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1、高三英语导学案 编制人 颜亨政 陈天赋 审核人 使用时间 2011-01-21 编号 GSYYFXSB2-1 高三英语教学案第 1 页班级： 组别： 姓名： 教师评价：_Unit 9 Saving the earth (Book 2)训 练 案 1(答案)一、完形填空Trees are useful to man in three very important ways. They provide him with wood and other 1 ; they give him shade; they help to prevent drought(干旱)and 2 .Unfortunate
2、ly, in many 3 of the world, man has not realized that the third of these services is 4 important.Two thousand years ago a rich and powerful country cut down its trees to 5 warships, with which to gain itself an empire. It gained the empire, but, 6 its trees, its soil became hard and 7 . When the emp
3、ire fell to 8 , the home country hound itself faced by floods and starvation. Even where a government realizes the importance of a plentiful supply of trees, it is difficult for 9 to persuade the villager to see this. The villager wants wood to cook his food 10 ; and he can earn money 11 making char
4、coal or selling wood to the townsman. He is usually too lazy or too careless to plant and look 12 new trees. So, unless the government has a good system of control, or can 13 the people, the forests will slowly disappear.This does not only 14 that the villagers sons and grandsons have 15 trees. The
5、results are even more serious; for where 16 are trees, their roots break the soil upallowing the rain to sink inand also bind(结合)the soil, thus preventing its 17 washed away easily, but where there are no 18 , the rain falls on hard ground and carrying 19 with it the rich top soil, in which crops 20
6、 so well. Well all the topsoil is gone, nothing remains but worthless desert.1A. uses B. products C. production D. result高三英语导学案 编制人 颜亨政 陈天赋 审核人 使用时间 2011-01-21 编号 GSYYFXSB2-1 高三英语教学案第 2 页解析 树木给人类提供木材和其他的产品（products） ，而production 具有抽象的含义，指生产过程。答案 B2A. floods B. soil C. air D .sunlight解析 与干旱相对，即涝灾（fl
7、ood） ，也可以后文得到证实。答案 A3A. corner B. part C. place D. parts解析 若用 place，需用复数形式。答案 D4A. the most B. the more C. most D. much解析 三者以上最高级，the 不可以省略。答案 A5A. set B. build C. put D. organize解析 造战船，要用 build 或 set up.答案 B6A. with B. by C. on D. without解析 without its trees 没有了树。答案 D7A. poor B. fine C. beautiful D
8、. pretty解析 根据常识，没有了树，土壤会变得贫瘠（poor） 。答案 A8A. break B. unite C. bits D. pieces解后 fall to pieces 是习语，意为“四分五裂”。答案 D9A. it B. them C. he D. they解析 it 代指前句所指的 government。答案 A10A. with B. by C. on 高三英语导学案 编制人 颜亨政 陈天赋 审核人 使用时间 2011-01-21 编号 GSYYFXSB2-1 高三英语教学案第 3 页D. 不填解析 with, 介词，表示 “用”，此处其宾语 wood 已提前。答案 A
9、11A. with B. of C. by D. to解析 by 表示抽象地通过某种方式或手段。答案 C12A. after B. for C. at D. out解析 look after 照看，照料答案 A13A. ask B. educate C. want D. remove解析 educate 教育（人民） 。答案 B14A. mean B .refer C .know D. realize答案 A15A. a few B. fewer C. a little D. little解析 有比较含义，较少，用 fewer。答案 B16A. they B. we C. here D. th
10、ere解析 there he 句型，表示“有”。答案 D17A. been B. being C. is D. was解析 有在 prevent 后，动名词 being 可表被动，其逻辑主语为 its.答案 B18A. water B. trees C. soil 高三英语导学案 编制人 颜亨政 陈天赋 审核人 使用时间 2011-01-21 编号 GSYYFXSB2-1 高三英语教学案第 4 页D. air答案 B19A. away B. off C. with D. by解析 carry away 带走，习惯用语。答案 A20A. come B. grow C. get D. turn解析
11、 grow 此处为不及物动词， “生长”。答案 B二、阅读理解Our surroundings are being polluted faster than nature and mans present efforts cannot prevent it. Time is bringing us more people, and more people will bring us more industry, more cars, larger cities, and the growing use of man made materials.What can explain and sol
12、ve this problem? The fact is that pollution is caused by manby his desire(欲望)for a modern way of life. We make “increasing industrialization(工业化)”our chief aim. So we are often ready to offer everything; clean air, pure water, good food, our health and the future of our children. There is a constant
13、 flow of people from the countryside into the cities, eager for the benefits of our modern society. But as our technological achievements have grown in the last twenty years pollution has become a serious problem.Isnt it time we stopped to ask ourselves where we are goingand why? It makes one think
14、of the story about the airline pilot who told his passengers over the loudspeaker. “Ive some good news and some bad news. The good news is that were making rapid progress at 530 miles per hour. The bad news s that were lost and dont know where were going.” 高三英语导学案 编制人 颜亨政 陈天赋 审核人 使用时间 2011-01-21 编号 GSYYFXSB2-1 高三英语教学案第 5 页The sad fact is that this becomes a true story when spoken of our modern society.1Man cannot prevent the world from being pollut
