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托福阅读插入题范例(22)

2015-08-03 12:00:09来源：网络

　　【托福阅读插入题范例(22)】托福阅读插入题本质是考察考生的关联句子能力，语法及逻辑关系。新东方在线托福网为大家带来托福阅读插入题范例(22)，希望对大家托福备考有所帮助。更多精彩尽请关注新东方在线托福网!

　　查看全部：托福阅读插入题范例

　　托福阅读插入题例题

　　例题22：

　　Much of the water in a sample of water-saturated sediment or rock will drain from it if the sample is put in a suitable dry place.█ But some will remain, clinging to all solid surfaces.█ It is held there by the force of surface tension without which water would drain instantly from any wet surface, leaving it totally dry.█ The total volume of water in the saturated sample must therefore be thought of as consisting of water that can, and water that cannot, drain away.█

　　The relative amount of these two kinds of water varies greatly from one kind of rock or sediment to another, even though their porosities may be the same. What happens depends on pore size. If the pores are large, the water in them will exist as drops too heavy for surface tension to hold, and it will drain away; but if the pores are small enough, the water in them will exist as thin films, too light to overcome the force of surface tension holding them in place; then the water will be firmly held.

　　Look at the four squares [█] that indicate where the following sentence could be added to the passage.

　　What, then, determines what proportion of the water stays and what proportion drains away?

　　Where would the sentence best fit? Click on a square to add the sentence to the passage.

　　答案见下一页>>>>


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　　更多托福阅读题型相关知识点，尽请关注>>>>新东方在线托福阅读！

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