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托福阅读词汇题:preposterous

2015-08-25 17:55:51来源:网络

  【托福阅读题型:preposterous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:preposterous

  【Paragraph 3】Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild. Furthermore, he noticed that as they fluttered around in the cage, they often launched themselves in the direction of their normal migratory route. He then set up experiments with caged starlings and found that their orientation was, in fact, in the proper migratory direction except when the sky was overcast, at which times there was no clear direction to their restless movements. Kramer surmised, therefore, that they were orienting according to the position of the Sun. To test this idea, he blocked their view of the Sun and used  mirrors to change its apparent position. He found that under these circumstances, the birds oriented with respect to the new "Sun." They seemed to be using the Sun as a compass to determine direction. At the time, this idea seemed preposterous. How could a bird navigate by the Sun when some of us lose our way with road maps? Obviously, more testing was in order.(Orientation and Navigation)

  ! The word “preposterous” in the passage is closest in meaning to

  ○ unbelievable

  ○ inadequate

  ○ limited

  ○ creative

  答案见下一页:

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