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托福阅读词汇题:disruption

2015-08-20 17:48:32来源:网络

  【托福阅读题型:disruption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:disruption

  【Paragraph 6】In view of these facts, scientists hypothesized that a single large asteroid, about 10 to 15 kilometers across, collided with Earth, and the resulting fallout created the boundary clay. Their calculations show that the impact kicked up a dust cloud that cut off sunlight for several months, inhibiting photosynthesis in plants; decreased surface temperatures on continents to below freezing; caused extreme episodes of acid rain; and significantly raised long-term global temperatures through the greenhouse effect. This disruption of food chain and climate would have eradicated the dinosaurs and other organisms in less than fifty years.(Extinction of the Dinosaurs)

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

  ○ exhaustion

  ○ disturbance

  ○ modification

  ○ disappearance

  答案见下一页:

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