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托福阅读句子插入题:Swimming Machines

2015-08-14 12:12:17来源:网络

  【托福阅读题型:Swimming Machines句子插入题】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句子插入题

  托福阅读句子插入题:Swimming Machines

  【Paragraph 6】■Because they are always swimming, tunas simply have to open their mouths and water is forced in and over their gills. ■Accordingly, they have lost most of the muscles that other fishes use to suck in water and push it past the gills. ■In fact, tunas must swim to breathe. ■They must also keep swimming to keep from sinking, since most have largely or completely lost the swim bladder, the gas-filled sac that helps most other fish remain buoyant. (Swimming Machines)

  Look at the four squares [■l that indicate where the following sentence can be added to the passage. Consequently,

  tunas do not need to suck in water.

  Where would the sentence best fit?

  答案见下一页:

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