目标测试题答案
2022学年人教新目标七年级英语上册Unit 6 Section B 同步测试题附答案

Unit 6 Section B (1a-1e)Ⅰ.根据句意及汉语提示写出所缺的单词1.We have some milk and bread for (早饭).2.What do you have for (午饭)?3.Look! Five (西红柿) are on the table.4.Do you like (胡萝卜)?5.My sister likes (草莓).Ⅱ.用括号内所给单词的适当形式填空6.—What (do) Lily like to eat?—She likes to eat hamburgers.7.Susan likes to eat (vegetable).8.Let’s (eat) some apples.9.I can see three (tomato) in the bag.10.—How about (play) basketball this afternoon?—That sounds interesting.Ⅲ.单项选择()11.John has egg and orange every day.A.an; anB.an; aC.a; anD.a; a()12.—My favorite food rice.What about you?—Hamburgers my favorite food.A.is; isB.are; areC.is; areD.are; is()13.They have some and for dinner every day.A.chicken; vegetableB.chickens; vegetablesC.chicken; vegetablesD.chickens; vegetable()14.—Does your brother like apples?—.He only likes oranges.A.Yes, he isB.No, he isn’tC.Yes, he doesD.No, he doesn’t ()15.They like apples, they don’t like bananas.A.andB.butC.orD.soⅣ.连词成句把下列单词重新排序,使之成为语意连贯的句子。
新目标初三英语第二单元测试试题及答案(2)

新目标初三英语第二单元测试试题及答案(2)四. 情景交际(每小题1分,共5分)根据对话内容,在空白处填上恰当的句子补全对话。
A: Good morning! (1)___________________?B: Yes, please. I’d like to buy something for my father. It’s Father’s Day tomorrow.A: Well, you’re a good boy. (2)___________________?B: I don’t know what to buy.A: (3)___________________?B: He likes reading books.A: (4)___________________?B: Books about sports.A: OK. Here are books about sports. You can choose some for your father.(Ten minutes later)B: I’ll take these two books. (5)___________________?8A: Forty yuan.B: Here’s the money. Thanks a lot.A: You’re welcome.五. 词汇运用(每小题1分,共5分)根据句意,用括号内所给单词的适当形式填空。
1. It would be a shame ________(steal) others’ things.3原创作品2. She ________(lay) her hand on my head.3. He led the child into the ________(warm) of the house.4. The radio ________(spread) the news as soon as it happened.5. Have you ever read ________(novel) written by Jane Austen?六. 完成句子(每小题1分,共5分)根据各题后括号内的要求完成下列各题,每空一词。
英语新目标八年级下Unit9-10单元测试题及答案

八年级下Unit9-10单元练习题一.单选1.Mr Li ______ Britain several times. Tomorrow he will give us a talk about British culture.A. has been onB. have gone toC. has been toD. have been to2. Lucy’s parents are teachers . ________ of them teaches Chinese. They both teach French.A. NeitherB. EitherC. AllD. Both3. ---It’s raining! When did it start? ---I don’t know exactly. In fact, it _____ all this afternoon.A. lastsB. has lastedC. lastedD. will last4. Neither you nor he ________ worried.A. areB. isC. amD. have5. --- ______ to England? ---No, never, but I went to Canada a few years ago.A. Have you beenB. Have you goneC. Did you goD. Will6. I’d like to ________ on the huge boat for a week.A. take rideB. take a rideC. ride takeD. ride a take7. ---Do you often hear John ________ in his room? ---Listen! Now we can hear him ___ in his room.A. sing, to singB. singing, singingC. sing, singingD. to sing, singing8. These children had fun ________ and ________ English.A. learn, speakB. to learn , singingC. learning, speakingD. learnt, spoke9. His birthday party ______ an English song.A. ended up singingB. ended singingC. ended up to singD. ended up with singing10. Cathy held a birthday party yesterday. We had a lot of ________ at the party.A. funB. funsC. funnyD. interest11. _______ I ever wanted to do was to find a job and support my family.A. ThatB. AllC. ItD. How12. _______ is spoken all over the word.A. English languageB. An English languageC. The EnglishD. A English language13. I think ________ fun to learn another language.A. this isB. that isC. it isD. it14. We had problems _________ our English exam this evening.A. haveB. hasC. hadD. having15. About ________ of the workers in the clothes factory are women.A. third fifthsB. third fifthC. three fifthsD. three fifth16. You can eat delicious food at a good price in my restaurant_______ you like.A. wheneverB. whereverC. howD. however17. Kunming is 1800 kilometers _______ Nanjing.A. far away fromB. far fromC. away fromD. far away18. --- ________ the population of Hong Kong? --- Seven million people.A. How isB. How much isC. What areD. What is19. ---Would you like to see the film Confucius with me this evening? --- I’d love to, but I ______ it. A. hadseen B. have seen C. watch D. am watching20. She ______ as an animal trainer since 2003 .A. has workedB. worksC. will workD. worked21. _______ of the students in our class _______ money to the disabled people these days.A. Two third , had raisedB. Two thirds , has raisedC. Two three , have raisedD. Two thirds, haveraised22. ---Which do you prefer, coffee or tea? ---_____ , thanks. I’d like a glass of orange juice.A. EitherB. NeitherC. BothD. None23. I am sleepy. The loud music _______ this morning.A. got me upB. got up meC. woke me upD. woke up me24. They took a trip to Suzhou and Hangzhou, and ________ in Shanghai.A. opened upB. got overC. ended upD. got out25. Qingdao is a good place ______ . Do you want ______ there?A. to live , to liveB. living , livingC. living, to liveD. to live , living26. _______ you don’t hurt any of them.A. Be sure aboutB. Be sure ofC. Make sure that27. She likes to put all her things ______ .A. in orderB. with orderC. for order28. The boy looked unhappy, _______?A. wasn’t heB. didn’t heC. did heD. was he29. Don’t forget to put the book on the shelf, _________?A. do youB. don’t youC. will youD. won’t you30. What _______ terrible weather it is !A. aB. anC. theD. /31. ---Jack is really hard-working, isn’t he? ---_________A. He is sure.B. He isn’t sureC. He sure isD. He sure isn’t32. ---You don’t love violin music, do you? ---________. But I like piano music.A. Yes, I doB. No, I don’tC. Yes, I don’tD. No, I do33. I have _______ all of my newspapers, but I can’t find the article.A. looked atB. looked afterC. looked forD. looked through34. ---Has Jim come ________ ? ---Yes. He has _________ been here for ten minutes.A. yet, alreadyB. already, yetC. yet, yetD. already, already35. With my friend Li Ming’s help, I ______ well with my classmates in the new school.A. come onB. look throughC. come alongD. get along36. I received a nice gift from Tina. Now I’m writing a thank-you note_______ it.A. atB. onC. asD. for37. The accident was very serious. ________100 people were killed.A. At leastB. At firstC. At mostD. At times38. Tom and Tony are both my classmates . They are friendly_______ me.A. forB. toC. withD. at39. Two people ______ in the dining room were talking aloud.A. waitingB. waitedC. waitsD. to wait40. Go away and leave me ________.A. lonelyB. aloneC. lonelyD. oneself41. You bought a new computer last week, _____ you?A. aren’tB. don’tC. didn’tD. haven’t42. ---Few well—known singers came to the concert, did they?---_______ . Such as Andy Lau, Jay Chou and Kristy Zhang.A. No, they didn’tB. Yes, they didC. No, they didD. Yes, they didn’t43. ---Let’s go skating, ______? ---OK. Let’s go.A. do youB. don’t youC. will youD. shall we44. ---Do you think it’s going to rain? ---_______. I want to go swimming.A. I doB. I think soC. I hope soD. I hope not45. How ______ it rained last night!A. heavyB. heavilyC. hardlyD. heavier46. I know it’s very sunny there, ______?A. don’t youB. do youC. isn’t itD. is it47. I’m feeling bad today. Here “bad” means ______.A. sorryB. not happyC. not wellD. afraid48. ---I like reading story books. ---________!A. So does MaryB. Mary does soC. So did MaryD. Mary did so49. Don’t forget_______ the TV when you go to bed.A. turn offB. to turn offC. turning offD. turned off50. ---How much did the T-shirt________ you? ---More than sixty yuan.A. payB. costC. spendD. take二.根据句子意思、首字母和所给词的适当形式填空1. There is a lot of _______ (sandy) on the beach.2. What do you think of my ______ (go) to study abroad?3. You should make a n______ of her address , or you’ll forget it.4. Now lots of movies stars have a large number of f_________ supporting (支持) them.5. We should take every chance that comes a________.6. The boys had a great time _______ (play) football in the park.7. Computers make it much _________ (easy) to find information.8. _______ (see) from space , the earth looks like a blue ball.9. Let’s go to the a________ park.10. My parents ____________ (teach) English in this school for ten years.11. My friend Amy _________ (be) to the zoo a lot of times.12. Neither Jim nor I ________ (be) good at math.14. I _______ ever _______ (speak) to a foreigner.15. I saw the students _______ (play) volleyball on the playground at that time .16. Neither of the twins _________ (have) eaten mooncakes.17. Jack _____________ (study) in this school since two years ago.18. ---Where’s Anna? ---She __________ (go) to China. And she’ll come back in a month.19. They ended up ___________ (agree) with others in the end.20. The flight a__________ told the passengers to keep quiet when others had a rest.21. Who d___________ the New Land?22. What’s r____________ to become a flight attendant?23. China has the largest p_________ in the world.24. They fought back ________ (brave) .25. The beautiful scenery of Yunnan a_________ many tourists every year.26. There are two _________ (thousand) students in our school.27. At the _______ (begin) of the class , the teacher told us a true story.28. The more you practice, the _______ (well) you play the piano.29. Do you have any problem _________ (finish) the job?30. At last the old man arrived at the airport _________ (safe) .三.汉译英1. It looks like rain. You’d better ______ _______ ______ ______ _______ (带上雨伞)2. I _____ ______ _______ _____ ( 对……没有把握) it at all.3. Please ______ _______ _____ _______ ( 开张……的清单) the books you need.4. Her house ______ ______ ________ _______ _______. ( 看上去和我们的一模一样)5. Please _____ these cards ______ _______ .( 按顺序排好)6. Your sister is _______ ______ (浏览) books in the bookstore.7. Be careful when you _____ _____ (穿过) the street.8. ---Lucy is a good student , isn’t she ? ---_______ ______ _____. (她当然是)9. It ________ ________ (好像) rain. You’d better put on your raincoat.10. This TV set ________ (花费) them 120 dollars.11. _______ the _______ (多少钱) of these books all together?12. I’m alone tonight. Would you like to _______ ______ (陪同) with me?13. Lily always ______ me ________ (帮助) my English.14. ---How do you _______ _______ _____ (与……相处) your classmates? ---Very well.15. Can you help me write _______ ______ ______ (一封感谢信) ?16. By the end of last term, we had learned ________ ______ (至少) 1,000 words.17. Many middle---aged women enjoy ______ ______ (闲聊).18. Nowadays , many buildings are built with _________ (电梯) , which is very convenient.19. He loves sports. Especially he enjoys playing _________ (曲棍球).20. Do you know the girl ______ _______. (要来)21. 每个星期天都下雨,是吗?It _______ every Sunday, _________ ______ ?22. 昨天晚上我过得很愉快。
新目标英语八年级下Unit5单元测试题及答案(含听力原文)

题号题号ⅠⅡ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ 总分总分 得分得分2.3.4.听句子,选择最佳答语。
(5分) )6.A.Y es ,I do. B .No ,I won't. C .)7.A.Sleeping. B .Enjoy reading. C .)8.A.Y es ,I can. B .This is Jenny speaking.C .I'm here. 小题。
听第二段对话,回答第13-15小题。
()13.Who jumped into the river? A.A young man. B.A driver. C.Rose. ()14.When did the accident happen? A.At 7:20 a.m. B.At 7:30 a.m. C.At 7:40 a.m. ()15.How many people are mentioned (提及的) in the accident? A.Two. B.Three. C.Four. Ⅳ.听短文,选择正确答案。
(10分) ()16.What was the speaker doing in the morning? A.Cooking breakfast. B.Running. C.Reading. ()17.How did the speaker usually go to work? A.By car. B.By bike. C.By bus. ()18.What was in the bike's basket (车筐)? A.The bag. B.The umbrella. C.The book. ()19.When did the speaker get to the bus stop again? A.At 7:00. B.At 7:40. C.At 8:20. ()20.What happened when the speaker was waiting for the bus? A.It started to rain. B.It started to snow. C.It started to wind. 笔试部分(95分) Ⅴ.单项选择。
人教版新目标初中英语九年级上册Unit 2同步测试题及答案

人教版新目标初中英语九年级上册Unit 2同步测试题及答案第二部分英语知识运用Ⅰ. 根据句意和汉语或首字母提示补全单词(每小题1分,共10分)21. The old woman is afraid of flying in an_______ (飞机).22. —What _______(造成) the traffic accident?—The bad weather.23. T ell me_______(确切地) where he lives so that I can find him.24. In the end, they made a difficult _______ (决定) to send their son to a boys’ boarding school.25. My young brother likes reading _______ (连环漫画) very much.26. —T om, you should pay a_______ to your spelling.—Sorry, I will.27. Mary used to c______ gum a lot in class, but now she doesn’t do again.28. These days I hardly have time to c______ with my friends on the Internet.29. Our English teacher was very p_______ and helpful.30. You eat too much c_______. It’s bad for your teeth.Ⅱ. 单项选择(每小题1分,共15分)31. He_______ suffer the Internet after school, but now he doesn’t like it.A. use toB. using toC. used toD. uses to32. Mary is afraid to go out at night because she is ______ the dark.A. terrified ofB. interested inC. worried aboutD. angry with33. Many girls are terrified of _______ alone at night, but my sister isn’t.A. walkB. walkingC. walkedD. to walk34. —I don’t know how to study English well.—I think you should _______ your spelling.A. pay attention toB. listen toC. worry aboutD. pay for35. _______we are clever, we still need to work hard.A. IfB. UnlessC. Even thoughD. Since36. Her mother couldn’t _______to pay for her children’s education because her family is very poor.A. wantB. affordC. tryD. offer37. My brother likes to sleep ______ the light _______.A. on; on C. with; on C. with; turn on D. with; in38. —Do you have any trouble ______ the teachers in class, Jim?—Yes, especially in Chinese class.A. to understandB. understandC. understandingD. understood39. When he was young, he was ______ in science.A. interestingB. interestedC. interestsD. interest40. Mario used to ______ after school.A. practice playing the pianoB. practicing playing the pianoC. practice play the pianoD. to practice playing the piano41. I used to spend two hours ______ my homework, but now only one hour.A. doingB. doC. to doD. did42. Pleas e don’t give up ______ and you’ll succeed in the end.A. tryB. tryingC. to tryD. tries43. —Did they solve all the problems______?—Yes, they did.A. at the endB. at the end ofC. in the endD. by the end of44. It _______ that T ony has changed a lot.A. look likeB. seemsC. lookD. seemed45. —_______ work in a car factory?—No. I used to work in a computer company.A. Did you used toB. Did you use toC. Do you used toD. Do you usetoⅢ.46. When Martin was a child, he caused problems for _______ and his family.47. The girl is ______ of the dark, so she doesn’t go out in the evening.48. His father’s ______ made him very sad.49. T o our ______, he didn’t die and came back again.50. You have to make a quick _______ before it rains.Ⅳ. 句型转换(每小题2分,共10分)51. I used to watch TV in the evenings. (改为否定句)I ______ _____ to watch TV in the evenings.52. Jeff used to be shy. (改为反意疑问句)Jeff used to be shy, _______ ______?53. We walked to school before. But now we don’t. (合并为一句)We _______ ______ _______ to school.54. My mother used to work in a supermarket.(就划线部分提问)_______ did your mother use _______ ______?55. I used to spend two hours chatting online. (就划线部分提问)_______ ____ ______ you use to spend chatting online?Ⅴ. 根据汉语提示完成下列句子(每小题2分,共10分)56. 我以前非常惧怕黑暗。
职业生涯规划》期中测试题及答案

职业生涯规划》期中测试题及答案期中测试题一、单项选择题1.下列各项不属于职业的是()。
A.医生B.会计C.学生D.工程师2.职业生涯的特点不包括()。
A.发展性B.合作性C.终身性D.阶段性3.中职生的职业生涯规划,最根本也最现实的目标是()。
A.实现理想B.到名企工作C.找到稳定的工作D.初次就业成功4.人生价值可分为()和社会价值两个方面。
A.自我价值B.道德价值C.职业价值D.人生价值5.()决定着职业理想追求的层次。
A.政治思想觉悟、道德修养水平B.知识结构、能力水平C.性格、气质、情感、意志D.性别、身体等生理特质6.申请执业资格注册,必须同时具备下列条件()。
①已经取得《执业资格证书》②遵纪守法,具备职业道德③经所在单位考核合格④身体健康,能坚持工作⑤必须工作5年A.①②③④⑤B.①②④⑤C.①②③⑤D.①②③④7.需要有逻辑思维严密、喜欢独立思考的性格的职业是()。
A.律师B.导演C.画家D.钢琴师8.具有热情奔放、跳跃思维的性格的人适合做()。
A.会计B.驾驶员C.律师D.导演9.下列省份不属于以京津为核心的环渤海经济圈的是()。
A.辽宁B.北京C.天津D.江苏10.确定()是职业生涯规划的关键环节,其他环节全围绕它的确定展开。
A.发展目标B.长远目标C.阶段目标D.职业理想二、填空题1.职业生涯是指一个人一生的职业发展道路,即一个人一生连续从事的职业和工作职务的发展道路。
2.职业生涯是个体的概念,它是个体的职业经历,而非群体或组织的行为经历。
3.在树立理想的过程中,职业理想始终处于主导地位,它制约和决定着人们的道德理想、职业理想、生活理想。
4.执业资格证书由劳动保障部统一印制,劳动保障部门或国务院有关部门按规定办理和核发。
5.职业成功因素主要是指与个体成功地从事某种工作有关的能力因素,是一些对于不同职业的成功、在不同程度上有所贡献的心理因素。
6.从时间顺序的角度看,职业生涯发展目标是按长远目标,长期目标,阶段目标,短期目标的顺序而依次确定的。
人教版新目标九年级英语Unit 1测试题含答案

人教版新目标九年级英语Unit 1测试题含答案一、听力测试(共20小题,计20分)(略)二、单项填空(共15小题,计15分)16.—How do you study English? —I study by____with a group.A. workingB. workC. to work17.I have learned English ____ that way.A. a lot ofB. a lotC. lots of18.Watching movies really improves my ____skills.A. spokeB. spokenC. speaking19.I think it’s ____ hard____ understand English grammar.A. so; thatB. such; thatC. too; to20.I often feel ____nervous when I speak English in Public.A. a littleB. kind ofC. A and B21.____you read, ____you’ll be.A. The much; the fasterB. The more; the fasterC. The many; the faster22.My English teacher spoke ____quickly ____I did not follow her most of the time.A. too; toB. enough; forC. so; that23.You can watch ____English movies to improve your English.A. otherB. anotherC. others24.Don’t ____in a dictionary or on the Internet when you don’t know the words.A. look up itB. look it upC. look them up25.Listening to something interesting is the secret____ language learning.A. toB. onC. of26.Learning more grammar can help me have a better____ of English movies.A. understandB. understandingC. understood27.Do you have a partner ___ English____?A. to practice; toB. to practice; withC. to practice; about28.____you learn something well, you will forget it.A. Even ifB. AlthoughC. Because29.Tom, can you explain the information to ____student.A. the otherB. one anotherC. another30.A a good English learner, you must use your time and money ____.A. wildly B wisely C. widely三、阅读理解(共25小题,计25分)ADo you know that one fifth of the people in the world speak Chinese? About 873million people speak it at home, in China. Outside China, people in Singapore, Malaysia and some other Asian countries also speak Chinese.That makes Chinese the most widely used first language in the world.Schoolchildren in the UK and USA are learning Chinese.In the future, people will speak Chinese as an international language because China is becoming a very important country in the world.Many foreigners visit China, and many countries trade China. China is a worldleader, and so many people will learn Chinese and speak Chinese as an international language.根据短文内容,判断下列句子正误,正确的用“A”表示,不正确的用“B”表示。
新目标英语八年级下Unit6单元测试题及答案(含听力原文)

Test for Unit 6〔时间:120分钟,总分值:120分〕题号ⅠⅡⅢⅣⅤⅥⅦⅧⅨⅩⅪ总分得分听力部分〔25分〕Ⅰ.听句子,选择与其意思相符的图片。
(5分)()1.()2.()3.()4.()5.Ⅱ.听句子,选择最正确答语。
(5分)()6.A.It's boring.B.My father.C.I want to buy it this afternoon.()7.A.Here we are. B.This one.C.Sure.()8.A.OK,you can. B.Yes,she will.C.No,I'm not.()9.A.Me,too. B.You are welcome.C.Yes,please.()10.A.Thank you. B.No,thanks.C.I will.Ⅲ.听长对话,选择正确答案。
(5分)听第一段对话,答复第11-12小题。
()11.What's the boy's favorite cartoon star?A.Mickey Mouse. B.Monkey King.C.Sponge Bob.()12.How often does the girl watch Mickey Mouse?A.Twice a week. B.Four times a week.C.Every day.听第二段对话,答复第13-15小题。
()13.Why does the girl call Dave?A.To invite Dave to go to a movie with her.B.To give two tickets to Dave.C.To talk about her favorite movie with Dave.()14.What kind of movie is it?A.A cartoon. B.A comedy.C.An action movie.()15.When will they meet?A.At 6:30. B.At 6:45.C.At 7:00.Ⅳ.听短文,完成下面的表格。
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目标测试题答案Company number:【0089WT-8898YT-W8CCB-BUUT-202108】第四章参考答案目标测试题一角的概念的推广一、选择题:二、填空题:6.{α|α=k·360°+135°,k∈z }7.{-690°,-330°,390°,30°}°,-169°·36+240,k∈z,-120°10.α-β=(2k+1).180°,k∈z,两者相关180°的奇数倍。
三、解答题:11.∵90°+k·360° < α <180°+k·360° (k∈z)∴45°+k·180° <α<90°+k·180°2当k为偶数,即k=2n(n∈z)时。
α<90°+n·360°45°+n·360°<2α是第一象限的角此时2当k为偶数,即k=2n+1(n∈z)有225°+n·360°<a<270°+n·360°2α是第三象限的角此时2α是第一或第三象限的角∴212.在直角坐标系上表示Α、B集合,如图所示∴Α∩B={α|150°+k ·360° < α <k ·360°+300°,k ∈z} Α∪B={α|k ·360°+60° < α <k ·360°,k ∈z}目标测试题二 弧度制一、选择题: 二、填空题:6.π3167.2倍 8.a 3π ;1 9.2弧度,|AB|=2sin 1 10.}2322|{πππ<≤-<≤-x x x 或三、解答题:11.解:(1)α=1690o =1801690π⨯=πππ1825818169+=∴ππα182524+⨯=(2)依题意)(,18252Z k k ∈+=ππθ 由θ∈(- 4π,- 2π)得ππππ2182524-<+<-k ,又k ∈Z ∴k= - 2∴πππθ184718254-=+-= 12.解:设顶角为α,底角为β (1)若α:β=2 :3,设α=2k, β=3k , ∵α+2β=π,即2k+6k=π,∴8π=k∴πβπα83,4==即顶角与底角分别为ππ83,4(2)若β:α=2 :3,设α=3k, β=2k ,∵α+2β=π,即3k+3k=π,∴7π=k∴α=π73,β=π72∴顶角与底角分别为π73,π72目标测试题三 任意角的三角函数一、 选择题: 二、 填空题: 6.23- 7.正号 8.13171317-或 9.4π10.32π 三、11.设P(x ,y),则依题意知|y| :|x| =3 :4∵sin α<0∴α终边只可能在第三、四象限或y 轴负半轴上 若P 点位于第三象限,可设P (-4k ,-3k ),(k>0)∴r=5k ,从而54cos -=α,43tan =α若P 点位于第四象限,可设P (4k ,-3k ),(k>0) ∴r=5k ,从而54cos =α,43tan -=α 又由于|y| :|x| =3 :4,故α的终边不可能在y 轴的负半轴上综上所述:知cos α的值为5454-或,tan α的值为4343或-12.解:∵直线y = - 2x 经过第二、四象限,所以应分两种情况讨论 (1)当α终边在第二象限时,设P (a,-2a ),(a<0) ∴2tan ,55cos ,552sin -=-==ααα (2)当α终边在第四象限时,设P (a,-2a ),(a>0)∴2tan ,55cos ,552sin -==-=ααα 目标测试题四 同角三角函数的基本关系式一、 选择题: 二、 填空题: 6. 37.0或88.1-tan α9.89210.csc θ三、 解答题: 11.解:由51cos sin =+x x ,得x x cos 51sin -= 代入sin 2x+cos 2x=1得:(5cosx-4)(5cosx+3)=0∴54cos =x 或53cos -=x 当54cos =x 时,得53sin -=x又∵π<<x 0,∴sinx>0,故这组解舍去当53cos -=x 时,54sin =x ,34tan -=x(2)∵51cos sin =+x x∴(sinx+cosx )2 = sin 2x+cos 2x+2sinxcosx =251 ∴2512cos sin -=x x 又π<<x 0,sinx>0,∴cosx<0(sinx-cosx)2=1-2sinxcosx=254925241=+又∵sinx – cosx>0∴sinx – cosx =57sin 3x – cos 3x = (sinx-cosx)(sin 2x+sinxcosx+cos 2x)=12591)25121(57=-⨯12.解:当m=0时,0cos sin tan ==ααα;当m=±1时,α的终边在y 轴上,tan α无意义。
当α在一、四象限时,∵cos α>0∴221sin 1cos m -=-=αα∴222111cos sin tan m m m mm --=-==ααα 当α在二、三象限时,∵cos α<0∴221sin 1cos m --=--=αα目标测试题五 正弦、余弦的诱导公式一、选择题:1.c 2.A 3.C 4.C 5.A 二、填空题: 6.23 7.±65π8.11-+m m 9.[(2k-1) π,2k π] 10.2 三、解答题:11.原式=)cos (·sin()cos()n s (sin αα)παπα--+--αi =)cos ?(sin )cos (sin 2αααα--= sin α12.1611目标测试题六 两角和与差的正弦、余弦、正切一、选择题: 二、填空题: 6:33 7:2627- 8:21 9:3 10:3 三、解答题:11、 解:∵βα,是同一三角形的两个内角 ∴ 0<βα+<π ∵cos()βα+=-294 ∴sin()βα+=)(cos 12βα+-=97∵cos β= - 31∴sin β=β2cos 1-=322∴sin α= sin()ββα-+=sin()βα+cos β- cos()βα+sin β= 31∴cos α=α2sin 1-=322 ∴tan α=ααcos sin =42 ∴cot α=2212、解:∵在△ABC 中,若cosA=53>0 ,cosB=1312>0 ∴A ,B 为锐角sinA=A 2cos 1-=54 sinB=B 2cos 1-=135∵ cosC=cos[π-(A+B)]=-cos(A+B)=-(cosAcosB-sinAsinB )=6516- < 0∴2π< C <π 即C 为钝角 ∴△ABC 为钝角三角形.目标测试题七 二倍角的正弦、余弦、正切一、选择题: 二、填空题:6:41 7:θtan 8:33- 9:2524- 10: 2csc α三、解答题:11.解:原式= Sin50o (1+ 10cos 10sin 3)=Sin50o(10cos 10sin 310cos +)=2sin50o 10cos 50cos = 10cos 100sin = 10cos 80sin =10cos 10cos =1 12:.解:由y=sin 2x+2sinxcosx+3cos 2x得:y=2sinxcosx+2cos 2x+1 =sin2x+cos2x +2 =)2cos 222sin 22(2x x ++2 =)42sin(2π+x +2当42π+x =ππk 223+ 即x=ππk +85 时,1)42sin(-=+πx y=2-2所以当{)(85|z k k x x ∈+=ππ}时,函数取得最小值,最小值为2-2.目标测试题八 正弦函数、余弦函数的图象与性质一、选择题: 二、填空题:6.(2k π, 2k π+π) ; π-π6 、-1、 k π+π3 、1 ; >cos2>cos39. 2π3 ; 10. (2k π+2π3 , 2k π+4π3 ).三、解答题:11.(1)y=(cosx-2)2-1 y max =8,y min =0(2).y=1-2sin 2x+3sin =-2(sinx-34 )+178 )y max =2, y min =-4(x)=1-cos 2x+acosx+158 a-132 =-(cosx-a 2 )2+18 (2a 2+5a-4)⑴若0≤a2 ≤1,即0≤a ≤2,当cosx=a 2 时,f(x)最大。
此时 18 (2a 2+5a-4)=1(2) )若a2 >1,即a>2, 当x=0时,即cosx=1时,f(x)最大.此时 -(1-a 2 )218 (2a 2+5a-4)=1 a=2013 (不符和条件)(3)若a 2 <0,即a<0 , a=-4(舍)或a=32 ,当x=π2 时,f(x)最大.此时 -(0-a 2 )2+18 (2a 2+5a-4)=1 a=125 (不符和条件)综上可得:a=32目标测试题九 函数 y=Asin(ωx+φ) 的图象一、选择题: 二、填空题:6.(-∞,+ ∞),(-15 ,15 ), 2π3 ,15 ,15 ,32π ,-π3 ; =-1; =sin2(x+π6 );9.右,π2 ;10.(1)(3) 三、解答题:=sin(2x+π3 )=sin[2(x+π6 )]先向左平移π6 个单位,横坐标再缩小到原来的一半而得到. 12.(1)要使f(x)有意义,需满足 cos(2x-π3 )>0∴ 2k π-π2 <2x-π3 <2k π+π2∴ k π-π12 <x<2k π+5π12∴ f(x)的定义域为{x|kπ-π12 <x<2kπ+5π12 ,k∈Z}(2)当a>1时,f(x)的单调增区间是(kπ+2π3 , kπ+7π6 )单调减区间是(kπ, kπ+2π3 ) (k∈Z)当0<a<1时,f(x)的单调增区间是(kπ,kπ+2π3 ) (k∈Z)单调减区间是(kπ+2π3 , kπ+7π6 ) (k∈Z)(3) f(-x)=loga cos[-2x-π3 ]=log a(2x+π3 )∵ f(-x)≠f(x) 且f(-x)≠-f(x)∴f(x)不具有奇偶性。