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托福阅读词汇题:consumed

2015-08-17 16:24:21来源:网络

  【托福阅读题型:consumed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:consumed

  【Paragraph 4】This impact released an enormous amount of energy, excavating a crater about twice as large as the lunar crater Tycho. The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface. Such a quantity of material would have blocked the sunlight completely from reaching the surface, plunging Earth into a period of cold and darkness that lasted at least several months. The explosion is also calculated to have produced vast quantities of nitric acid and melted rock that sprayed out over much of Earth, starting widespread fires that must have consumed most terrestrial forests and grassland. Presumably, those environmental disasters could have been responsible for the mass extinction,including the death of the dinosaurs.(Meteorite Impact and Dinosaur Extinction)

  The word “excavating” in the passage is closest in the meaning to

  ○ digging out

  ○ extending

  ○ destroying

  ○ covering up

  The word “consumed” in the passage is closest in the meaning to

  ○ changed

  ○ exposed

  ○ destroyed

  ○ covered

  答案见下一页:

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