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托福阅读句子简化题：Orientation and Navigation

2015-08-17 15:48:11来源：网络

　　【托福阅读题型：Orientation and Navigation句子简化题】托福阅读中句子简化题是重要题型之一。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简化题

　　托福阅读句子简化题：Orientation and Navigation

　　【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 thenew "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)

　　! Which of the sentences below best expresses the essential information in the highlighted sentence in the　　passage? Incorrect choices change the meaning in important ways or leave out essential information.

　　○ Experiments revealed that caged starlings displayed a lack of directional sense and restless movements.

　　○ Experiments revealed that caged starlings were unable to orient themselves in the direction of their normal　migratory route.

　　○ Experiments revealed that the restless movement of caged starlings had no clear direction.

　　○ Experiments revealed that caged starlings' orientation was accurate unless the weather was overcast.



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