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托福阅读词汇题：this problem

2015-08-14 14:50:47来源：网络

　　【托福阅读题型：this problem词汇题】托福阅读中词汇题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

　　查看全部：托福阅读题型分类练习之词汇题

　　托福阅读词汇题：this problem

　　【Paragraph 5】Large wind farms might also interfere with the flight patterns of migratory birds in certain areas, and　they have killed large birds of prey (especially hawks, falcons, and eagles) that prefer to hunt along the same ridge lines　that are ideal for wind turbines. The killing of birds of prey by wind turbines has pitted environmentalists who champion　wildlife protection against environmentalists who promote renewable wind energy. Researchers are evaluating how　serious this problem is and hope to find ways to eliminate or sharply reduce this problem. Some analysts also contend that the number of birds killed by wind turbines is dwarfed by birds killed by other human-related sources and by the　potential loss of entire bird species from possible global warming. Recorded deaths of birds of prey and other birds in　wind farms in the United States currently amount to no more than 300 per year. By contrast, in the United States an　estimated 97 million birds are killed each year when they collide with buildings made of plate glass, 57 million are killed on highways each year; at least 3.8 million die annually from pollution and poisoning; and millions of birds are　electrocuted each year by transmission and distribution lines carrying power produced by nuclear and coal power plants.　　(Electricity from Wind)

　　The phrase “this problem” in the passage refers to

　　○Interference with the flight patterns of migrating birds in certain areas

　　○Building ridge lines that are ideal for wind turbines

　　○The killing of birds of prey by wind turbines

　　○Meeting the demands of environmentalists who promote renewable wind energy

　　! The phrase “amount to” in the passage is closest in meaning to

　　○can identify

　　○change

　　○are reduced by

　　○total

　　答案见下一页：

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