同时应当为侨商归国工作、创业和生活提供更加便捷、适宜的环境，使得侨商归国后能够安心并专心于事业发展，提高海外高层次人才回国创新创业的热情Unit 8 A green world教学目标知识与能力：Master the new words and expressions ,some main sentences in this unit.过程与方法：Through the test, understand the Ss condition of mastering the content.情感态度与价值观：To educate the Ss to finish the test paper by themselves.教学重点难点Master the new words and expressions ,some main sentences in this unit.教 学 活 动 内 容 一、单项填空(10分) ( ) 1. -Many trees _ last year. -Yes, we must do something to stop people from doing that. A. are cut down B. have cut down C. were cutting down D. were cut down( ) 2. -May we leave the classroom now? -No, you _. You _ to leave until the bell rings. A. cant; arent allowed B. mustnt; are allowed C. neednt; are allowed D. neednt; arent allowed( ) 3. -Which sport are you in at the, school sports meeting? -No decision yet. I think it _ after discussing it with Mr Zhao. A. was decided B. will be decided C. will decide D. is decided( )4. -Would you like _ the environment? -Yes, Id love to. A. help protect B. helping protecting C. to help protecting D. to help protect( ) 5. The heavy rain _so many traffic accidents on the highway last Monday. A. made B. allowed C. caused D. let( )6. If drivers are careful enough, most accidents _. A. can prevent B. can be prevented C. need prevent D. will prevent( )7. A lot of new roads _ in order to develop the villages in the next five years. A. are going to build B. is built C. will build D. are going to be built( )8. The visitors are very _ to see so many changes _. A. surprised; are taken place B. surprising; take place C. surprised; take place D. surprising; are taken place ( )9. We can ask people _ the environment by _ them the beauty of nature. A. protecting; showing B. to protect; showing C. to protect; to show D. protecting; to show ( )10. -Youd better not eat too much salt. Its bad for your health. - _. A. Not at all B. Youre welcome C. It doesnt matter D. Thanks for your advice ( )1 l. -Put _ waste bag into the dustbin, please. -Its not _ waste bag. Its my shopping bag. A. the; a B. a; the C. a; a D. /; the( )12. The factory _ its waste into the river, but now it recycles the waste in a new way. A. used to put B. is used to put C. used to putting D. is used to putting( )13. -We must act now because time is _. -Yes. Lets start. A. coming out B. giving out C. cutting out D. running out( ) 14. -You _ be happy with the strong public support youve received. -Yes, youre right. Im really excited. A. must B. may C. can D. need( ) 15. -Whats the name of the song you sang just now? It _ beautiful. -It is When Christmas Comes to Town . A. was sounded B. sounded C. was heard D. heard二、完形填空（10分）The world is divided into two parts. One half of the world is rich and the 16 half is poor. In the poor part, a lot of people 17 get enough to eat. When they are ill, none of the hospitals can 18 them because they have not money. In the rich part, a lot of people eat too much. For example, a dog 19 a cat in North America eats better than a child in the poorer countries. The poor countries have some 20 problems. Sometimes the land is too poor to grow 21 on. People there have neither rich land nor enough water. The land can be made better, 22 a lot of things must be done. The people must be taught and water must be found.But rich countries have 23 , too. There are not always good places to live in. Sometimes the air is not clean and the rivers are too 24 to swim in or to drink. The roads and streets are full of people and buses. Cars and buses have to move 25 . There is too much noise. Something must be done about these problems. The air and the rivers must be cleaned and be kept clean. More houses have to be built. But these cant be done easily.( ) 16. A. other B. another C. others D. rest ( )17. A. usually B. always C. often D. never ( ) 18. A. worry B. receive C. show D. protect( ) 19. A. like B. as C. or D. and( ) 20. A. difficult B. interesting C. important D. different ( ) 21. A. everything B. something C. nothing D . anything ( ) 22. A. until B. and C. but D. since ( ) 23. A. problems B. pollution C. population D. production (