-3(n +1),两式相减,得S n +1-S n =2a n +1-3(n +1)-2a n +3n . ∴a n +1=2a n +1-2a n -3,即a n +1=2a n +3,∴a n +1+3=2(a n +3),即b n +1b n =a n +1+3a n +3=2对一切正整数都成立.∴数列{b n }是等比数列.由已知得S 1=2a 1-3,即a 1=2a 1-3,∴a 1=3, ∴首项b 1=a 1+3=6,公比q =2,∴b n =6·2n -1. ∴a n =6·2n -1-3=3·2n -3. (2)∵na n =3×n ·2n -3n ,∴S n =3(1·2+2·22+3·23+…+n ·2n )-3(1+2+3+…+n ), 2S n =3(1·22+2·23+3·24+…+n ·2n +1)-6(1+2+3+…+n ), -S n =3(2+22+23+…+2n )-3n ·2n +1+3(1+2+3+…+n ) =3·2(2n -1)2-1-6n ·2n +3n (n +1)2,∴S n =(6n -6)·2n +6-3n (n +1)2.。

高中英语 人教版必修一Unit5 单元测试卷 (有详解答案)

高中英语 人教版必修一Unit5 单元测试卷 (有详解答案)

必修一Unit5 Nelson Mandela— a modern hero单元测试卷(满分:120分时间:100分钟)第一部分: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A、B、C和D四个选项中,选出最佳选项。

ABenjamin West, the father of American painting, showed his talent for art when he was only six years of age. But he did not know about brushes before a visitor told him he needed one. In those days, a brush was made from camel's hair. There were no camels nearby. Benjamin decided that cat hair would work instead. He cut some fur from the family cat to make a brush.The brush did not last long. Soon Benjamin needed more fur. Before long, the cat began to look ragged (蓬乱). His father said that the cat must be sick. Benjamin was forced to admit what he had been doing.The cat's lot was about to improve. That year, one of Benjamin's cousins, Mr. Pennington, came to visit. He was impressed with Benjamin's drawings. When he went home, he sent Benjamin a box of paint and some brushes. He also sent six engravings (版画) by an artist. These were the first pictures and first real paint and brushes Benjamin had ever seen.In 1747, when Benjamin was nine years old, Mr. Pennington returned for another visit. He was amazed at what Benjamin had done with his gift. He asked Benjamin's parents if he might take the boy back to Philadelphia for a visit.In the city, Mr. Pennington gave Benjamin materials for creating oil paintings. The boy began a landscape (风景) painting. William Williams, a well­known painter, came to see him work. Williams was impressed with Benjamin and gave him two classic books on painting to take home. The books were long and dull. Benjamin could read only a little, having been a poor student. But he later said, “Those two books were my companions by day, and under my pillow at night.” While it is likely that he understood very little of the books, they were his introduction to classical paintings. The nine­year­old boy decided then that he would be an artist.1.What is the text mainly about?A.Benjamin's visit to Philadelphia.B.Williams' influence on Benjamin.C.The beginning of Benjamin's life as an artist.D.The friendship between Benjamin and Pennington.2.What does the underlined sentence in paragraph 3 suggest?A.The cat would be closely watched.B.The cat would get some medical care.C.Benjamin would leave his home shortly.D.Benjamin would have real brushes soon.3.What did Pennington do to help Benjamin develop his talent?A.He took him to see painting exhibitions.B.He provided him with painting materials.C.He sent him to a school in Philadelphia.D.He taught him how to make engravings.BDevon Gallagher, a college graduate from Philadelphia, wants the world to know exactly where she's been during her worldwide vacation in a special way.The traveler, who was born with a bone disease, had her right leg amputated (截肢) at the age of four. Although the amputation caused setbacks for Gallagher early on, she now sees it as nothing short of inspiration for living her best life.To spread that message, Gallagher has taken to social media, where she shares photos of her travels across the globe, but instead of simply using a geo­tagging, she writes her location across her artificial leg before taking a picture.Now she has been taking pictures across the Continent, which show her cycling over the canal in Amsterdam relaxing on a wall overlooking the city of Barcelona, posing with a waffle in Brussels, taking spectacular pictures in Athens and enjoying a river cruise in Budapest, all with the well­known locations written on her artificial leg.“I get a new leg every two years and I can choose the design on it. One day I had a sudden thought to get a chalkboard,” Gallagher said. “My mum and grandmother weren't too keen on the idea, but my friends thought it was great and told me to go for it, so I did.”Gallagher said people often stare when she's writing on her leg, but once she shares the photos, she receives only positive feedback. “My leg hasn't stopped me from doing anything I've wanted to do,” she said. “I don't know if it's my determination to prove to myself that I can do it, but regardless, I've been able to keep up with my peers and lead a pretty great life.”Gallagher shows us that you should never let anything stand in the way of your dreams. And if life gives you an artificial leg, make art.4.What message did Gallagher want to spread in her specialway?A.She enjoys her traveling across the globe.B.She suffers little from her leg amputation.C.She looks on her misfortune as another form of blessing.D.She has exactly fallen in love with posting photos online.5.What does the word “which” underlined in Paragraph 4 refer to?A.The Continent.B.The pictures.C.The leg. D.The locations.6.Gallagher can best be described as ________.A.helpful and ambitiousB.friendly and generousC.determined and creativeD.independent and sensible7.Which of the following might be the best title for the text?A.Never Too Late to ShareB.A Special Artificial LegC.An Outstanding PhotographerD.Gallagher's Summer HolidaysCI'm an American­born Chinese. I wouldn't say I'm more American than Chinese or vice versa. My character was equally molded by both cultures. For a long time, I was comfortable with being from two cultures. I was fluent in “Chinglish”.However, as I grew up, something unexpected rose, causing a parallel tension between the two corresponding cultures. During Chinese events when I was in China, the host would sometimes make fun of America. My relatives would look at me and laugh, asking me how I felt. But how could I respond to a question like that? If I said I was uncomfortable, it would just make me seem even more American in their eyes. But I couldn't pretend to laugh either. So, I often just stayed quiet and smiled.Sometimes, I'd leave China feeling less Chinese than when I went in.This past summer, on my way back to Rochester, a man at the airport kept asking my father and I where we were from. When I told him I was from the United States, he didn't seem to believe me.He then went on to ask the terrible question, “But like where are you really from, like, where were you born?” And no matter how specific our answers were, the man still seemed a little doubtful. He then went on to ask us if we knew where Tampa, Florida was and if we knew anything about it. It's moments like these when I realize that sometimes my appearance makes it hard for me to seem fully American.These experiences made me question if I was more Chinese or American.I felt like I was neither. So, if I wasn't completely one culture or the other, what was I? In China, I would feel more American, while in America, I would feel more Chinese. There was no balance between my two cultures.But this doesn't mean that I don't embrace both my identities. I love both my Chinese cultural identity and my American one. I just need to learn to love them together.8.How did the author feel about his identity at the very beginning?A.Special. B.Confident.C.Confused. D.Ridiculous.9.Why did the author feel less Chinese when he left China?A.Because he found it hard to remain quiet and have a big smile.B.Because he was unable to speak fluent Chinese at his hometown.C.Because he had lost face in front of his relatives and friends.D.Because he was treated as an American by his Chinese relatives.10.What made the man at the airport keep questioning where the author was from?A.His cultures. B.His experience.C.His look. D.His air tickets.11.What could be the best title of the passage?A.Being Culturally HomelessB.A Boy with Two IdentitiesC.A Chinese Boy Born in AmericaD.Better Chinese than AmericanDJ. K. Rowling frequently shows there is magic every day. Her Harry Potter series has helped people through times of stress and depression and she is always there to deliver wise words of encouragement.She is one celebrity who is very active on Twitter. So when a single dad named Matt Burke sent her a message thanking her for the series, she noticed. Her series had helped strengthen his relationship with his 9­year­old daughter Bailey.He included a link to his article titled Being a Broke Parent. He explained how he hadn't found a level of financial stability that allowed him to pay bills on time and take his daughter on more activities and events. The family also doesn't have the Internet or TV, which means there's no “digital babysitter”,and he has to rely on his own creative ways to bond with his daughter. Since he received the series, the main thing that has occupied them these days is reading books together.Burke admits that he thought he was “too cool” for the books when they first came out and he was in his twenties, but he's loving reading them now. “We switch off chapter by chapter reading them out loud,” Burke explains. “This not only allows her to get more used to reading aloud infront of someone, but it gets me directly involved in something she loves, and it gives me the chance to be very dramatic when I read my chapters and bring myself into the characters in the book, which has proven to be a ton of fun.”After hearing Burke's story, Rowling said how honored she was when Harry Potter was a part of his family's life and offered Burke more signed books. Besides, people are also offering to send Burke more books as gifts. For Burke, this experience, far more than gifts, will be what he treasures.12.Why did Burke thank J. K. Rowling according to the text?A.She guided him how to write a good story.B.She encouraged him when he was in trouble.C.Her books helped him through times of confusion.D.Her books helped him improve his bond with his daughter.13.What is implied in Burke's words in Paragraph 4?A.He has found it interesting to read the series.B.He was too old to understand the series better.C.He has chosen a better way of reading the series.D.He hopes to play a role in the drama in the future.14.Which word can best describe Burke's experience according to the text?A.Unique. B.Normal.C.Precious. D.Funny.15.What is the main idea of this text?A.J. K. Rowling chooses to help improve kids' health.B.J. K. Rowling gives a magical gift to a single father.C.J. K. Rowling has a deep influence on others' growth.D.Burke comes to know J. K. Rowling through her series.第二节:.阅读七选五(共5小题,每小题2分,共10分)How to Win Votes in a School ElectionIn many ways, school elections are just like elections anywhere else. __16__ You will also need to work hard to make sure people know who you are and why they should vote for you.•Decide what position to run for. __17__ Make sure you know what the position does, and what you will be able to do once you get there. There are limits to what you can do while in office, so knowing your responsibilities can keep you from making foolish campaign promises that you can't keep.•__18__ Talk to your friends about running, make sure they think it is a good idea, and ask for their help in running. You won't be able to do this alone. It looks good if the people who know you best will vote for you. Your network can also help with more practical activities, such asdesigning and making posters and encouraging their classmates to vote for you.•Advertise yourself. You and your campaign team should make posters, T­shirts, and other items that will let other students learn your name even if you don't get to talk to them. __19__•Encourage people to vote. Sometimes the hardest thing is actually getting people to participate in the election. __20__ Get people familiar with you so that they trust you enough to give you their vote.A.Create a network.B.Argue with people.C.Therefore, they will eventually vote for someone else.D.Speak to as many people as you can throughout the school.E.Student organizations have many offices with different responsibilities.F.To win over voters, you need to reach out to as many voters as possible.G.The most important is to include your name and the position on everything you make.第二部分:语言知识运用(共两节,满分45分)第一节(共20小题,每小题1.5分,满分30分)(2020·福建三校高三联考)Draper, the owner of a secondhand bookstore, was sorting through a pile of old books when an envelope fell from one. Inside was an undated __21__ and a faded photo of a woman holding a little girl on her lap. The letter said if Bethany was __22__ it, it meant the author had died.Tears were welling up in Draper's eyes. These were a __23__ woman's last words to her child. He had to __24__ Bethany. “Whoever it is will __25__ this,”he thought. “You wouldn't __26__ a letter like that.”He supposed if the __27__ ended up in his shop then Bethany was likely from around Bishop Auckland. And he thought he __28__ recognized the little girl's face. Even if she'd since left the area, there might be someone in the town who would recognize the __29__.He started with the local newspaper. The Northern Echo ran the story of the __30__ letter.__31__,Bethany Gash, now 21 and a(n) __32__ herself, was on Facebook about 10 miles away when a close friend messaged her to check out the __33__. As she read her mother's __34__,which she thought had been lost forever, she said she thought she must be __35__.Bethany was only 4 when her mother __36__. Five years later, her family moved to a new home and the letter, put away in the pages of a book for safe keeping, was unintentionally __37__.She remembers unpacking and looking for the letter, and then __38__ searching through everything in the hope that it was there. “That's when I realized it was __39__ gone by now and I'd never see it again,” she said.Draper __40__ the letter in person. He also brought her a children's book for her son. Bethany was greatly moved to have the letter back, and also touched by the stranger's kindness.21.A.message B.email C.postcard D.letter 22.A.reading B.destroying C.forgetting D.copying 23.A.determined B.kind C.selfish D.dying 24.A.find B.introduce C.phone D.comfort 25.A.enjoy B.avoid C.want D.like 26.A.tear up B.throw away C.cut up D.pull out 27.A.book B.girl C.reporter D.news 28.A.hardly B.accidentallyC.unfortunately D.actually 29.A.author B.picture C.teacher D.stranger 30.A.wet B.valuable C.lost D.broken 31.A.However B.Therefore C.Meanwhile D.Eventually 32.A.mother B.editor C.daughter D.assistant 33.A.ticket B.magazine C.homework D.article 34.A.vocabularies B.terms C.words D.languages 35.A.writing B.dreaming C.joking D.playing 36.A.came back B.died out C.passed away D.calmed down 37.A.burned B.donated C.dirtied D.robbed38.A.madly B.suddenlyC.secretly D.regularly39.A.almost B.longC.still D.never40.A.kept B.composedC.delivered D.published第二节.语法填空(共10小题,每小题1.5分,满分15分)Former International Olympic Committee (IOC) President Juan Antonio Samaranch, who blazed a trail (开辟道路) for China's Olympic dreams, __41__ (award) the China Reform Friendship Medal on the grand gathering celebrating the 40th anniversary of the country's reform and opening­up.As one of the ten foreigners who were honored __42__ the medal, Samaranch (1920-2010) served as the chief of the IOC from 1980 — when China returned to the Olympics after more than two decades — to 2001, during which Beijing won __43__ bid to host the 2008 Olympic Games.He has developed a lasting friendship with China.In March 1982, during a meeting in Beijing with Deng Xiaoping, __44__ (praise) as the chief architect of China's reform and opening­up policy, Samaranch advised that China __45__ (be) a candidate to host the Olympics.The 1984 Los Angeles Olympic Games witnessed the birth of China's first Olympic champion — Xu Haifeng, __46__ gold medal in the men's free shooting event was presented by Samaranch at the ceremony.In 1991, China __47__ (eventual) submitted its bid for the 2000 Olympic Games. Even though Beijing lost the race by just two votes to Sydney, China made such a good __48__ (impress) on the IOC that Samaranch invited Beijing to bid again for the 2008 Olympics. The Beijing 2008 bid committee members went __49__ (crazy) as Samaranch announced Beijing as the host of the 2008 Summer Olympic Games in Moscow, Russia, July 13, 2001.After his retirement the same year, Samaranch paid multiple visits to China and brought many officials who once organized the Barcelona 1992 Summer Olympics __50__ (assist) with the Beijing Games.第三部分写作(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处语言错误, 每句中最多有两处错误仅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(), 并在其下面写出该加的词.删除:把多余的词用(\)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.Last Sunday I went to a animal hospital to help the doctors there. I arrived at the hospitalearly in the morning. And there were already much work to do:giving the pets food and water, and even giving them kisses on the heads.At first, they looked at me with frightening eyes. A doctor says to them,“Don't worry, and everything will be OK.”I washed a dog's hurt leg. I worked careful to make sure I didn't hurt him.I wished he could know we were just trying help him. It was a long day and the work made me tired, and I was very happy. I knew I loved animal. And the animals knew I loved him. They enjoyed about my care with love!第二节书面表达(满分25分)假定你是李华,你通过MSN得知去年曾在你校客座教授英语的Jack Wood 最近在打篮球时摔倒严重伤了右肩,你很挂念他的伤情并告知他你看到了他的博客(Traveling Along The Old Silk Road in Gansu).请你依据以下内容给他写一封信,内容主要包括:1)慰问他的伤情;2)简要评论他的博客;3)对他曾经的教学印象深刻,获益匪浅,希望今后多联系.注意:1)词数100左右;2)可以适当增加细节,以使行文连贯.3)开头及结尾已为你写好,不计入总词数.Dear Jack Wood,How worried I am to hear the news that you had your right shoulder injured seriously after falling down while playing basketball._______________________________________________________________________________ _______________________________________________________________________________Sincerely yours,Li Hu参考答案1—5CDBCB 6—10 CBBDC 11—15 ADACB 16—20 FEAGD21—25 DADAC 26—30 BADBC 31—35 CADCB 36—40 CBABC41.was awarded42. with43. the44. praised 45. (should) be46.whose47. eventually 48. impression49. crazy50. to assist短文改错答案:第一句:a→an第三句:were→was第四句:frightening→frightened第五句:says→said第七句:careful→carefully第八句:help前加to第九句:第二个and→but第十句:animal→animals第十一句:him→them第十二句:去掉about详解答案第一部分A 篇1.解析:选C主旨大意题。

外研版高二英语必修5全册单元测试题(带答案)

外研版高二英语必修5全册单元测试题(带答案)

外研版高二英语必修5全册单元测试题(带答案)Module1综合技能测试时间90分钟满分100分Ⅰ.单项填空(每小题1分,共15分)从题中所给的A、B、C、D四个选项中选出一个最佳答案。

1.Itwas________yourtimelyhelpthatwefinishedthetaskontime. A.thanktoB.thankstoC.thanksforD.thankfor答案:B题意:多亏你及时帮忙,我们才按时完成了任务。

thanksto“由于,多亏”,为固定搭配。

2.Allmyclassmateswere________myideathatweshouldgoonanoutingnext week.A.inhonorofB.inmemoryofC.infavorofD.incaseof答案:C题意:我的同学都支持我的主意:即下周去郊游。

infavorof“同意;支持”,符合题意。

inhonorof“向……表示敬意,向……祝贺”;inmemoryof“纪念,追念”;incaseof“假设,万一”。

3.Hewas________bythecommitteeforfailingtoreporttheaccident. A.settledB.complainedC.informedD.criticized答案:D题意:他因为没有报道这次事故而受到委员会的批评。

criticize“批评”,符合题意。

settle“解决,驻扎”;complain“埋怨”;inform“通知”。

4.Theinstructionsonthebottlearereally________.Ican'tunderstandthemat all.A.encouragedB.variousC.confusingD.standard答案:C题意:瓶子上的说明非常难懂,我根本不理解。

confusing“令人困惑的”,符合题意。

小学数学必修5第一单元测试题(附答案)

小学数学必修5第一单元测试题(附答案)

小学数学必修5第一单元测试题(附答案)一、选择题1. 下列哪个数是1.235的百分之一?- A. 0.- B. 0.- C. 0.1235- D. 0.- Answer: B2. 计算:4.2 + (-3.5) = ?- A. 0.7- B. 0.75- C. -0.7- D. -0.75- Answer: C3. 一件商品原价100元,现打8折后出售,打折后的价格是多少元?- A. 20- B. 80- C. 92- D. 120- Answer: C4. 在12小时内,指针会走过12个格子,那么在1小时内,指针会走过几个格子?- A. 6- B. 10- C. 12- D. 24- Answer: B5. 三个相同的珠子平均分给4个人,每人得到的珠子数是多少?- A. 0- B. 0.75- C. 1- D. 1.25- Answer: B二、填空题1. 5 × 2 = ?- Answer: 102. 4.75 ÷ 0.5 = ?- Answer: 9.53. 38.2 × 0.1 = ?- Answer: 3.824. 7.5 ÷ 4 = ?- Answer: 1.8755. (7 + 5) × 3 = ?- Answer: 36三、解答题1. 将14分之1的大片地均匀分给7个人,每人分多少?- Answer: 每人分得2分。

2. 小明去超市买了一件原价50元的衣服,打8折后实付多少钱?- Answer: 小明实付40元。

3. 小红有42块糖,她拿出总数的三分之二分给小明,还剩多少块?- Answer: 小红还剩14块糖。

4. 小华家买了一箱苹果,有20斤,每斤7元,总共花了多少钱?- Answer: 小华家总共花了140元。

5. 小明和小红一起去公园,他们每人带了3个糖果。

他们两人总共带了多少个糖果?- Answer: 小明和小红总共带了6个糖果。

新外研版英语必修一_Unit 5 单元测试 提升卷(解析版)

新外研版英语必修一_Unit 5 单元测试 提升卷(解析版)

Unit 5 【单元测试·提升卷】(满分:150分时间:120分钟)第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5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。

1.Why can’t the woman keep up with her classmates?A.Because she could have played more.B.Because she studied too much.C.Because she doesn’t study hard enough.2.What is Mr.Brown?A.A boss.B.A waiter.C.A teacher.3.When will the light be shut off?A.At 10:15.B.At 10:30.C.At 9:45.4.What does the man want to do with the coins?A.To lend them to the woman.B.To make a phone call.C.To use them for bus fare.5. In which city did the woman and John stay the longest?A.Paris.B.Rome.C.Vienna.第二节(共15小题;每小题1.5分,满分22.5分)听下面5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,并标在试卷的相应位置。

听每段对话或独白前,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6段材料,回答第6~8小题。

6. Who is the woman?A.The man’s girlfriend.B.Girlfriend of the man’s brother.C.The man’s wife.7. Where is the man’s brother now?A.In New Zealand.B.In England.C.In the United States.8. When did the man receive his brother’s email?st month.st weekend.st Wednesday.听第7段材料,回答第9~11小题。

高中数学必修五第一章《解三角形》单元测试卷及答案

高中数学必修五第一章《解三角形》单元测试卷及答案

高中数学必修五第一章《解三角形》单元测试卷及答案(2套)单元测试题一一、选择题(本大题共12个小题,每小题5分,共60分,每小题有4个选项,其中有且仅有一个是正确的,把正确的选项填在答题卡中) 1.在ABC △中,::1:2:3A B C =,则::a b c 等于( )A .1:2:3B .3:2:1C .2D .22.在△ABC 中,角A 、B 、C 所对的边分别为a 、b 、c ,且A >B ,则一定有( ) A .cos A >cos BB .sin A >sin BC .tan A >tan BD .sin A <sin B3.△ABC 的三个内角A 、B 、C 所对的边分别为a 、b 、c ,2sin sin cos a A B b A +,则ba =( )A .B .C D4.在△ABC 中,∠A =60°,a =,b =4.满足条件的△ABC ( ) A .无解B .有一解C .有两解D .不能确定5.在△ABC 中,角A 、B 、C 所对的边分别为a 、b 、c ,且222a b c =-, 则角B 的大小是( ) A .45°B .60°C .90°D .135°6.在△ABC 中,内角A 、B 、C 的对边分别是a 、b 、c ,若22a b -,sin C B =,则A =( ) A .30°B .60°C .120°D .150°7.在△ABC 中,∠A =60°,b =1,△ABC sin aA为( )A B C D .8.在△ABC 中,sin 2A ≤sin 2B +sin 2C -sin B sin C ,则A 的取值范围是( )A .0,6π⎛⎤ ⎥⎝⎦B .,6π⎡⎫π⎪⎢⎣⎭C .0,3π⎛⎤ ⎥⎝⎦D .,3π⎡⎫π⎪⎢⎣⎭9.在△ABC 中,已知B =45°,c =,b =A 的值是( ) A .15°B .75°C .105°D .75°或15°10.在锐角三角形ABC 中,b =1,c =2,则a 的取值范围是( )A .1<a <3B .1a <<C a <D .不确定11.在△ABC 中,内角A 、B 、C 的对边分别为a 、b 、c ,且2cos 22A b cc+=,则 △ABC 的形状为( ) A .直角三角形B .等腰直角三角形C .等腰或直角三角形D .等边三角形12.如图所示,在△ABC 中,已知∠A ∶∠B =1∶2,角C 的平分线CD 把三角形面积分为3∶2两部分,则cos A 等于( )A .13B .12C .34D .0二、填空题(本大题共4个小题,每空5分,共20分,把正确答案填在题中横线上) 13.等腰三角形的底边长为6,腰长为12,其外接圆的半径为________. 14.在△ABC 中,若a 2+b 2<c 2,且3sin C ,则∠C =________. 15.在△ABC 中,a =3,26b =B =2∠A ,则cos A =________.16.某人在C 点测得塔AB 在南偏西80°,仰角为45°,沿南偏东40°方向前进10 m 到O ,测得塔A 仰角为30°,则塔高为________.三、解答题(本大题共6个小题,共70分,解答应写出文字说明、证明过程或演算步骤) 17.(10分)在△ABC 中,角A 、B 、C 所对的边分别为a 、b 、c .已知()cos cos 3sin cos 0C A A B +=.(1)求角B 的大小;(2)若a +c =1,求b 的取值范围.18.(12分)在△ABC 中,角A 、B 、C 的对边分别为a 、b 、c .(1)若sin 2cos 6A A π⎛⎫+= ⎪⎝⎭,求A 的值;(2)若1cos 3A =,b =3c ,求sin C 的值.19.(12分)在△ABC 中,角A 、B 、C 对应的边分别是a 、b 、c ,已知cos2A -3cos(B +C )=1.(1)求角A 的大小;(2)若△ABC 的面积S =b =5,求sin B sin C 的值.20.(12分)在△ABC 中,内角A 、B 、C 的对边分别是a 、b 、c ,且222a b c +=. (1)求C ;(2)设cos cos A B =,()()2cos cos cos A B ααα++,求tan α的值.21.(12分)在△ABC 中,2C A π-=,1sin 3B =. (1)求sin A 的值;(2)设6AC =,求△ABC 的面积.22.(12分)如图,已知扇形AOB ,O 为顶点,圆心角AOB 等于60°,半径为2,在弧AB 上有一动点P ,过P 引平行于OB 的直线和OA 相交于点C ,设∠AOP =θ,求△POC 面积的最大值及此时θ的值.答 案一、选择题(本大题共12个小题,每小题5分,共60分,每小题有4个选项,其中有且仅有一个是正确的,把正确的选项填在答题卡中) 1.【答案】C 【解析】6A π=,3B π=,2C π=,132::sin :sin :sin 3222a b c A B C ===,故选C . 2.【答案】B【解析】∵A B >,∴a b >,由正弦定理,得sin sin A B >,故选B .3.【答案】D【解析】本小题考查内容为正弦定理的应用.∵2sin sin cos a A B b A +=,∴22sin sin sin cos A B B A A +=,sin B A =,∴b =,∴ba.故选D . 4.【答案】A【解析】4sin 60⨯︒=<a <b sin A ,∴△ABC 不存在. 故选A . 5.【答案】A【解析】∵222a b c =-,∴222a c b +-=,由余弦定理,得222cos 2a c b B ac +-===0°<B <180°,所以B =45°. 故选A . 6.【答案】A【解析】由sin C B =及正弦定理,得c =,∴2226a b b -=, 即a 2=7b 2.由余弦定理,2222222cos2b c a A bc +-===,又∵0°<A <180°,∴A =30°.故选A . 7.【答案】B【解析】由1sin 2bc A =c =4.由余弦定理得a 2=b 2+c 2-2bc cos A =13,故a =sin a A ==B . 8.【答案】C【解析】本题主要考查正余弦定理,∵sin 2A ≤sin 2B +sin 2C -sin B sin C , ∴由正弦定理得:a 2≤b 2+c 2-bc ,即b 2+c 2-a 2≥bc ,由余弦定理得:2221cos 222b c a bc A bc bc +-==≥=,∴03A π<≤,故选C .9.【答案】D 【解析】∵sin sin b cB C =,∴sin sin c B C b ==. ∵0°<C <180°.∴C =60°或120°,∴A =75°或15°.故选D . 10.【答案】C【解析】∵b <c ,△ABC 为锐角三角形,∴边c 与边a 所对的角的余弦值大于0,即b 2+a 2-c 2>0且b 2+c 2-a 2>0,∴22140140a a ⎧+->⎪⎨+->⎪⎩.∴3<a 2<5,∴35a <<. 故选C . 11.【答案】A【解析】由21cos cos 222A A b c c ++==,整理得cos bA c=.又222cos 2b c a A bc +-=, 联立以上两式整理得c 2=a 2+b 2,∴C =90°.故△ABC 为直角三角形.故选A . 12.【答案】C【解析】在△ABC 中,设∠ACD =∠BCD =β,∠CAB =α,由∠A ∶∠B =1∶2,得∠ABC =2α.∵∠A <∠B ,∴AC >BC ,∴S △ACD >S △BCD ,∴S △ACD ∶S △BCD =3∶2,∴1sin 3212sin 2AC DC BC DC ββ⋅⋅⋅=⋅⋅⋅,∴32AC BC =.由正弦定理得sin sin AC BC B A =,sin 2sin 2sin cos sin AC BC AC BCααααα=⇒=, ∴133cos 2224AC BC α==⨯=,即3cos 4A =.故选C .二、填空题(本大题共4个小题,每空5分,共20分,把正确答案填在题中横线上) 13.815【解析】设△ABC 中,AB =AC =12,BC =6,由余弦定理222222121267cos 2212128AB AC BC A AB AC +-+-===⋅⨯⨯.∵()0,A ∈π,∴15sin A =,∴外接圆半径8152sin BC r A == 14.【答案】23π【解析】∵a 2+b 2<c 2,∴a 2+b 2-c 2<0,即cos C <0.又3sin C ,∴23C π∠=. 15.6【解析】∵a =3,26b =,∠B =2∠A ,由正弦定理326sin sin 2A A=, ∴2sin cos 26sin 3A A A =,∴6cos 3A =. 16.【答案】10 m【解析】画出示意图,如图所示,CO =10,∠OCD =40°,∠BCD =80°,∠ACB =45°, ∠AOB =30°,AB ⊥平面BCO ,令AB =x ,则BC =x ,3BO x ,在△BCO 中,由余弦定理得)()223100210cos 8040xx x =+-⨯⨯︒+︒,整理得25500x x -=-,解得10x =,5x =-(舍去),故塔高为10 m .三、解答题(本大题共6个小题,共70分,解答应写出文字说明、证明过程或演算步骤) 17.【答案】(1)3B π=;(2)112b ≤<. 【解析】(1)由已知得()cos cos cos 3cos 0A B A B A B -++-=, 即有sin sin 3sin cos 0A B A B =. 因为sin A ≠0,所以sin 30B B =. 又cos B ≠0,所以tan 3B =.又0<B <π,所以3B π=. (2)由余弦定理,有b 2=a 2+c 2-2ac cos B . 因为a +c =1,1cos 2B =,有2211324b a ⎛⎫=-+ ⎪⎝⎭.又0<a <1,于是有2114b ≤<,即有112b ≤<. 18.【答案】(1)3A π=;(2)1sin 3C =. 【解析】(1)由题设知sin cos cos sin 2cos 66A A A ππ+=.从而sin 3A A ,所以cos A ≠0,tan A =.因为0<A <π,所以3A π=. (2)由1cos 3A =,b =3c 及a 2=b 2+c 2-2bc cos A ,得a 2=b 2-c 2, 故△ABC 是直角三角形,且2B π=.所以1sin cos 3C A ==. 19.【答案】(1)3A π=;(2)5sin sin 7B C =. 【解析】(1)由cos2A -3cos(B +C )=1,得2cos 2A +3cos A -2=0, 即(2cos A -1)(cos A +2)=0,解得1cos 2A =或cos A =-2(舍去). 因为0<A <π,所以3A π=.(2)由11sin sin 223S bc A bc π====bc =20,又b =5,知c =4.由余弦定理得a 2=b 2+c 2-2bc cos A =25+16-20=21,故a =. 又由正弦定理得222035sin sin sin sin sin 2147b c bc B C A A A a a a =⋅==⨯=.20.【答案】(1)34C π=;(2)tan α=1或tan α=4.【解析】(1)因为222a b c +=,由余弦定理有222cos 2a b c C ab +-===34C π=. (2)由题意得()()2sin sin cos cos sin sin cos cos cos A A B B ααααα--,因此()()tan sin cos tan sin cos A A B B αα--=,()2tan sin sin tan sin cos cos sin cos cos A B A B A B A B αα-++=,()2tan sin sin tan sin cos cos A B A B A B αα-++=因为34C π=,4A B π+=,所以()sin A B +=因为cos(A +B )=cos A cos B -sin A sin B ,即sin sin 52A B -=,解得sin sin 5210A B =-=.由①得tan 2α-5tan α+4=0,解得tan α=1或tan α=4. 21.【答案】(1)sin A ;(2)ABC S =△. 【解析】(1)由2C A π-=和A +B +C =π,得22A B π=-,04A π<<. ∴cos2A =sinB ,即2112sin 3A -=,∴sin A =.(2)由(1)得cos A sin sin BC AC A B =,∴sin 31sin 3AC ABC B===∵2C A π-=,∴2C A π=+,∴sin sin cos 2C A A π⎛⎫=+== ⎪⎝⎭,∴11sin 22ABC S AC BC C =⋅⋅==△. 22.【答案】当θ=30°时,S (θ). 【解析】∵CP ∥OB ,∴∠CPO =∠POB =60°-θ,∠OCP =120°. 在△OCP 中,由正弦定理,得sin sin OP CP OCP θ=∠,即2sin120sin CPθ=︒,∴CP θ.又()2sin 60sin120CO θ=︒-︒,∴()60OC θ=︒-.故△POC 的面积是()1sin1202S CP CO θ=⋅⋅︒()()160sin si 2n 60θθθθ=︒-︒-()1sin sin 21cos 2602θθθθ⎫⎤=-︒=-⎪-⎥⎪⎝⎦⎭,()0,60θ∈︒︒, ∴当θ=30°时,S (θ)单元测试题二一、选择题(本大题共12个小题,每小题5分,共60分,在每小题给出的四个选项中只有一个是符合题目要求的)1.在ABC △中,若90C =︒,6a =,30B =︒,则c b -等于( )A .1B .1-C .D .-2.在ABC △中,3AB =,2AC =,BC =BA ·AC 等于( )A .32-B .23-C .23D .323.在△ABC 中,已知a =,b =A =30°,则c 等于( )A .BC .D .以上都不对4.根据下列情况,判断三角形解的情况,其中正确的是( ) A .a =8,b =16,A =30°,有两解 B .b =18,c =20,B =60°,有一解 C .a =5,c =2,A =90°,无解 D .a =30,b =25,A =150°,有一解5.△ABC 的两边长分别为2,3,其夹角的余弦值为13,则其外接圆的半径为( )A B C D .6.在△ABC 中,2cos 22A b cc+⋅=(a 、b 、c 分别为角A 、B 、C 的对边),则△ABC 的形状为( ) A .直角三角形 B .等腰三角形或直角三角形 C .等腰直角三角形D .正三角形7.已知△ABC 中,A 、B 、C 的对边分别为a 、b 、c .若a c =A =75°,则b 等于( )A .2B -C .4-D .4+8.在△ABC 中,已知b 2-bc -2c 2=0,a =7cos 8A =,则△ABC 的面积S 为( )A B C D .9.在△ABC 中,AB =7,AC =6,M 是BC 的中点,AM =4,则BC 等于( )A B C D10.若sin cos cos A B Ca b c==,则△ABC 是( ) A .等边三角形 B .有一内角是30°的直角三角形 C .等腰直角三角形D .有一内角是30°的等腰三角形11.在△ABC 中,角A 、B 、C 的对边分别为a 、b 、c ,若()222tan 3a c b B ac +-=,则角B 的值为( ) A .6π B .3π C .6π或56π D .3π或23π12.△ABC 中,3A π=,BC =3,则△ABC 的周长为( ) A .43sin 33B π⎛⎫++ ⎪⎝⎭B .43sin 36B π⎛⎫++ ⎪⎝⎭C .6sin 33B π⎛⎫++ ⎪⎝⎭D .6sin 36B π⎛⎫++ ⎪⎝⎭二、填空题(本大题共4个小题,每小题5分,共20分,把正确答案填在题中横线上) 13.在△ABC 中,2sin sin sin a b cA B C--=________. 14.在△ABC 中,角A 、B 、C 的对边分别为a 、b 、c ,若2223a c b ac +-=, 则角B 的值为________.15.已知a ,b ,c 分别是△ABC 的三个内角A ,B ,C 所对的边.若a =1,3b =, A +C =2B ,则sin C =________.16.钝角三角形的三边为a ,a +1,a +2,其最大角不超过120°,则a 的取值范围是________.三、解答题(本大题共6个大题,共70分,解答应写出文字说明,证明过程或演算步骤) 17.(10分)如图所示,我艇在A 处发现一走私船在方位角45°且距离为12海里的B 处正以每小时10海里的速度向方位角105°的方向逃窜,我艇立即以14海里/小时的速度追击,求我艇追上走私船所需要的时间.18.(12分)在△ABC 中,角A 、B 、C 所对的边长分别是a 、b 、c ,且4cos 5A =. (1)求2sin cos22B CA ++的值; (2)若b =2,△ABC 的面积S =3,求a .19.(12分)如图所示,△ACD 是等边三角形,△ABC 是等腰直角三角形,∠ACB =90°,BD 交AC 于E ,AB =2. (1)求cos ∠CBE 的值; (2)求AE .20.(12分)已知△ABC 的内角A ,B ,C 所对的边分别为a ,b ,c ,且a =2,3cos 5B =. (1)若b =4,求sin A 的值;(2)若△ABC 的面积S △ABC =4,求b ,c 的值.21.(12分)在△ABC 中,a ,b ,c 分别为内角A ,B ,C 的对边,且2a sin A =(2b +c )sin B +(2c +b )sin C . (1)求A 的大小;(2)若sin B +sin C =1,试判断△ABC 的形状.22.(12分)已知△ABC 的角A 、B 、C 所对的边分别是a 、b 、c ,设向量(),a b m =, ()sin ,sin B A =n ,()2,2b a --p =.(1)若m ∥n ,求证:△ABC 为等腰三角形; (2)若m ⊥p ,边长c =2,角3C π=,求△ABC 的面积.答 案一、选择题(本大题共12个小题,每小题5分,共60分,在每小题给出的四个选项中只有一个是符合题目要求的) 1.【答案】C【解析】tan 30ba=︒,tan30b a =︒=2c b ==,c b -= 故选C . 2.【答案】A【解析】由余弦定理得22294101cos 2124AB AC BC A AB AC +-+-===⋅.∴13cos 3242AB AC AB AC A ⋅=⋅⋅=⨯⨯=.∴32BA AC AB AC ⋅=-⋅=-.故选A .3.【答案】C【解析】∵a 2=b 2+c 2-2bc cos A ,∴2515c c =+-. 化简得:2100c -+=,即(0c c -=,∴c =c = 故选C . 4.【答案】D 【解析】A 中,因sin sin a b A B =,所以16sin30sin 18B ⨯︒==,∴90B =︒,即只有一解;B 中,20sin 60sin 18C ︒==c b >,∴C B >,故有两解; C 中,∵A =90°,a =5,c =2,∴b = 故A 、B 、C 都不正确.故选D . 5.【答案】C【解析】设另一条边为x ,则2221232233x =+-⨯⨯⨯,∴29x =,∴3x =.设1cos 3θ=,则sin θ=.∴32sinR θ==,R =C . 6.【答案】A【解析】由2cos cos 22A b c b A c c+⋅=⇒⋅=,又222cos 2b c a A bc +-⋅=, ∴b 2+c 2-a 2=2b 2⇒a 2+b 2=c 2,故选A . 7.【答案】A【解析】()sin sin 75sin 3045A =︒=︒+︒, 由a =c 知,C =75°,B =30°.1sin 2B =.由正弦定理:4sin sin b aB A===.∴b =4sin B =2.故选A .8.【答案】A【解析】由b 2-bc -2c 2=0可得(b +c )(b -2c )=0. ∴b =2c ,在△ABC 中,a 2=b 2+c 2-2bc cos A ,即22276448c c c =+-⋅.∴c =2,从而b =4.∴11sin 4222ABCS bc A ==⨯⨯△A . 9.【答案】B【解析】设BC =a ,则2aBM MC ==. 在△ABM 中,AB 2=BM 2+AM 2-2BM ·AM ·cos ∠AMB ,即22217424cos 42aa AMB =+-⨯⨯⋅∠ ①在△ACM 中,AC 2=AM 2+CM 2-2AM ·CM ·cos ∠AMC即22216424cos 42aa AMB =++⨯⨯⋅∠ ②①+②得:22222176442a +=++,∴a =B .10.【答案】C 【解析】∵sin cos A Ba b=,∴a cos B =b sin A , ∴2R sin A cos B =2R sin B sin A,2R sin A ≠0.∴cos B =sin B ,∴B =45°.同理C =45°,故A =90°.故C 选项正确. 11.【答案】D【解析】∵()222tan a c b B +-,∴222tan 2a c b B ac +-⋅=,即cos tan sin B B B ⋅=0<B <π,∴角B 的值为3π或23π.故选D . 12.【答案】D 【解析】3A π=,BC =3,设周长为x ,由正弦定理知2sin sin sin BC AC ABR A B C ===, 由合分比定理知sin sin sin sin BC AB BC ACA ABC ++=++,=,∴()sin sin B A B x ⎤+++=⎥⎦,即3sin sin 3sin sin cos cos sin 333x B B B B B π⎤ππ⎛⎫⎫=+++=+++ ⎪⎪⎥⎝⎭⎭⎦133sin sin 3sin 22B B B B B ⎫⎫=+++=++⎪⎪⎪⎪⎭⎭136cos 36sin 26B B B ⎫π⎛⎫=++=++⎪ ⎪⎪⎝⎭⎝⎭.故选D .二、填空题(本大题共4个小题,每小题5分,共20分,把正确答案填在题中横线上) 13.【答案】0 14.【答案】6π【解析】∵222a cb +-=,∴222cos 2a c b B ac +-==6B π=. 15.【答案】1【解析】在△ABC 中,A +B +C =π,A +C =2B .∴3B π=. 由正弦定理知,sin 1sin 2a B A b ==.又a <b .∴6A π=,2C π=.∴sin 1C =. 16.【答案】332a ≤< 【解析】由()()()()()()22222212120121212a a a a a a a a a a a ⎧⎪++>+⎪⎪++-+<⎨⎪++-+⎪≥-⎪+⎩,解得332a ≤<.三、解答题(本大题共6个大题,共70分,解答应写出文字说明,证明过程或演算步骤) 17.【答案】2小时.【解析】设我艇追上走私船所需时间为t 小时, 则BC =10t ,AC =14t ,在△ABC 中, 由∠ABC =180°+45°-105°=120°,根据余弦定理知:(14t )2=(10t )2+122-2·12·10t cos 120°,∴2t =. 答:我艇追上走私船所需的时间为2小时. 18.【答案】(1)5950;(2)a = 【解析】(1)()221cos 1cos 59sin cos2cos22cos 122250B C B C A A A A -++++=+=+-=. (2)∵4cos 5A =,∴3sin 5A =.由1sin 2ABC S bc A =△,得133225c =⨯⨯,解得c =5.由余弦定理a 2=b 2+c 2-2bc cos A ,可得24425225135a =+-⨯⨯⨯=,∴a = 19.【答案】(1;(2)AE=.【解析】(1)∵∠BCD =90°+60°=150°,CB =AC =CD , ∴∠CBE =15°.∴()cos cos 4530CBE ∠=︒-︒= (2)在△ABE 中,AB =2,由正弦定理得sin sin AE ABABE AEB=∠∠, 即()()2sin 4515sin 9015AE =︒-︒︒+︒,故122sin 30cos15AE ⨯︒===︒20.【答案】(1)2sin 5A =;(2)b =5c =. 【解析】(1)∵3cos 05B =>,且0<B <π,∴4sin 5B ==. 由正弦定理得sin sin a bA B=,42sin 25sin 45a B Ab ⨯===. (2)∵1sin 42ABC S ac B ==△,∴142425c ⨯⨯⨯=,∴5c =.由余弦定理得2222232cos 25225175b a c ac B =+-=+-⨯⨯⨯=,∴b =21.【答案】(1)120A =︒;(2)△ABC 为等腰钝角三角形. 【解析】(1)由已知,根据正弦定理得2a 2=(2b +c )b +(2c +b )c , 即a 2=b 2+c 2+bc .由余弦定理得a 2=b 2+c 2-2bc cos A ,故1cos 2A =-,120A =︒.(2)方法一 由(1)得sin 2A =sin 2B +sin 2C +sin B sin C , 又A =120°,∴223sin sin sin sin 4B C B C ++=, ∵sin B +sin C =1,∴sin C =1-sin B . ∴()()223sin 1sin sin 1sin 4B B B B +-+-=, 即21sin sin 04B B -+=.解得1sin 2B =.故1sin 2C =.∴B =C =30°. 所以,△ABC 是等腰的钝角三角形.方法二 由(1)A =120°,∴B +C =60°,则C =60°-B , ∴sin B +sin C =sin B +sin(60°-B) 11sin sin sin 22B B B B B =-==sin(B +60°)=1, ∴B =30°,C =30°.∴△ABC 是等腰的钝角三角形.22.【答案】(1)见解析;(2)ABC S =△ 【解析】(1)证明 ∵m ∥n ,∴a sin A =b sin B ,即22a ba b R R⋅=⋅, 其中R 是△ABC 外接圆半径,∴a =b .∴△ABC 为等腰三角形. (2)解 由题意知m ·p =0,即a (b -2)+b (a -2)=0.∴a +b =ab .由余弦定理可知,4=a 2+b 2-ab =(a +b )2-3ab , 即(ab )2-3ab -4=0.∴ab =4(舍去ab =-1),∴11sin 4sin 223ABC S ab C π==⨯⨯=△.。

英语必修五unit1-2单元测试卷

英语必修五unit1-2单元测试卷

英语必修五Unit 1---Unit2 单元检测题一、单项填空(共20小题;每小题1分,满分20分)1 He suggests we ____ to the cinema at once, otherwise we ____ late.A must go; areB go ; will beC will go ; will beD would go ; are2 The writer ___ his writing so that he forgot to have his lunch.A absorbedB was absorbed intoC absorbed intoD was absorbed in3 The president ____ the new economic policy.A announcedB toldC informedD promised4 _____ the injuries to his face, he broke both legs.A In addition toB ExceptC ButD Except for5. Only in this way ___ to make progress with your English.A hopedB wishedC likedD expected6. Who is ____ the patient? Maybe his sister.A taking careB looking forC joining inD attending on7. I had no idea when and where ________. .A. it happenedB. does it happenC. it had happenedD. had it happened8. Did you remember to give Mary the money you owed to her?--- Yes, I gave it to her ____ I saw her.A whileB the momentC suddenlyD once9. The ___ look on his face showed that he hadn’t expected it .A astonishedB astonishingC being astonishedD having astonished10 Do you still remember the chicken farm ___ we visited three months ago?A whereB whenC thatD what11 I feel it is your husband who ____ for the spoiled child .A is to blameB is going to blameC is to be blamedD should blame12. It remains______ whether the medicine has side effect.A.seeing B. to see C. seen D. to be seen13. The boy found______ a bank was dismissed.A. to robB. to have robbedC. robbedD. robbing14. I have a lot to say in relation ______ _the affair.A. withB. byC. toD. in15. After ten hours’ operation, the doctors managed to _____the one-year-old twin at the head.A. isolateB. separateC. divideD. remove16. -We had_____ really cold February this year-I can’t remember______ ____ spring when it snowed in C hangzhou .A. a;不填B. 不填;theC. the; aD. a; a17. ---Where is Jack?---Well, he ______ you______ here, or else he would be here right now.A. doesn’t know, areB. hadn’t known, wereC. didn’t know, wereD. hasn’t known, are18. He abused at his classmates;______ ___he refused to apologize.A. making things worseB. what is worseC. to begin withD. worse still19. It is very important for us parents to be ______ ___in educating children.A. commonB. similarC. consistentD. available20. Whoever caught ______ __the rule will be punished.A. to breakB. breaksC. brokeD. breaking二、完形填空(共20小题;每小题2分,满分40分)阅读下面短文,从短文后各题所给的四个选项(ABC和D)中,选出可以填入空白处的最佳选项。

新课标英语必修5第一单元测试题高攀峰

新课标英语必修5第一单元测试题高攀峰

新课标高二英语必修5第一单元测试题主讲人:高攀峰单项填空1 This medicine cured her _________ her breast cancerA. forB. ofC. withD. to2 This medicine treated her _________ her breast cancerA. forB. ofC. withD. to3.The driver was not to blame _______ the accident.A. forB. ofC. withD. to4.Eating too much fat can ________ heart disease and cause high blood pressureA . expose to B. attend to C. devote to D. pay attention to5. The way he suggests to us doesn’t make______A. differenceB. opinionsC. useD. sense6. She felt rather _______that she should drive the car at such a___________ speed.A. frightening, frighteningB. frightened, frightenedC. frightening, frightenedD. frightened, frightening7. Cleaning women in big cities get _____ by the hour. A. pay B. payingC. paidD. to pay8 .She came to a conclusion that he had forgotten what he had promised.A .a B. the C. / D. one9 ___________ to sunlight for too long will do harm to one’s skinA. ExposedB. Being exposedC. ExposingD. To expose10._______ to sun ,the rain and wind for a long time , the plant will grow quickly.A. ExposedB. Being exposedC. ExposingD. To expose11. If only he __________ so fast !A. hadn’t drivenB. doesn’t driveC. didn’t driveD. hasn’t driven12.Only when I left my parents for Weinan ___________ how much I loved themA. I realizedB. I had realizedC. had I realizedD. did I realize13.All the afternoon he worked with the door _________A. was lockedB. lockingC. lockedD. to lock14.With the winter _______ around , it’s time to buy warm clothes.A. comingB. comesC. cameD. is coming15.In spite of his old age ,my grandpa still has great ________ for social activitiesA. enthusiasmB. feelingC. actionD. thought改错题:Dear Lily,I got your letter and pleased to hear about your job interview at a grocery store. I know you want to get a job at the TV station, and you’ve been looking for several week now and haven’t found some thing. The job at the grocery store doesn’t sound badly. If I am you, I’d take it. If you worked there for some time, you could earn some money. Its your decision, of course, but I advise you to take it. Let me to know what you decided to do. By the way, after you get the job you can think about get a bikelater.5分钟完成O. Henry was a pen name used by an American writer of short stories. His real name was William Sydney Porter. He was born in North Carolina in 1862. As a young boy he lived an exciting life. He did not go to school for very long, but he managed to teach himself everything he needed to know. When he was about 20 years old, O. Henry went to Texas, where he tried different jobs. He first worked on a newspaper, and then had a job in a bank, when some money went missing from the bank O. Henry was believed to have stolen it. Because of that, he was sent to prison. During the three years in prison, he learned to write short stories. After he got out of prison, he went to New York and continued writing. He wrote mostly about New York and the life of the poor there. People liked his stories, because simple as the tales were, they would finish with a sudden change at the end, to the reader’s surprise.1. In which order did O. Henry do the following things?a. Lived in New York.b. Worked in a bank.c. Travelled to Texas.d. Was put in prison.e. Had a newspaper Job.f. Learned to write stories.A. e. c. f. b. d. aB. c. e. b. d. f. aC. e. b. d. c. a. f.D. c. b. e. d. a f.2. People enjoyed reading O. Henry’s stories beca useA. they had surprise endingsB. they were easy to understandC. they showed his love for the poorD. they were about New York City3. O. Henry went to prison because .A. people thought he had stolen money from the newspaperB. he broke the law by not using his own nameC. he wanted to write stories about prisonersD. people thought he had taken money that was not his4. What do we know about O. Henry before he began writing?A. He was well-educated.B. He was not serious about his work.C. He was devoted to the poor.D. He was very good at learning.5. Where did O. Henry get most material for his short stories?A. His life inside the prison.B. The newspaper articles he wrote.C. The city and people of New York.D. His exciting early life as a boy.5分钟完成One day a few years ago a very funny thing happened to a neighbour of mine. He is a teacher at one of London’s big medical schools, He had finished his teaching for the summer term and was at the airport on his way to Russia to give a lecture.He had put a few clothes and his lecture notes in his shoulder bag, but he had put Rupert, the skeleton (人体骨骼) to be used in his lecture, in a large brown suitcase (箱子). At the airport desk, he suddenly thought that he had forgotten to buy a newspaper. He left his suitcase near the desk and went over to the shop.When he got back he discovered that someone had taken his suitcase by mistake. He often wonders what they said when they got home and found Rupert.1. Who wrote the story?A. Rupert’s teac her.B. The neighbour’s teacher.C. A medical school teacher.D. The teacher’s neighbour.2. Why did the teacher put a skeleton in his suitcase?A. He needed it for the summer term in London.B. He needed it for the lecture he was going to give.C. He wanted to take it to Russia for medical research.D. He wanted to take it home as he had finished his teaching.3. What happened at the airport?A. The skeleton went missing .B. The skeleton was stolen .C. The teacher forgot his suitcase.D. The teacher took the wrong suitcase .4. Which of the following best tells the teacher’s feeling about the incident?A. He is very angry .B. He thinks it rather funny .C. He feels helpless without Rupert.D. He feels good without Rupert .5. Which of the following might have happened afterwards?A. The teacher got back the suitcase but not Rupert.B. The teacher got back neither the suitcase nor Rupert.C. The teacher got back Rupert but not the suitcase.D. The teacher got back both the suitcase and Rupert.。

北师大版必修5高二数学第一章测试练习题及答案

北师大版必修5高二数学第一章测试练习题及答案

高二数学必修五第一单元检测卷(数列)一、选择题:本大题共有12小题,每小题5分,共60分.在每小题给出的四个选项中,有且只有一项是符合题目要求的.1,的一个通项公式是A. n a =B. n aC. n a =D. n a =2.已知数列{}n a 的首项11a =,且()1212n n a a n -=+≥,则5a 为 A .7 B .15 C.30 D .31 3.下列各组数能组成等比数列的是A. 111,,369B. lg3,lg9,lg 27C. 6,8,10D.3,-4. 等差数列{}n a 的前m 项的和是30,前2m 项的和是100,则它的前3m 项的和是A .130B .170C .210D .2605.若{}n a 是等比数列,前n 项和21n n S =-,则2222123n a a a a ++++=A.2(21)n -B.21(21)3n - C.41n- D.1(41)3n-6.各项为正数的等比数列{}n a ,478a a ⋅=,则1012222log log log a a a+++=A .5B .10C .15D .207.已知等差数列{a n }的公差d ≠0,若a 5、a 9、a 15成等比数列,那么公比为 (A)(B)(C)(D)8.在等差数列{}n a 和{}n b 中,125a =,175b =,100100100a b +=,则数列{}n n a b +的前100项和为A. 0B. 100C. 1000D. 10000 9.已知等比数列{}n a 的通项公式为123n n a -=⨯,则由此数列的偶数项所组成的新数列的前n 项和n S =A.31n- B.3(31)n- C.914n - D.3(91)4n -10.等比数列{}n a 中,991a a 、为方程016102=+-x x 的两根,则805020a a a ⋅⋅ 的值为A .32B .64C .256D .±64 11.在等差数列{}n a 中,若4681012120a a a a a ++++=,则101123a a -的值为 A. 6 B. 8 C. 10 D. 1612. 设由正数组成的等比数列,公比q=2,且3030212=a a a ……·,则30963a a a a ……··等于 A .102 B .202 C .162 D .152二、填空题:共6小题,每小题5分,共30分.将答案填在题中的横线上.13.等差数列的前4项和为40,最后4项的和为80,所有各项的和为720,则这个数列一共有 项.14.若{a n }是等差数列,a 3,a 10是方程x 2-3x-5=0的两根,则a 5+a 8= .15.已知{}n a 是等比数列,n a >0,又知2a 4a +23a 5a +4a 6a =25,那么35a a +=__________. 16. 在等差数列{}n a 中,14101619100a a a a a ++++=,则161913a a a -+的值是________三、解答题:本大题共4小题,共60分.解答应写出文字说明,证明过程或演算步骤.17(10分).已知四个数,前三个数成等比数列,和为19,后三个数成等差数列,和为12,求此四个数.18(12分).已知数列{}n a 中,13a =,1021a =,通项n a 是项数n 的一次函数, ① 求{}n a 的通项公式,并求2009a ;② 若{}n b 是由2468,,,,,a a a a 组成,试归纳{}n b 的一个通项公式19(12分).已知{}n a 满足13a =,121n n a a +=+, (1)求证:{}1n a +是等比数列; (2)求这个数列的通项公式n a .20(12分)已知数列{n a }的前n 项和是n n s n 2205232+-=, (1) 求数列的通项公式n a ; (2) 求数列{|n a |}的前n 项和。

高考英语一轮复习 Module 6 Animals in Danger单元综合测试 外研版必修5(1)

高考英语一轮复习 Module 6 Animals in Danger单元综合测试 外研版必修5(1)

2015届高三英语一轮复习:Module 6 Animals in Danger Ⅰ.语法填空,单句训练1.The incomes of male professional went up by almost 80%. ________,part­time women workers saw their earnings fall.答案:Meanwhile meanwhile意为“同时;在此期间”,符合句意。

2.(2014届安徽省级示范高中名校高三联考改编)To see a young couple loving each other is ________; but to see an old couple loving each other is the best sight of all.答案:no wonder 考查名词词组辨析。

句意:看见一对年轻人相亲相爱不足为奇,但看到一对老夫妇相亲相爱,却是人间最美丽的景致。

no wonder “不足为奇”。

3.I'd like to ________ a seat on the next plane to Atlanta.答案:reserve reserve意为“保留;预订”,符合句意。

4.Because of his strange clothes, he immediately became the ________ of attention when he entered the office.答案:focus focus意为“焦点”,符合题意。

5.(2014届四川自贡高三一模改编)As you know, it is my duty to ________ my younger sisters from being hurt when they are in danger.答案:protect prevent/stop...from...意为“防止、阻止……做……”,符合句意。

2023年高中英语必修五单元测试题及答案整理

2023年高中英语必修五单元测试题及答案整理

2023年高中英语必修五单元测试题及答案整理高中英语必修五单元测试题及答案在学习、工作中,我们常常接触到试题,借助试题可以更好地考核参考者的学问才能。

什么样的试题才能有效关心到我们呢?下面是我收集整理的高中英语必修五单元测试题及答案,欢迎阅读,盼望大家能够喜爱。

第一部分:听力:(略)其次部分:英语学问运用(共两节,满分45分)第一节:单项选择:(共15小题;每小题1分,满分15分)从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该题涂黑。

21. ____________ will we give in to the difficulties. Which of the answers can’t be chosen?A. On no conditionB. At no timeC. In no timeD. Never22. Not for a moment ________ the truth of your story.A. he have doubtedB. he doubtsC. did he doubtD. he did doubt23. Next door to ours _________, who has just returned form abroad.A. where lives an old manB. where does an old man liveC. lives an old manD. does an old man live24. Not only ________ polluted but __________ crowded.A. did I feelB. I feltC. I had feltD. had I felt25. I finally got the job I dreamed about. Never in all life ________ so happy.A. usefulB. valueC. importantD. worth26. Not only __________ interested in football but _________ beginning to show an interest in it.A. the teacher himself is , all his students areB. the teacher himself is, are all his studentsC. is the teacher himself, are all his studentsD. is the teacher himself, all his students are27. We are ________ by doctors to eat more natural food and take plenty of physical exercises.A. suggestedB. warned ofC. informedD. advised28. As you know, it is my duty to ________ my younger sisters frombeing hurt when they are in danger.A. preventB. saveC. stopD. protect29. This book is said to be a special one which ________ many events not found in other history books.A. writesB. coversC. printsD. reads30. Children need many things, _______, they need love.A. after allB. first of allC. last of allD. at last31.I have searched ________ for the book but couldn’t find it.A. thoroughlyB. deeplyC. at easeD. comfrotably32. ---You _______ part in the party in time.---Sorry I was delayed by the accident.A. are supposed to takeB. have supposed toC. are supposed to have takeD. supposed to take33. ---Would you mind if I opened the door?--- ________________.A. Yes, go aheadB. No, go aheadC. Yes, pleaseD. Never mind34. A good teacher must _________ to his students how important a proper learning method is.A. get through B, get across C. get away D. get over35. Coral is not a plant but a variety of animal life _________ and bright colors.A. in different shapesB. in a different shapeC. of different shapeD. of a different shape其次节:完形填空(共20小题;每小题l.5分,满分30分)阅读下面短文,把握其大意,然后从36-55各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

人教版高中英语必修1 unit 5单元测试卷+规范训练1+规范训练2】

人教版高中英语必修1 unit 5单元测试卷+规范训练1+规范训练2】

Unit 5Nelson Mandela—a modern hero 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。

第Ⅰ卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5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。

1.What was the man doing?A.Buying clothes.B.Selling clothes.C.Having a suit made.2.What will the woman do this evening?A.Meet her mother at the airport.B.Say goodbye to her mother at the airport.C.Fly to another city together with her mother.3.How did the man feel about the movie?A.It was excellent.B.It wasn't good.C.It was instructive.4.Why does the woman like Beckham better?A.Because he plays football better.B.Because he is an Englishman.C.Because he is more fashionable.5.What can we learn from the conversation?A.The man went to the meeting place by taxi.B.The man went to the meeting place by bus.C.Susan went to the meeting place by bus.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。

(必修课)苏教版数学五年级下册第1单元测试题(含答案)

(必修课)苏教版数学五年级下册第1单元测试题(含答案)

(必修课)苏教版数学五年级下册第1单元测试题(含答案)姓名:__________ 班级:__________考号:__________一、单选题(共10题;共20分)1.3x=910x=()A. x=2B. x=3C. x=6D. x=3102.下列叙述正确的是()。

A. 把8克盐放入100克水中,盐水含盐8%B. 含有x的式子叫方程C. 真分数的倒数都大于1D. 甲比乙多20%,乙就比甲少20%3.在下面的式子里,()是方程.A. 5x+4B. 3x﹣5<7C. 34x﹣2=64.一块长方形土地,周长是100米,长是宽的2倍,宽是多少米?解:设宽是x米,正确的方程是()。

A. 2x+x=100B. 2x+x=100÷2C. 2x-x=100÷25.下面不是方程的是()。

A. 5a+1=13B. 1.5x+7C. 2.1x+x=6.6D. 6x+7=4x+106.如果x=y,根据等式的基本性质,经过变化后下面的()是错误的。

A. x÷b=y÷6(b≠0)B. x+y=y+yC. x×3×5=15yD. x-y=y-4+37.下列式子是方程的是()。

A. 2a÷5=12B. 2a÷5>12C. 2a÷5D. 2.4×5=128.一块试验田今年水稻的产量是240千克,比去年增长15。

去年产水稻多少千克?设去年水稻的产量为x 千克,列式正确的是( )。

A. 240× (1+15) B. 240× (1−15) C. (1+15)x=240 D. (1−15)x=2409.一次校友聚会有50人参加,在参加聚会的同学中,每个女生认识的男生人数各不相同,而且恰好构成一串连续的自然数,最多的全认识,最少的也认识15人,那么这次聚会有()个女生参加。

A. 17B. 18C. 1910.桌面上有10元、5元、1元的纸币12张,共72元.三种纸币张数的比为()A. 4:6:2B. 6:4:2C. 6:2:4D. 2:6:4二、填空题(共8题;共11分)11.解方程4 5−x=27x=________12.下面的式子________是方程,________不是方程.A.21-5=16 B.9x=0C.x÷32=2 D.3x-2x=18÷513.解方程.3 5x=2526x=________14.解方程.38x+42x=520x=________15.找等量关系列方程,解应用题:小丁丁买了一本笔记本和一支圆珠笔,笔记本的售价是圆珠笔的2倍,小丁丁一共付了4.5元,圆珠笔的售价为________元?笔记本的售价为________元?16.看图列方程,并求方程的解________=55x=________17.一个数添上百分号,这个数就减少了19.8,这个数是(________ )。

人教版高中英语必修五 Unit1 Great scientists 单元测试卷(一) (含答案)

人教版高中英语必修五 Unit1 Great scientists 单元测试卷(一) (含答案)

2018-2019学年高二上学期训练卷 必修五 Unit1 Great scientists 英 语 (一) 注意事项: 1.答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。

2.选择题的作答:每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,写在试题卷、草稿纸和答题卡上的非答题区域均无效。

3.非选择题的作答:用签字笔直接答在答题卡上对应的答题区域内。

写在试题卷、草稿纸和答题卡上的非答题区域均无效。

4.考试结束后,请将本试题卷和答题卡一并上交。

一、单句语法填空 1.The farmers in this area had a good harvest last year thanks to the ________ (science)farming.2.Who is responsible for the ________ (operate) of such vehicles is not clear among car makers, consumers and lawyers.3.Absorbed ________ painting, John didn't notice evening approaching.4.Our appetite for new products also contributes________ the problem.5.That mixture, according to Bernard, sets the elevator ride ________ from just about everyother situation we find ourselves in as we go about our lives.6.It may not be a great suggestion.But before a better one is put ________, we'll make do with it.7.See, your computer has broken down again !It doesn't make sense ________ buy thecheapest brand of computer just to save a few dollars.8.The term Nigger Jim, for which the novel is often________ (severe) criticized, never appears in it. 9.The Intelligent Transport team at Newcastle University have turned an electric car into a mobile laboratory named “DriveLAB” in order to understand the ________ (challenge) faced by older drivers and to discover where the key stress points are. 10.Only when Lily walked into the office ________ she realize that she had left the contract at home. 二、单句改错 1.Lots of people find it hard to get up in the morning and put a blame on the alarm clock. _______________________________________________________________________ 2.I always have so many things to attend when I come back to the company after a trip abroad. _______________________________________________________________________ 3.Absorbing in the book she was reading, Mary didn't notice me approaching. _______________________________________________________________________ 4.I had an early start at the age of nine with a role in a 1990s TV series, but it wasn't until I finished film studies that I pursued my career as an actress.Like those early days for Dad ,I faced lots of rejection. _______________________________________________________________________ 5.He was struck by the beauty for the first time he visited Guilin. _______________________________________________________________________ 6.The teacher cured him his bad habits and he made great progress in English. _______________________________________________________________________ 7.Young people may risk going deaf if they are exposed very loud music every day. _______________________________________________________________________ 8.In the company, pay increases are linked at performance. _______________________________________________________________________ 此卷只装订不密封班级姓名准考证号考场号座位号9.Before getting into the car, I thought I had learned the instructor's orders, but once I started the car, my mind goes blank._______________________________________________________________________ 10.There is no sense in force yourself to get what you don't want._______________________________________________________________________ 三、完形填空“Mom, you're always on the computer!” Laure complained.“No, I'm not,” I __1__.“Every day I come home from school you're working on the computer.”“Well, at leas t I'm here __2__ you!”My daughter was right.Day after day, in my home office, I would stare into space as my __3__ typed out the thoughts of a speaker or research completed for an article.It seemed that my work as a writer and speaker __4__ my fingers to the keyboard and my mind to valuable ideas.What Laure did not __5__ was that during her day away, I'd also be doing a lot of housework.It was only around three in the afternoon that I'd __6__ seat myself at my desk for a few __7__ moments of deep thought.Then she'd come from school.I was __8__ of myself on being available to my children.After all, I am a speaker on child behavior and parenting.But Laure's observation __9__ my heart.In her eyes, I must have been a mom who was __10__ but unapproachable.I wouldn't make such an image (形象) before her.My relationship with my children is more __11__ than any other work.“Laure,” I called, “come here a minute.”She wandered to my doorway.I had decided to have her __12__ me when I was too devoted to work.I wanted her to have the __13__ to let me know when she thought I was cold.After I explained my __14__ and the fact that I chose home office to be accessible to her and her sister, I offered Laure the following __15__.“Whenever you feel I'm ignoring you or you need my __16__,I want you to __17__ me,” I said.“Just come up and give me a little hug.That'll be our signal that you __18__ me.”Years later we still have that __19__ sign.I've become much more sensitive to my daughters' comings and goings.__20__ she always gives me a little hug to remind me of the real reason why I work at home.1.A.thought B.refused C.defended D.agreed 2.A.for B.over C.against D.after3.A.feet B.hands C.eyes D.ears4.A.connected B.turned C.gave D.added5.A.admit B.realize C.believe D.recognize 6.A.luckily B.gradually C.instantly D.finally 7.A.anxious B.precious C.busy D.rare8.A.proud B.ashamed C.afraid D.scared9.A.filled B.broke C.touched D.mended 10.A.suitable B.available C.acceptable D.reasonable 11.A.important B.funny C.obvious D.wonderful 12.A.warn B.persuade C.encourage D.remind 13.A.patience B.time C.power D.honor 14.A.pattern B.dream C.schedule D.choice 15.A.promise B.chance C.answer D.truth16.A.help B.attention C.decision D.advice 17.A.hug B.shake C.kiss D.kick18.A.miss B.hate C.need D.scold 19.A.unknown B.unexpected C.unfinished D.unspoken20.A.And B.But C.Or D.Yet四、语法填空Observers say Americans want more choices and fresh food when 1.________ (choose)where and what to eat.This trend is one reason why the fast food restaurant McDonald's has struggled financially.McDonald's is one of the best-known 2.________ (restaurant) in the U.S.and even around the world, 3.________ these days the company leaders are seeing numbers they probably do not like.In the last quarter of last year, McDonald's income dropped by about $300 million.The January earnings report brought more bad news.Worldwide sales dropped for the 4.________ (eight) month in a row and even more than expected.McDonald's is 5.________ (work) hard to get their customers back.In January, the company ran an advertisement during the Super Bowl.The football game is the most watched TV event every year in the U.S.McDonald's has wanted 6.________ (reach) those viewers.Shake Shack is 7.________ new kind of restaurant becoming popular in the U.S.The restaurants are not “fast food”.They are known a s “fast casual”.When McDonald's is struggling to get their customers back, Shake Shack is doing well 8.________ (financial).The New York-based burger chain had a very 9.________ (success) IPO, or Initial Public Offerings, of shares at the end of January.10.________ its first day of trading, Shake Shack went from $21 a share to just under $46 a share.Shake Shack's a quality hamburger.It's fast food, but not “fast food” food.Being part of the “fast casual” trend has helped Shake Shack.五、七选五阅读理解Tips for summer readingSummer holds many of my strongest and most powerful reading memories.I remember sitting under a tree in the backyard as a child, reading Anne of Green Gables as the shadows crossed the grass.I remember sitting in the back seat of the car on a long family road trip, sharing joke books with my brother and sister and laughing until we cried.__1__ I want all kids to enjoy the fun of summer reading, because summer reading has secret power.__2__ Here are some ways to motivate kids for summer reading.Make children the curators(管理人)of their reading lives.Have students set summer reading goals for themselves.__3__ Students can act as “chief curators” of the blog in turn so that over the course of the summer each of them takes on the responsibility of replying to posts and highlighting a popular title.__4__Taking “curiosity walks” is a fantastic way to bring informational text into a child's reading list.These walks also provide opportunities for authentic writing.Have children take an inspiration notebook on a class walk outside and write down anything they see that they would like to learn more about.Make reading more like summer camp.Let's combine reading with hands-on activities and make reading more like summer camp.We can take field trips to the library and search the shelves for books on a topic chosen out of a hat.__5__ Then they can bring that creation to share on the first days of school.A.It will set the stage for academic success.B.Bring the outdoors back into summer reading.C.Select some books and share them with your students.D.Set up a summer blog so you can all share recommendations.E.These memories became important stepping stones in my life.F.It is important to build and shape a strong reading life during school months.G.We can ask our students to create something in response to one of the books they've read.2018-2019学年高二上学期训练卷必修五Unit1 Great scientists英语(一)答案一、单句语法填空1. scientific2. operation3. in4. to5. apart6. forward7. to8. severely9. challenges 10.did二、单句改错1.a→the2.attend后加to3.Absorbing→Absorbed4.rejection→rejections5.去掉for6.him后加of7.exposed后加to8. at→to9.goes→went10.force→forcing三、完形填空1-5 CABAB 6-10 DBACB 11-15 ADCCA 16-20 BACDA四、语法填空1.choosing 2.restaurants3.but 4.eighth 5.working 6.to reach 7.a 8.financially 9.successful 10.On 五、七选五阅读理解1-5 EADBG。

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必修5 Unit 1 Great scientists 单元测试题第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5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,并标在试卷的相应位置。

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。

1. Why couldn‟t the woman see the man?A. He was ill at home.B. He went back to his hometown.C. He went on a trip.2. Who can the woman only invite to the dinner?A. The Turners.B. The Whites.C. The Tailors.3. When did the train leave?A. At 7:50.B. At 7:35.C. At 7:45.4. What happened to the woman?A. She was hit by a motorbike and injured.B. Her motorbike broke down.C. Her motorbike was stolen.5. When did the man go to see the doctor?A. On Friday morning.B. On Sunday afternoon.C. On Saturday morning.第二节(共15小题;每小题1.5分,满分22.5分)听下面5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,并标在试卷的相应位置。

听每段对话或独白前,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6段材料,回答第6至7题。

6. Where does the conversation take place?A. In the woman‟s house.B. In a dining room.C. In a hotel.7. Why does the man call?A. To complain about his room.B. To complain about the food.C. To order some food.听第7段材料,回答第8至10题。

8. How long haven‟t the two speakers seen each other?A. For a few months.B. For a year.C. For two years.9. Who broke his / her leg?A. The man‟s daughter.B. The woman.C. The woman‟s son.10. What does the woman‟s husband do on Monday nights?A. He takes care of his son at home.B. He studies at night school.C. He works in the company.听第8段材料,回答第11至13题。

11. What is the woman?A. B. C.12. Why won‟t they go there by bus?A. Because it will take a long time.B. Because it will be too crowded.C. Because no bus goes there.13. Whose bike will the man use?A. His sister‟s.B. The woman‟s sister‟s.C. The man‟s own.听第9段材料,回答第14至16题。

14. Why did the man quit the job?A. The salary was too low.B. The company didn‟t value him.C. He was tired of the job.15. When did the woman set up the company?A. A year ago.B. Half a year ago.C. Two years ago.16. If the man goes to the woman‟s company, which position will he get?A. Salesman.B. Department manager.C. Marketing manager.听第10段材料,回答第17至20题。

17. What is this passage mainly about?A. How people buy birthday presents.B. How people celebrate their birthdays.C. Why people celebrate their birthdays.18. In Brazil, what do people eat on birthdays?A. Long noodles.B. Cake.C. Special candies.19. How many times will a ten-year-old boy be bumped to the ground on his birthday?A. Ten times.B. Twenty times.C. Thirty times.20. Which of the following is TRUE?A. A person‟s birthday is the most important in Japan.B. A birthday is an all-day celebration in Britain.C. Birthday customs are the same in all the countries.听力填空题(选做):听第10段材料,根据你所听到的信息完成下列表格中第17至20题;每小题不超过三个单词。

第一节单项选择(共15小题;每小题1分,满分15分)21. — Could you take my place and go to meet Professor Smith from Britain?—_______________—He is a tall man wearing short hair.A. Why me this time?B. Are you familiar with him?C. How can I recognize him?D. What would you like to tell me?22. It was clear that Lucy was unhappy about her work. ____, it comes as no surprise that she has decided to leave the company.A. On the other handB. As a resultC. In additionD. After all23. — What took you so long?—I got lost. I have no ____ of direction.A. senseB. abilityC. knowledgeD. feeling24. The United Nation called on these countries to solve this problem in a(n) ____ way, adding that any negative measure would cause bad effects.A. immediateB. hostlyC. positiveD. enthusiastic25. _____ by Ren Changxia‟s deeds, many young girls want to be a policewoman in the future.A. To be inspiredB. Having inspiredC. Being inspiredD. Inspired26. As is well known, many deadly accidents _______ carelessness and irresponsibility.A. lead toB. result fromC. contribute toD. result in27. Only after a baby seal is pushed into the sea by its mother _____ to swim.A. how will it learnB. will it learn howC. it will learn howD. and it learns how28. — What made your skin look so terrible?—_______ to the sunlight for a long time.A. Because it was exposedB. After being exposedC. Being exposedD. Exposed29. ____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.A. A; aB. The; /C. /; theD. A; the30. Zhanglin was lost in computer games during his last year in high school, otherwise he _____ a student at Beijing University.A. would have beenB. can beC. has beenD. had been31. The primary purpose is to _____ those achievements in biological research _____ the public.A. make; known byB. make; known toC. make; know toD. make; knowing by32. He had to take the medicine three times a day, so as to be _____ the pain in the leg.A. far fromB. away fromC. apart fromD. free from33. Marie Curie and her husband Pierre Curie discovered radium and polonium, ____ they won the Noble Prize in Physics.A. asB. whereC. for whichD. on which34. — The water was left running all night long.—Y es. It seemed that John ___________. He was the last one to leave the lab.A. was to be blamedB. was to blameC. had been blamedD. should be blamed35. ______ you come across some new words, don‟t refer to your dictionary at once but guess their meanings according to the context.A. Every timeB. The first timeC. Now thatD. If only第二节完形填空(共20小题;每小题1.5分,满分30分)ALegacyofLoveAs a young man, Al was a skilled artist, who had two fine sons. One night, the elder of his sons 36 a severe stomach ache. Thinking there was nothing serious, Al 37 it. It was actually acute appendicitis (急性阑尾炎), 38 . The boy died that night.Knowing the 39 could have been prevented if he had realized the seriousness of the situation, Al‟s health40 under the great burden of his guilt. 41 , his wife deserted him and their six-year-old younger son. 42 to handle the pain of the two situations, he became an alcoholic (酒鬼).As the alcoholism 43 , Al began to lose everything he possessed and finally died 44 . When I heard of Al‟s death, I reacted with the same 45 the world shows for one who ends his life with nothing 46 to show for it. “What a complete failure!” I thought.As time went by, I began to 47 my earlier judgment. Y ou see, I knew Al‟s now 48 son, Ernie, the kindest and most caring man I‟ve ever known. I 49 that kindness and caring had to come from somewhere.One day I worked up my 50 to ask him how he became such a special person with his51 father the only one to raise him. Ernie said, “From my earliest memories as a child until I left home at 18, Al 52 my room every night, kissed me and said, …I love you, son.‟”Tears came to my eyes as I realized what a 53 I had been to judge Al as a failure. Although he had not 54 any material possessions behind, he had been a loving father 55 he left behind the most giving man I have ever known.36. A. discovered B. metC. developedD. appeared37. A. forgot B. ignored C. treated D. cured38. A. anyway B. however C. indeed D. somehow39. A. death B. damage C. hurt D. loss40. A. destroyed B. endedC. changedD. declined41. A. In fact B. Worse stillC. What‟s moreD. As a result42. A. Unwilling B. UnluckyC. UnableD. Unknown43. A. improved B. deepenedC. startedD. showed44. A. silently B. suddenlyC. aloneD. accidentally45. A. contempt B. respectC. honor D. interest46. A. special B. valuable C. material D. unique47. A. reconsider B. rediscoverC. reformD. replace48. A. famous B. adult C. successful D. single49. A. doubted B. wonderedC. knewD. meant50. A. time B. strength C. courage D. intention51. A. useless B. alcoholicC. hopelessD. lonely52. A. knocked B. searched C. visited D. stepped53. A. surprise B. danger C. mistake D. fool54. A. owned B. bought C. taken D. left55. A. and B. but C. when D. if第三部分阅读理解(共20小题;每小题2分,满分40分)ALinus Pauling, the only person who has won two undivided Nobel Prizes, was born in Portland, Oregon. He attended Washington High School but because of an unimportant detail he did not receive his diploma until 1962, long afte r he had received his Bachelor‟s degree in chemical engineering from Oregon State College in 1922. He had chosen to study this major because he could get a good job with it.He won the Nobel Prize for Chemistry in 1954 “for his research into the nature of the chemical bond and its application to the explanation of the structure of complex substances”. His interest in the “behavior”of molecules (分子) led him from physical chemistry to biologicalchemistry, especially of the human body. He began with proteins and their main parts, the amino acids (氨基酸), which are called the “building blocks of life”. In 1950, he constructed the first satisfactory model of a protein molecule, a discovery very important to the understanding of the living cell.During World War II, Pauling was a member of the Research Board for National Security, for which he was awarded the Presidential Medal of Merit in 1948. How ever, the use of the atomic bomb near the end of the war turned Pauling in a new direction. Having long worked on the structure of molecules, he took an immediate interest in the deadly effects of nuclear fallout on human molecular structures.From then on, Pauling protested the production of the hydrogen bomb and supported the prevention of the spread of nuclear weapons. Through his efforts, TheNuclear-Test-BanTreaty, declaring all nuclear tests to be illegal except underground ones, came into effect on October 10, 1963, the same day Linus Pauling was awarded the Nobel Prize for Peace.56. From the first paragraph, we learn that Linus Pauling ______________.A. didn‟t study hard while in Washington High SchoolB. is the only scientist who has won two Nobel PrizesC. was once badly treated in Washington High SchoolD. chose to study chemical engineering to earn his living57. Which of the following things did Pauling pay much attention to at first?A. The “behavior” of molecules.B. Physical chemistry.C. Biological chemistry.D. The human body.58. During World War II, Linus Pauling ___________.A. had to stop his research because of the warB. made great contributions to the safety of the countryC. joined the army to fight for the safety of the countryD. took part in researching nuclear bombs59. Which of the following is legal according to TheNuclear-Test-BanTreaty?A. The use of nuclear weapons.B. Testing hydrogen bomb on the ground.C. Testing nuclear weapons underground.D. The production of hydrogen bombs.BThere is no best way to learn a language, just different ways that suit different people. Some people prefer to “pick up” the language by reading books or magazines, watching films, visiting the country where the target language is spoken, etc. They focus on the meanings of words and don‟t worry too much about the language for ms used. This method often suits children if they find themselves in a foreign country or with foreign friends. However, this approach doesn‟t suit everyone if your aim is to become good at writing.Probably the most common way to learn a language is in a classroom with a teacher. The teacher can explain difficult words, give guidance, provide extra motivation and feedback onprogress. Unfortunately, some people do not have very pleasant experiences of learning a language in the classroom. Language learning can be great fun. But your writing level will be increased most efficiently this way. Besides learning in a classroom, you can use a personal tutor and arrange a very flexible system of tuition. That means if you are busy at a particular time, you can still arrange to have your language tuition at a time that suits you.With recent improvements in modern technology, it is now possible to purchase a wide range of multi-media materials for learning a language. Y ou can teach yourself using cassettes, videos, CD- ROMs, books, and any combination of these. This approach is best suited to students who are self-disciplined and well-organized. It also tends to assist with the development of reading and listening skills. But be sure to pick out materials of high quality. If you want to become fluent at speaking and writing a language, you‟ll also benefit from cooperating with other users.60. The method mentioned in the first paragraph can be considered _______.A. passive learningB. natural and active learningC. the most effective learning methodD. a structured learning method61. The underlined word “flexible” in the second paragraph means “________”.A. strictB. pleasantC. safeD. free62. From the passage, we can NOT learn that ________. A. people need to care about grammar when speaking a languageB. classroom studying can be boring sometimesC. not all learning materials can help improve our language levelD. students lacking self-control may not benefit much from self-study63. What might be talked about in the next passage?A. How to find a personal tutor.B. How to deal with the difficulties in study.C. How to cooperate with other language learners.D. How to find the best studying method.CA new effort is being launched to better educate parents about the earliest signs of autism (孤独症). Doctors at Maryland’s Kennedy Krieger Institute, one of the country’s leading autism centers, say they can now identify symptoms in children at a younger age than before.Children with autism withdraw into their own private worlds. Most children are not diagnosed until they are 3 to 5 years old, but the signs can appear as early as 6 months. “Most people use the rule of thumb that if a child is showing developmental delays before the age of 3, they‟ll catch up, but children with autism usually can‟t,” said researcher Rebecca Landa.Researchers at the institute are showing in a video just what symptoms to look for, even in an infant. In about 30 percent of autism cases, researchers are now documenting what they call “regressive(倒退的)autism”. One boy documented by the Kennedy Krieger Institute was engaged and smiling at his mother at 6 months. When he reached one year, he appeared a little shy, but again, there was no reason for concern. But at the age of 2, he was totally attached to his toys and the signs in him have become more obvious. “Although causes of autism remain unknown, now you can really see autism in its full form,” Landa said.Chloe was diagnosed with autism at 2, when she could not interact with the children around her, and she hated to be touched. But after four months of intensive treatment, her behavior improved significantly.“She is talking now,” Landa said. “She looks to the t eacher and shares enjoyment. She looks to others to know what she should be doing.” Chloe will still require many more years of treatment, but these early gains do last.64. Which of the following is NOT a symptom of a child suffering from autism?A. Not speaking to people around him.B. Not making eye contact with others.C. Acting aggressively to people around them.D. Fixing all his attention on the objects.65. What do the underlined words “these early gains” in the last paragraph probably refer to?A. Many years of treatment.B. Researches carried out by Landa.C. The early recognition of signs of autism.D. The cases Landa provided.66. From the passage, we can learn that __________.A. early signs of autism are often unnoticed or ignoredB. more and more children are suffering from autismC. autism can be completely cured if early symptoms are noticedD. children usually develop autism at the age of three67. What would be the best title for this passage?A. Early Symptoms of Autism in Children.B. Parents Should Look for Early Signs of Autism.C. New Effective Way to Treat Autism.D. Researchers Identify New Symptoms of Autism.DCome and discover the little big city in Switzerland. It‟s worth it to see the nicest sights. In fact, no m atter what your idea of fun is, you‟ll find it in Zurich.If it is your first stay in this city, you should start in the heart of Zurich, the historical romantic old part of town. The narrow alleyways lace the picturesque houses and only pedestrians (步行者) are allowed. Here, you’ll have a wonderful time drinking and eating in a charming bistro where you can sit outside and enjoy the sun. While you‟re enjoying the traditional Swiss food, you‟ll catch the fascinating atmosphere and be able to observe the d ifferent people who walk by.If you like, you can climb aboard a lake cruiser for a 3-hour tour around the lake or just walk up to the border of the lake and feed the proud swans and cute ducks, which is the cheapest way to enjoy it. Y ou will be absolutely amazed at the nice view over the lake of the high Alps covered with snow. For more fun, you can explore the lake with colorful paddle boats.Be sure to visit the beautiful mountain called House Mountain, which can give you the most unforgettable overview of Zurich. Y ou can take a ride on the railway built in 1923 to the top where you can breathe the fresh mountain air. From the lookout tower, you‟ll have a picturesque view of the lake, the city and the amazing Alps.Last, don‟t miss walking dow n the most famous shopping street, the Bahnhofstrasse, adistance of 1.4 kilometers. On both sides, you‟ll find everything you need and of course, you‟ll find the well-known Swiss banks.Come to see us. Y ou‟ll have an unforgettable stay in this little big city. Y ou won‟t regret it.68. Y ou may not have the chance of ________ if you go to Switzerland.A. going shopping on a famous shopping streetB. visiting the beautiful lake and mountainC. visiting the romantic old part of a townD. making some traditional Swiss food in person69. How can you enjoy the view of the lake if you don‟t have much money?A. By taking a lake cruiser.B. By climbing the snow-covered Alps.C. By taking an old railway train.D. By walking to the lake and feeding birds there.70. Where can you get the best overview of the city of Zurich?A. On the top of House Mountain.B. On the narrow alleyways.C. In the center of the town.D. Over the lake.71. The purpose of writing this passage is to _________. A. introduce some interesting places of ZurichB. encourage people to come to Zurich to have a visitC. let people know more about the history of ZurichD. tell people how to get fun when visiting ZurichEPlease excuse me if I‟m a little sad today. Mark is leaving, and I‟m feeling kind of sad.Y ou probably don’t know Mark. He’s been the heart and soul of the office for a couple of years, combining great professional skills with a sweet nature. And now he’s moving on to an exciting new professional opportunity. We’re genuinely (真诚地) pleased about it. But that doesn‟t make it easier to say goodbye.Life has a way of throwing these curve balls at us. Just when we start to get comfortable with a person, a place or a situation, something comes along to change the recipe. Our ability to cope with change and disturbance determines, to a great degree, our peace, happiness and contentment in life.But how do we do that? My friend Chris once told me that the answer can be summed up in four words “Go with the flow”. “It‟s like surfing,” Chris explained. “Y ou can‟t organize the ocean. Waves just happen. Y ou ride them where they take you, then you paddle back out there and catch the next one. Mostly you ju st take them the way they come.”I‟m not exactly sure, but I think Chris was saying that life is a series of events — both good and bad. There will always be life-influencing factors you can‟t control. When things come up, which aren‟t exactly in your plan, work them out and then move on to be truly successful. Of course, a rained-out picnic is easier to deal with than the sudden death of a loved one. But the principle is the same.We‟ll miss Mark, but let‟s focus on hopes for a brighter future. And then we‟ll go out and do everything we can to make that future happen.72. What is the probable relationship between the writer and Mark?A. Mother and son.B. Wife and Husband.C. Colleagues.D. Sister and brother.73. Which of the following is NOT an example of a curve ball in life?A. A wonderful neighbor moves away.B. The family‟s main bread-winner is out of work.C. A child in the family leaves for college.D. A person succeeds after many years of hard work.74. By comparing a rained-out picnic with a sudden death of a loved one, the writer wants to show __________.A. many changes could happen in our daily lifeB. some changes in life are easier to take than othersC. the sudden death of a loved person will destroy our lifeD. only what influences us greatly should be treated seriously75. According to the passage, truly successful people are those who _______.A. can predict what will happen in the futureB. are not interested in what is happening around themC. can make adjustments when the unexpected thing happensD. reach a higher position with the aid of a higher power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)I never used to enjoying science, but last term, I changed 76. _______the school, and the science teachers at my new school were great. 77. _______The laboratories have the latest equipment. Our physical teacher, 78. _______Mr Smith, takes us to public science lecture twice a month, and 79. _______these are always much interesting. All the lecturers are people who 80. _______have made great discoveries in his area of science. As is known, 81. _______there are many first-class scientists in America. In the last decades, 82. _______many American scientists won the Nobel Prize! The Nobel Prize 83. _______is the highest scientific prize, so we should be very proud with that. 84. _______Now I have begun to like science and deciding to study science well. 85. _______第二节书面表达(满分25分)请根据下列提示,写一篇关于中国著名科学家王选的文章。

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