高中英语北师大版版必修2：Unit5 Rhythm-Warm-up and lesson1 Performance

目标：

To practise the vocabulary related to concerts and performances. To read and learn a concert review. To practise using will for decisions.

To practise using time clauses with as soon as, when, before... and clauses of concession with although/though.

课前 自主预习

I 词汇认知 A. 单词识记

1. 效果，作用 ____________ n. 2. 非凡的 ___________ adv. 3. 有创造力的 ____________adj. 4. 奖品___________ n. 5. 不清楚的 __________ adj. 6. 民间的 _________ adj.

7. 强大的，有力的________adj. 8. 基地，基础__________ n/v. 9. 使失望__________ v. 10. 气愤，愤怒 ___________n. 11. 表演（者）____________ __________ ___________ v. /n. 12. 系统 ______________ n. 13. 使人印象深刻__________ v. 14. 贯穿，遍及_________ prep. 15. 唱片；相册 ___________ n. 16. 观众，听众 ___________ n. B.根据句子的意思，写出本课的单词

１Canadian singer Alanis Morissette _____________ (习惯了)the spotlight. 2 Her most famous album Jagged LittlePill, __________(出版) in 1995. 3 She has _________________(继续举行) great performances on stage.

4 Her singing was ________ (充满)feeling; the first part of the song __________ (充满)with anger,_____(然而) the last part expressed tender love and joy. 5 The audience still ____________(设法) join in the concert.

6 Everyone agreed that they were greatly _________ (留下了深刻地印象) by Morissette?s

brilliant music and singing.

7 __________ (尽管) the auditorium was cold, the audience still managed to join in the concert. II根据课文内容翻译以下短语

1.习惯做某事_______ 2.出版，发行__________ 3.从那时起_______ 4.赢得…的奖励________ 5.有坚实的歌迷基础________________________

6.极冷的夜晚_______ 7.加热，使暖和...________ 8.讲述…的故事__________________

9.伴随着…唱歌_________ 10. 被深深打动___________

课堂 互动探究 Period 1 Reading

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Teaching aims:

To practise the vocabulary related to concerts and performance. To read and understand a concert review To practise using will for decisions

To practise using time clauses with as soon as, when, before... and clause of concession with although / though Teaching difficulties:

To practise using will for decisions

To practise using time clauses with as soon as, when, before... and clause of Teaching Aids:

computer and cassette Teaching procedures: Ⅰ. Warming up

First listen to a song that is sung by Alanis ----everything

T: Now pop songs are popular with teenagers. Have you heard of the song? What do you think of the song? S:

T: Do you know who sing it? S:

T: Teacher show the picture of Alanis ---the superstar, a true performer. Do you want to know her? S:

T: Now let?s read an article about the superstar, and you will learn more information about her. Ⅱ Reading

Read the concert review and match the four paragraphs with the titles. a) the end of the concert para4

b) how the audience reacted para3 c) the songs played para2 d) the start of the concert para1

T: Ask the question: How much do you know about her S:

T: The Canadian rock singer and song writer, has won Grammy Awards for Best Rock Song. Her has made many albums. She become world-famous singer. Do the exercise 3.

Read the review again and answer these questions. Ⅲ Understanding the text

a) Correct errors

1. She is used to be in the public eye. 2. Her new album was come out in 1995.

3. On last Thursday night, hundreds of fans went to the concert held in Cambridge. 4. The 30-years-old singer is popular with young people. 5. The song tells the story of someone looks for real love.

6. The atmosphere was extremely exciting so that many people stand to cheer. 7. The Canada singer was famous in her twenties.

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8. Her new album that was published last week is sold well.

Answers: 1. be改为 being 2.去掉was把come 改为came 3.去掉 on 4. years 改为year 5. looks改为 looking 6. stand 改为stood 7. Canada 改为Canadian 8. 去掉 is 把sold改为 sell

b) According to the text arrange the right order.

1. Alanis won this year?s Grammy Award or the best rock song.

2. Morissette gave a creative and powerful performance in the song ?Utopia?.

3. Many fans went to the Corn Exchange in Cambridge, England to see her in concert. 4. Everyone in the auditorium agreed that they were greatly impressed by the concert. 5. Alanis? album Jagged Little Pill came out Answers: 5 1 3 2 4 Ⅳ speaking

We know singer?s performance is important for a concert, besides singers concert need other?s stage effect, such as (show a slide) guide student to say stage design, lighting, special effects and so on.

Have you ever watched a concert “live”, on TV or on video? Tell the class about it using the Key Words to help you. Do the exercise 1

Show a slide, ask students to say music style. Rock ?n?roll

Voice your opinion

Why are pop music and rock ?n? roll loved by many young people Ⅴ Vocabulary Do the exercise 4 Ⅵ Grammar

Do the exercise 6and 8

Listen to the telephone conversation. Who decides to pick up the concert tickets , Sue or Ricky? What verb form do Sue and Ricky use to make sudden decisions as they speak? Do the exercise 7

Listen again. Who said these things, Sue or Ricky?

Check these answers with the whole class and then look at the sentences, what linking words are used?

In order to help students further understand the text the teacher can ask the following questions. 1. Why can?t Ricky pick the tickets up at lunchtime tomorrow? 2. Why can?t he pick them up after school tomorrow? 3. Where does Ricky?s mum work?

4. Where is Sue going after she?s got the tickets? Do the exercise 9, 11 and 12 Ⅶ Language in use

Work in pairs and talk about your future plans. Use the expressions below to help you. go to college, find a job, rent a flat, learn to drive, go on holidays, continue studying Ⅷ Homework

Do the exercise page 66 and 67.

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目标：

To master the important language points in this lesson.

课堂 互动探究

§核心词汇 讲·练·悟 1．effect n.

(1).效果；结果；作用，影响 （常和介词on连用） have an effect on对…有影响，起作用 take effect 实施，奏效，开始起作用 come into effect 开始生效，实施

put/ bring …into effect 使…生效，实施 side effect 副作用

The medicine is of no effect on the patient. 这药对病人无效。

It won?t be easy to put the plan into effect. 实施这个计划不是一件容易的事。 拓展：

effective (adj.) 有效的，生效的 affect (v.) 影响 应用:

I took the medicine, but it didn?t have any ______on me.

A. effect B. answer C. cause D. affect

答案 A 句意：我吃了药，但是不起作用。have an effect on对…有影响，起作用 2．disappoint vt. 使（人）失望，使受挫；使（希望）落空 I promised to buy my son a new bicycle but I had to disappoint him. 我答应给儿子买辆新自行车，可我不得不让他失望了。 拓展：

be disappointed at/ about/ with/ in ...对….感到失望 be disappointed to do sth. 因做...而感到失望 be disappointed that 对…失望 应用

(1) If the result is ______, it will surely _____ all of us.

A. disappointed, disappoint B. disappointing, disappoint C. disappointed, disappointing D. disappointing, disappointed

答案 B 句意：如果这个结果是令人失望的，它必然会使我们所有人失望。

disappointing 令人失望的，修饰物；disappointed 感到失望的，修饰人；disappoint sb. 使某人失望

(2)To his ______, she couldn?t attend his birthday party.

A. surprise B. joy C. satisfaction D. disappointment 答案 D 句意：让他失望的是，她不能来参加他的生日聚会了。 To one?s disappointment 使某人失望的是… 拓展：

disappointed (a.) 失望的，沮丧的

disappointing (a.) 令人失望的，扫兴的

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disappointment (n.) 失望，令人失望的人或物 to one?s disappointment 使某人失望的是… 3．perform v. 表演，演出； 执行，履行； 拓展：

perform well/badly 表现好/差

perform one?s promise/ duty 履行诺言/职责 perform an experiment/ operation 做实验/手术 The students will perform an opera next Friday. 这些学生下周五将表演歌剧。

The doctor performed the operation successfully last night. 医生昨晚成功地进行了手术。 应用：

(1) the couple is said ____ in the city hall this Sunday. A. perform B. to perform C. to have perform D. to be performed (2) all the boys ____ on the stage come from our school. A. performing B. performed C. to be performed D. being performed 答案: (1)B (2)A 拓展：

performer (n) 表演者，演出人员

performance (n) 表演，演出；履行，执行；表现，成就 give/ put on a performance 演出，上演，表演节目 4. award (n) 奖，奖品

(v) 授予，颁发；奖励，判给

Gongli won the best actress award. 巩俐获最佳女演员。 拓展：

an award for … …的奖品

win/ receive/ gain/ get an award for … 因…而获奖 award sb. sth./ award sth. to sb. 授予某人某物 be awarded for … 因…而获奖 辨析：

award/ reward/ prize

(1). award的意思是“奖品”，多指因某些方面出众而被奖励或授予荣誉，往往强调荣誉而不在乎奖品的大小和奖金的多少，也常用于奖项的名称，表示概念意义上的“奖”；

(2).reward“报答，奖赏，赏金，悬赏金，酬金”，指对某人的服务或工作给予的报答，也指做了某些有意义的事而得到的赏金、酬金。

（3）prize意为“奖赏，奖品”，多指在各种比赛、竞赛、抽奖中获得的荣誉和奖赏或因某些特殊的功绩、贡献而获得的奖赏。 运用：完成下列句子

用award/ reward/ prize填空

(1) He received the Nobel Peace _____ for his years of hard work.

(2) We?ll offer a(n)_______of ten thousand dollars for information about the case.

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6. since引导的时间状语从句，译为“自从……”，主句常用现在完成时，从句常用一般过去时。

eg.

We have made many dumplings since we began to cook. 自从我们开始做饭起，我们已经包了许多饺子了。

We haven?t seen each other since we parted. 我们自从分手以后一直没见过面。

注：常用句型：It is +时间段+since从句 译为：自从……有多长时间了。

eg.

It is six years since she graduated from the university. 自从她大学毕业已有六年的时间了。

7. till和until引导的时间状语从句，译为“直到……为止”，not … till / until引导的时间状语从句，译为“直到……才”。前者强调主句动作的结束，用延续性动词，后者强调主句动作的开始，用点动词。

eg.

I will wait for my friend until / till he comes. 我要一直等到我朋友来。 We won?t start our discussion until / till he comes. 我们要等到他来了，再开始我们的讨论。 二、让步壮语从句:

though, although

注意： 当有though, although时，后面的从句不能有but，但是 though 和yet可连用 Although it's raining, they are still working in the field. 虽然在下雨，但他们仍在地里干活。 He is very old, but he still works very hard. 虽然他很老，但仍然努力地工作。

Though the sore be healed, yet a scar may remain. 伤口虽愈合，但伤疤留下了。 （谚语） 典型例题

1） ___she is young, she knows quite a lot.

A. When B. However C. Although D. Unless 答案：C。意为虽然她很年轻，却知道许多。 2) as, though 引导的倒装句

as / though引导的让步从句必须表语或状语提前（形容词、副词、分词、实义动词提前）。 Child as /though he was, he knew what was the right thing to do.

= Though he was a small child, he knew what was the right thing to do. 注意： a. 句首名词不能带任何冠词。

b. 句首是实义动词，其他助动词放在主语后。如果实义动词有宾语和状语，随实义动词一起放在主语之前。

Try hard as he will, he never seems able to do the work satisfactorily. = Though he tries hard, he never seems…

虽然他尽了努力，但他的工作总做的不尽人意。 3) ever if, even though. 即使

We'll make a trip even though the weather is bad. 4) whether…or- 不管……都

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Whether you believe it or not, it is true.

5) \疑问词\或\疑问词+后缀ever\ No matter what happened, he would not mind. Whatever happened, he would not mind. 替换： no matter what = whatever

no matter who = whoever no matter when = whenever no matter where = wherever no matter which = whichever no matter how = however

注意：no matter 不能引导主语从句和宾语从句。 （错）No matter what you say is of no use now. （对）Whatever you say is of no use now.

你现在说什么也没用了。(Whatever you say是主语从句) （错）Prisoners have to eat no matter what they're given, （对）Prisoners have to eat whatever they're given. 囚犯们只能给什么吃什么。

单项选择

1.—Coach, can I continue with the training? 【2012重庆30】

—Sorry, you can?t ________you haven?t recovered from the knee injury. A. until B. before C. as D. unless

2. It is hard for Greek government to get over the present difficulties ______ it gets more financial support from the European Union.

A. if B. unless C. because D. since

3. All the photographs in this book, _______ stated otherwise, date from the 1950s. 【2012陕西25】

A. unless B. until C. once D. if

4. A number of high buildings have arisen ____ there was nothing a year ago but ruins. 【2012山东32】

A. when B. where C. before D. until

5. Everything was placed exactly _____ he wanted it for the graduation ceremony. 【2012天津14】

A. while B. when C. where D. though

6. You can borrow my car ____ you promise not to drive too fast. 【2012江西31】 A. unless B. if C. in case D. as long as

7. Leave your key with your neighbor ____ you lock yourself out one day. 【2012辽宁30】 A. as long as B. even though C. in case D. as if

8. If you happen to get lost in the wild, you?d better stay ______ you are and wait for help. 【2012四川10】

A. why B. where C. who D. what

9. One?s life has value _____ one brings value to the life of others. 【2012江苏30】 A. so that B. no matter how C. as long as D. except that

10. This restaurant wasn?t_____ that other restaurant we went to. 【2012全国29】

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A. half as good as B. as half good as C. as good as half D. good as half as

11. One Friday, we were packing to leave for a weekend away _____ my daughter heard cries for help. （2011浙江卷4）

A. after B. while C. since D. when

12. Jack wasn?t saying anything but the teacher smiled at him _______ he had done something very clever. （2011湖南卷33）

A. as if B. in case C. while D. though

13. He had his camera ready ______he saw something that would make a good picture. (2011山东卷28)

A. even if B. if only C. in case D. so that

14. The little boy won?t go to sleep ______________his mother tells him a story. （2010 全国卷I 30）

A. or B. unless C. but D. whether

15. _____they decide which college to go to, students should research the admission procedures. （2010北京卷30）

A. As B. While C. Until D. Once 16. — Our holiday cost a lot of money.

— Did it? Well, that doesn`t matter ____you enjoyed yourselves.（2010江西卷22）

A. as long as B. unless C. as soon as D. though

17. The old man asked Lucy to move to another chair _______ he wanted to sit next to his wife. （2010辽宁卷29）

A. although B. unless C. because D. if

18. The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult. （2010山东卷28）

A. once B. when C. if D. unless

19. Today, we will begin _____we stopped yesterday so that no point will be left out. （2010重庆卷32）

A. when B. where C. how D. what

20. _____our manager objects to Tom's joining the club, we shall accept him as a member.（2010上海卷39）

A. Until B. Unless C If D. After 21. ---The film is, I have to say, not a bit interesting.

---Why? It?s ______ than the films I have ever seen.（2011?江西卷24）

A. far more interesting B. much less interesting C. no more interesting D. any less interesting

22. The new stadium being built for the next Asian Games will be ______ the present one. （2011陕西卷17）

A. as three times big as B. three times as big as C. as big as three times D. as big three times as

达标同步检测

Ⅰ.单词拼写

1. The unions began to become more and more ___________ (强大).

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2. The best ___________ (演出) in the concert was the boy who played the piano. 3. When you find a job，the first ___________ (印象) is very important. 4. They lost the game. What ___________ (令人失望的) news it is！

5. He made an exciting speech and the audience ___________ (反应) readily to his speech. 6. Earthquakes are e__________ difficult to predict.

7. He is very c__________— he writes poems and novels.

8. What are the differences between the American and British s________ of government？ 9. He was filled with a___________ at the way he had been treated. 10. The superstar made another new a ___________this year. Ⅱ．用方框中短语的正确形式完成句子。 react to; be used to doing sth; come out; be filled with; give a performance; worry about; make tea; warm up; pick up; be impressed by; at the end of; finish…with… 1. When will his new book_______?

2.The post office is ______________the street.

3. How did they _____________________your suggestion? 4. It?s foolish of you to be still __________________it.

5. He promised to ______________ a ticket of the CBA final for me. 6. Let the engine ______________before you drive off.

7. She _________ wonderful __________in the theater yesterday evening. 8. The singer ______________ being in the public eye so far.

9. It is custom to _______________ when the guests come to our home. 10. He dug out a huge box yesterday which _____________ gold and silver. 11. The manager __________greatly _______________ the young man?s talent. 12. The singer ___________ the concert ____________ her most famous song. Ⅲ. 根据汉语提示,完成下面句子。

怀特先生曾经生活在中国，所以他喜欢吃中国菜。

Mr. White _________ _______ live in China, so he _____ _______ _____ Chinese dishes. 她的新书将在下个月月底出版。

Her new book will _______ _______ ________ ______ _______ _______next month. 这种书在我们市很好卖。

This kind of books _________ _________ in our city. 4这些协议对买者和卖者都有影响。

These agreements ________ ________ _____ ______ both the buyers and the sellers. 5 你谈的情况给我们留下了深刻的印象。

We?re greatly ___________ _______ what you?ve told us. IV.单项填空

1. .Swan Lake is a famous ballet in four acts ________ on a German fairy tale. A. basing B. based C. bases D. to base 2. The dictionary is being printed and it will soon ________. A. turn out B. come out C. start out D. go out 3. (2010·山东卷)Sam________ some knowledge of the computer just by watching others working on it.

A．brought up B．looked up C．picked up D．set up

4. You can't borrow books from the school library ________you get your student card.

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A. before B. if C. while 5. --- How was Tom's work？

--- Oh， nothing could have been ________ .

D. as

A. more disappointing B. more disappointed C. the more disappointing D. very disappointing

6. You might work for an organization whose computer system is spread ________ the building. A. through B. by C. across D. throughout

7. The audience ________in different ways，some in suits，some i n dresses and some in jeans. A. is dressed B. are dressed C. is dressing D. are dressing 8. 1(2011·四川高考)As is reported，it is 100 years ________Qinghua University was founded. A. when B. before C. after D. since 9. (2011·福建高考)It was April 29，2011 ________Prince William and Kate Middleton walked into the palace hall of the wedding ceremony. A. that B. when C. since D. before 10. (2011·天津高考)________regular exercise is very important，it's never a good idea to exercise too close to bedtime. A. If B. As C. Although D. Unless 11. (2011·新课标全国卷)Try ________she might， Sue couldn't get the door open. A. if B. when C. since D. as

12. She spoke very confidently because she wanted to make a great on her employer. A．influence B．pressure C．impression D．effect

13. Such noble deeds of the doctors and nurses can?t be only with money. A．rewarded B．awarded C．praised D．valued 14. (2011·陕西卷) all of them are strong candidates，only one will be chosen for the post.

A．Since B．While C．If D．As

15. In my opinion，life in the twenty-first century is much easier than . A．that used to be B．it used to C．it was used to D．it used to be V.阅读理解

A

Probably no other musical instrument is as popular around the world as the guitar. Musicians use the guitar for almost every kind of music. Country and Western music would not be the same without a guitar. The traditional Spanish folk music called flamenco could not exist without a guitar. The sound of American blues music would not be the same without the sad cry of the guitar. And rock and roll music would almost be impossible without this instrument.

Music experts do not agree about where the guitar first was played. Most agree it is ancient. Some experts say an instrument very much like a guitar was played in Egypt more than thousands of years ago.

Some other experts say that the ancestor of the modern guitar was brought to Spain from Persia sometime in the 12th century. The guitar continued to develop in Spain. In the 18th century it became similar to the instrument we know today.

Many famous musicians played the instrument. The famous Italian violinist Niccolo Paganinni played and wrote music for the guitar in the early 19th century. Franz Schubert used the guitar to write some of his famous works. In modern times Spanish guitarist Andres Segovia helped

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make the instrument extremely popular.

In the 1930s， Les Paul began experimenting with ways to make an electric guitar. He invented the solid (实心的) body electric guitar in 1946. The Gibson Guitar Company began producing its famous Les Paul Guitar in 1952. It became a powerful influence on popular music. The instrument has the same shape and the same six strings (弦) as the traditional guitar， but it sounds very different.

1.The purpose of the first paragraph is to_______ . A. introduce different kinds of music B. introduce many instruments C. show the history of the guitar D. show the popularity of the guitar

2.Most music experts believe that the guitar _______ . A. was first played in Egypt B. has a long history C. is easy to play D. sounds sad

3.Who helped make the guitar an extremely popular instrument？ A. Niccolo Paganinni. B. Franz Schubert. C. Andres Segovia. D. Les Paul.

4.When was the electric guitar widely used in popular music？ A. From the early 1930s. B. From the early 1940s. C. From the early 1950s. D. From the early 1960s.

B

The following are the top animal moms. Octopus

The University of Michigan's Museum of Zoology said that an octopus mother lays about 50,000 eggs. For about 300 days， she stays with the eggs， cleans them and protects them. She does not leave to feed herself. Not surprisingly， this animal mom dies as soon as the eggs are hatched(孵出).

Crocodiles

A crocodile mother builds a nest， which she guards for over two months. When the eggs are ready to hatch， the young babies call out to their mother， who digs them out and helps them hatch. She then carries them gently in her mouth down to the water， where she will guard them for several months until they learn to hunt on their own. Bats

Scientists explain that bats become animal moms by hanging their heads up in a cave， giving birth. Catching the young bat before it can fall to the deadly ground below， she envelops it in a pouch (育儿袋).Bat moms may carry babies with them when feeding them for the first few days. As the little bats get bigger and heavier， bat moms help them hang on the wall of their caves and the moms often return to check and feed them. This process continues for about three months until the babies grow up and are able to fly on their own. Koalas

A koala baby climbs into its mother's pouch after it is born. It stays there for five months for its development. When the little koala is between five and eight months old，it leaves the pouch for short periods of time but returns for safety. Once it is too big to return to the pouch， it will climb

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onto its mother's back and ride there until it is about 12 months old. 5.What do we learn about octopus mothers？

A. They lay hundreds of eggs at one time.

B. They die of hunger after their eggs are hatched.

C. They and their husband take care of the eggs in turn. D. They feed their babies for a long time after they are born. 6.From the passage we know that crocodile mothers . A. spend little time with their eggs when they are being hatched B. keep their eggs in their mouth for several months to protect them C. protect their babies for several months after they are born D. immediately leave their babies after they are born

7.Bat mothers keep their babies in their pouch so as to . A. feed them anytime they want to B. teach them how to fly on their own C. teach them how to hunt on their own

D. protect them from falling onto the ground

8.A koala baby leaves its mom's pouch for the first time . A. immediately it is born

B. when it is about one year old C. about five months after it is born D. about ten months after it is born

参考答案 课前 自主预习

I 词汇认知 A. 单词识记

1. effect 2. extraordinary 3. creative 4. award 5. unclear 6. folk

7. powerful 8. base 9. disappoint 10. anger 11. perform performance performer 12. system 13. impress 14. throughout 15. album 16. audience B.根据句子的意思，写出本课的单词

1．is used to 2 came out 3 continued to give 4 filled with; full of; while 5 managed to 6 impressed 7 Although II根据课文内容翻译以下短语

1. be used to doing 2. come out 3.since then 4.win an award for 5. have a strong fan base 6. an extremely cold night 7. warm up 8. tell the story of 9. sing to 10. be greatly impressed by

语法精讲

答案：1-5BBABC 6-10DCBCA 11-15DACCD 16-20CDBBA 21-22BA

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1. powerful 2. performance 3. impression 4. disappointing 5. reacted 6. extremely 7. creative

8. systems 9. anger 10. album II. 用方框中短语的正确形式完成句子。

1.come out 2. at the end of 3. react to 4. worrying about 5. pick up 6. warm up 7. gave a, performance 8. has been used to 9. make tea 10. was filled with 11. was, impressed by 12. finished, with

Ⅲ. 根据汉语提示,完成下面句子。

1. used to, is used to 2. come out at the end of 3. sells well 4. have an effect on 5.impressed by IV. 单项填空

1---5 BBCAA 6---10DBDBC 11---15DCABD V阅读理解

语篇解读：本文主要讲作为乐器吉他流行的原因，以及吉他的历史和发展过程

1解析：段落主旨大意题。文章第一段重点介绍了吉他这种乐器在全世界的广泛运用。 答案：D

2 解析：细节理解题。根据文章第二、三两段可知大部分专家们认为吉他有悠久的历史。 答案：B

3 解析：细节理解题。根据文章最后一段中“The Gibson Guitar Company began producing its famous Les Paul Guitar in 1952.”一句可知电吉他的流行是在20世纪50年代。 答案：C

4 解析：细节理解题。根据第四段的内容可知是塞戈维亚使得吉他变得极为流行。 答案：C

语篇解读：本文向我们介绍了几种为宝宝们做出了巨大付出的动物妈妈。

5 解析：根据第二段的She does not leave to feed herself. Not surprisingly， this animal mom dies as soon as the eggs are hatched.可推断章鱼妈妈最后是因为饥饿而死的。 答案：B 6 解析：根据第三段的She then carries them gently in her mouth down to the water， where she will guard them for several months until they learn to hunt on their own.可知鳄鱼妈妈在宝宝出生几个月后会一直保护它们。 答案：C 7 解析：根据第四段的Catching the young bat before it can fall to the deadly ground below， she envelopes it in a pouch.可知蝙蝠妈妈们把宝宝装在育儿袋里是为了保护它们，避免它们掉到地上摔死。 答案：D

8 解析：根据末段的It stays there for five months for its development. When the little koala is between five and eight months old， it leaves ...可知考拉熊第一次离开育儿袋大概是在五个月大的时候。 答案：C

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