Unit 4 单元练习题I. 单选（选出最佳答案）(共20分)1. The children are very quiet; I wonder what they are up____ .A againstB forC toD with2. the development of science and technology, more and more dreams will come true.A. WithB. ToC. AsD. Of3. The girl was last seen near the Central Park.A. missing; playingB. missing; playedC. missed; playingD. missed; played4. My brother is interested in history in general. He is reading a book about history of America recently.A. the; aB. /; theC. the; /D. /; a5. late tomorrow morning, you should set off on your own.A. Should I arriveB. I should arriveC. Had I arrivedD. I had arrived6. Can you tell me a situation these phrases are used?A. whichB. whereC. thatD. when7. The expression on his face suggested that the football match was .A. excited; excitedB. excited; excitingC. exciting; excitedD. exciting; exciting8. This website is very useful. It has information that we need.A. manyB. littleC. a fewD. plenty of9. Today more than 80 percent of the Australians in the six big citiesaround the coast.A. live; locatingB. living; locatingC. living; locatedD. live; located10. The accident could have been much worse; fortunately no ___ was done to the boy.A. stressB. harmC. needD. help11. ----I feel like a film this evening.---- But I would like the football match on TV this evening.A. seeing; watchingB. to see; to watchC. seeing; to watchD. to see; watching12. Immediate actions should be so as to protect the animal species in danger.A. madeB. takenC. doneD. built13. ------ is the population of the area ?----- About 4 million. Two third of the population farmers.A. How many, isB. How much, areC. What, isD. What, are14 .My sister a good chance to go abroad for further study of English.A. was providedB. was presentedC. was suppliedD. was offered15 .What effects will the Olympic Games have the host city?A. inB. offC. onD. for16. --- What did you suggest___ , Joan?--- I suggested ___ her father for his opinion.A. her doing, to ask B she did; asking C. her to do; to ask D. she do; asking17. You are rejected because your major( 专业) is not fit for the job we offer. , you lack（缺乏）the related working experience.A. As a resultB. What’s moreC. In other wordsD. In a word18. There is no from my bedroom window except for some factory chimneys.A. viewB. pictureC. sightD. look19. I think my duty to help people in trouble.A. thatB. itC. whatD. which20. --- Would you like to stay at home or go out for a walk?---- . It’s all the same to me.A. All right.B. That’s all right.C. Don’t mention.D. It’s up to you.II．单词拼写：根据首字母提示或汉语意思填上合适的单词。

1. His bad reading habits have a_______ his eye-sight.2. The serious earthquake caused the total _________(毁灭) of a new town.3. A few minutes later, the old man ___________(消失) in the crowds.4. He o______ me 300 dollars for that television.5. You are informed (通知) (正式) that you have been employed.6.He has ________(安排) for me to attend the meeting.7. His accent s________ he was a stranger here.8. Scientists often do s________ research.9. He ________(拒绝) a request from the old man.10. It is said that this _________(罪犯) will be put into prison for setting fire.11. There are all kinds of _____________(娱乐活动) for children on Children’s Day.12. The Hope p_________ has does a lot of work to help those poor students with their studies.13. The old man made a very good _________(建议)at the meeting last week.14. This is a h_______ event of China.15. Beijing is our final ___________(目的地)16. I know the place well, so let me be your g________.17. My hometown is __________(坐落在) by the Changjiang River.18. I want to own a house at the ___________(海滨).19. They lived in the ________(市郊)20. They are on a wedding __________(旅游).III. 单句改错：（只改动//去掉//添加一个单词）（共15分）1. The group is made up of ten students. That is, the group consisted of ten students.2. The day they looked forward to coming at last.3. Can you imagine what difficulty I had settled the problems?4. They spent the whole night locking in the room.5. It is not surprised that he didn’t win the prize.6. New Zealand was the first country to having the eight-hour work time.7. They have got in touch with each other for 3 years.8. Paul doesn’t have to be made learn. He always works hard.9. They two strangers are talking warmly as if they are old friends.10. My suggestion is that a plan for study will be made at first.11. Though this is her first film, everybody thinks high of her acting skills.12. Suddenly, the two plates jumped and an earthquake is happen.13. He hopes his dream that he will become an actor will be come true.14. He is lying on the grassland, with his eyes focusing on the blue sky.15. He told her whether she could repeat the address or not.IV. 完成句子，把下列句子改为同义句:1. What do you think he is busy with now?-----What do you think he now?2. Learning every subject well is greatly important to us all.----Learning every subject well is to us all.3. You won’t go. She will be unhappy. (if)4. His brother advised him to settle down in New York.-----His brother suggested that in New York.5. As he is in poor health, he won’t go abroad with us.-----If he in good health, he go abroad with us.----- he in good health, he go abroad with us.6. Sydney is a beautiful city. It has a population of just under three and a half million people.(with)____________________________________________________________________ 7. Auckland is the largest city in New Zealand. It is also an important center for business and industry. (as well as)V. 阅读（共10分）AHow much rain has fallen on the earth in the past? Man has not always kept weather records. Because scientists need a way to learn about past rainfall, they study the tree rings.A tree’s trunk (树干) keeps growing year by year. Under its bark (树皮), a tree adds a layer of new wood each year it lives. If you look at a tree stump, you can see the layers. They are called annual ring (年轮).On some trees, all of the rings are of the same width. But the ponderosa(美国黄松) that grows in the American southwest have rings in different widthes. The soil in he southwest is dry. The pines depend on rainfall for water. In a year of good rainfall, they form wide rings. In a dry year, they form narrow ones.Scientists do not have to cut down a pine to study its rings. With a special tool, they remove a narrow piece of wood from the trunk without harming the tree. Then they look at the width of each ring to see how much rain fell in the year it formed.Some pines are hundreds of years old and have hundreds of rings. These rings are from an annual record of past rainfall in the southwest.1. We could infer from the passage that ______.A. a tree grows faster when it has a lot of waterB. scientists cut down trees to study tree ringsC. pine trees form rings of he same width every yearD. the ponderosa grows in he southeast2. A tree grows a new layer of wood _____.A. each weekB. whenever it rainsC. every yearD. every season3 On the whole, the passage is about _____.A. why the tree trunks grow biggerB. why scientists study tree ringsC. trees that lived hundreds of years agoD. the ponderosa in the US4. The scientists _____ to know how much rain fell in a certain area in the past.A. climbed up the treeB. moved the pine treeC. removed a piece of woodD. studied the width of he tree rings5. Which of he following is true according to the passage?A. Young trees have fewer annual rings than old one.B. The trunk of a tree never changes in size.C. Trees in the southwest do not need rain.D. Soil in the southwest is fit for the growth of trees.BFinders, Keepers?I worked for a short time as a casher(出纳员) at a restaurant a few months ago.I also helped clear off the tables when it was especially busy. One night, just before Christmas, I found a large black wallet on the floor near one of the tables. I guess I should have checked it to find out who was the owner, but I was busy at the time. Also, I imagined that if the wallet contained anything Valuable, the owner would be back. Sure enough, an hour later a man came up to the counter(柜台) and asked if anyone had found a wallet, I asked him to describe the lost wallet, and after he described it exactly, I gave him the wallet. He expressed his sincere thanks when I handed it to him. He asked me if I had opened it, and when I told him "No", he opened it right away and showed that it contained nearly $800 in cash(现金) . I gasped(叹息) as he took out a twenty-dollar bill and handed it to me ."A reward for your honesty," he said and then turned and walked away.Thinking about it later, I began wondering whether I would have been so honest if I had known what was in the wallet! I think that if there had been no Way to find the owner and no one had returned to claim (认领)it, I might have kept it, But it also came into my mind that I had in fact saved someone’s Christmas plans by finding and returning the wallet. The good feeling it gave me was worth more than anything money could buy.6. This story happened in a restaurant.A. one night in NovemberB. one day in DecemberC. a few weeks before ChristmasD. a couple of days before December 257. Which of the following is true?A. The owner of the wallet found a twenty-dollar bill gone.B. The writer wasn’t surprised as the man gave him a reward.C. Nothing in the wallet was missing.D. The man was extremely surprised when he got his wallet back.8. The writer returned the wallet to the owner becauseA. he thought Christmas was comingB. being honest, he didn’t care much about moneyC. the owner came back too soonD. he didn’t know that it contained so much money9. The title of the passage "Finders Keepers?" implies that the saying, "Finderskeepers, losers weepers"A. is not always trueB. is proved in this storyC. requires an answerD. is still a question10. Which of the following is NOT true?A. He accepted a reward of $20B. He didn’t return the wallet until the owner returned.C. He regretted that he had returned the wallet.D. He felt very happy after he returned the wallet.CAn Introduction to IcelandGeographyIceland, an island about the size of Kentucky, lies in the north Atlantic Ocean and east of Greenland. It just touches the Arctic Circle(北极圈). ___11___ .More than 13% of it is covered by snowfields and glaciers( 冰川), and most of its people live in the 7% of the island that is near the sea and suitable for crops to grow. The Gulf Stream keeps Iceland’s climate warmer than what one would expect from an island so near the Arctic Circle.HistoryThe earliest settlers of Iceland were Irish. In 1262-1264, Iceland came under Norwegian rulebut was passed to Danish control through the unification of the kingdoms of Norway, Sweden, and Denmark in 1397.In 1918, Denmark recognized Iceland, through the Act of Union, as a separate state. It remained, however, under the Danish control in name. ___12___.During the German occupation (占领)of Denmark in World War II, British, then American, troops（军队）occupied Iceland and used it for an air base. EconomyIceland’s economy depends highly on exporting (出口). Marine products(海产品) make up the majority of goods exported. Other important exports include machinery and electronic equipment for the fishing industry, software, and woolen goods. ___13___ .The main imports are petroleum products, food and textiles. Iceland’s main trade partner is Germany.Tourism___14___ In the last decade, tourism has grown by 11% on average each year. Around 360,000 people visited Iceland in 2004, but since then the number has increased greatly and the number was 485,000 in 2007 and over 500,000 in 2008. Tourist attractions in Iceland mainly come from its special geological landscape, including glaciers, waterfalls, hot springs and lakes. ___15__ The northern lights also can be seen there due to Iceland’s location and this attracts many visitors.根据短文内容，从下面的选项中选出能填入空白处的最佳选项。