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1、 Unit 22Environmental Protection索取，索取，再索取。孩子和母亲的关系似乎永远都是这一种形式。人类和自然母亲的关系又何尝不是如此呢？Nature Is Our Mother Take.Take.Take.The relationship between a child and a mother always seems to follow such a pattern.Like a child endlessly asking，we humans，throughout history，have been continually demanding what we
2、desire from nature.We enjoy the comfort and beauty of our furniture，yet we never bother to think about the serious soil erosion caused by deforestation.We take it for granted that we must warm ourselves in winter times，yet we seldom realize all the prosperity from the development of modern industry，
3、yet few would give the slightest consideration to the global air and water pollution caused by industrial wastes.Our ruthless exploitation has permanently impaired our mother earth.Now，standing here at the threshold of the 21st century，we cannot help thinking of our posterity (后代)Nature is not only
4、the mother of the present generation，but also the mother of the generations to come.How severely our posterity will criticize us if we leave them a barren and lifeless mother？How much more they will appreciate us if we give them a world of harmony to inherit？Let us start respectingand caring for nat
5、ure from now on.Let us start the campaign of creating a mutually (互利的) beneficial relationship between people and nature right from this moment.With this new start，we have no reason to doubt that our children，and our childrens children will live in a brand new age of green trees，clean air，crystal wa
6、ter，blue sky and an even more promising world!1deforestation n滥伐森林2take it for granted(that) 认为是，理所当然 3prosperity n. 繁荣；兴旺，昌盛4at the threshold of 在的开始 5inherit vt.&vi. 继承1What will be caused with the development of modern industry?_2What will we do if we want our next generation to appreciate us?_【答
7、案】1.The global air and water pollution will be caused by industrial wastes.2We try to give them a world of harmony to inherit.Section Warmup & Global WarmingPreparing根据提示写出下列单词1_vt.使困住2_n. 顾问3_n. 保护区 4_n. 原则，道德准则5_n. 保护 6_n. 一致的意见 7_prep. 超出 8_adj. 有关的 9_n. 农业 10_n. 巧合 11_vt. 迫使(某人)陷入不幸的境地 12_adj. 联
8、邦的 13_vt.&vi. 牺牲；献出 14_vt. 主张，提倡 15_vt. 回收利用 16_n. 代替品，代用品 17_vt. 威胁 【答案】1.trap2.consultant3.reserve 4principle5.conservation6.consensus 7beyond8.relevant9.agriculture 10coincidence11.condemn12.federal 13sacrifice14.advocate15.recycle 16substitute17.threaten根据提示补全下列短语1be harmful _对有害2._risk 有危险，处于危险
9、中3._number of 一些4_ones control 超出的控制；不受的控制5speed_ 加快速度6look_ 展望未来7refer_ 指；提及；参考8_turn 依次，轮流9lead_ 引起，导致10_a result of 由于，因为11_action 采取行动12switch_ 关掉13add_ 把加起来14ahead_ 在的前面【答案】1.to2.at3.a4.beyond5.up 6ahead7.to8.in9.to10.as11.take 12off13.up14.of根据提示补全下列教材原句1._Without_these_naturally_occurring_gas
10、es，the suns rays would_bounce_back_into space leaving the Earth cold and impossible to live on.如果没有这些自然产生的气体，太阳光线将会被反射回太空中，使得地球将处于寒冷中而不适合生命的生存。2The amount of carbon dioxide in the atmosphere has risen by more than 30% in the last 250 years with_half_of_this_increase_occurring_since_1960.在过去的250年里，大气
11、中的二氧化碳含量已经增加了30%以上，而其中一半是在1960年以后增加的。3Given_this_data，it seems that the link between human activities and rising global temperatures is not merely a coincidence.考虑到这个数据，看起来人类活动与正在上升的全球温度之间的联系就不仅仅是一个巧合了。4The water level has risen so high in several places that many homes are at risk from flooding.几个地
12、方的水位上涨得那么高，以至于许多房子处在被淹没的危险中。阅读P6课文，并从四个选项中选择最佳答案1.The main purpose of the first paragraph is _.Ato introduce the topic of global warming to the readersBto remind the readers of human activities in the pastCto introduce the greatest trouble in the futureDto mention the process of global warming in hi
13、story2Which of the following is TRUE about greenhouse gases?AGreenhouse gases will only do us harm.BGreenhouse gases do more harm than good to humans.CGreenhouse gases do more good than harm to humans.DProper greenhouse gases are quite necessary to the earth.3Which of the following is NOT mentioned as the result of global warming?ATyphoons.BSerious diseases.CPolar ice melting.DHeat waves.4Which is one of the biggest environmental problems in the 21st cen
