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托福阅读修辞目的题:Glacier Formation

2015-08-12 17:07:57来源:网络

  【托福阅读题型:Glacier Formation修辞目的题】托福阅读中句子插入题是重要题型之一。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修辞目的题

  托福阅读修辞目的题:Glacier Formation

  【Paragraph3】Glaciers are part of Earth’s hydrologic cycle and are second only to the oceans in the total amount of water contained. About 2 percent of Earth’s water is currently frozen as ice. Two percent may be a deceiving figure, however, since over 80 percent of the world’s freshwater is locked up as ice in glaciers, with the majority of it in Antarctica. The total amount of ice is even more awesome if we estimate the water released upon  the hypothetical melting of the world’s glaciers. Sea level would rise about 60 meters. This would change the geography of the planet considerably. In contrast, should another ice age occur, sea level would drop drastically. During the last ice age, sea level dropped about 120 meters.(Glacier Formation)

  Why does the author consider the hypothetical melting of the world's glaciers?

  ○To contrast the effects of this event with the opposite effects of a new ice age

  ○To emphasize how much water is frozen in glaciers

  ○To illustrate the disastrous effects of a warming trend

  ○To support the claim that glaciers are part of Earth's hydrologic cycle

  答案见下一页:

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