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托福阅读句子插入题:Begging by Nestlings

2015-08-20 17:29:14来源:网络

  【托福阅读题型:Begging by Nestlings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:Begging by Nestlings

  【Paragraph 1】Many signals that animals make seem to impose on the signalers costs that are overly damaging. ■A classic example is noisy begging by nestling songbirds when a parent returns to the nest with food. ■These loud cheeps and peeps might give the location of the nest away to a listening hawk or raccoon, resulting in the death of the  defenseless nestlings. ■In fact, when tapes of begging tree swallows were played at an artificial swallow nest containing an egg, the egg in that “noisy” nest was taken or destroyed by predators before the egg in a nearby quiet nest in 29 of 37 trials. ■(Begging by Nestlings)

  Look at the four squares [■] that indicate where the following sentence could be added to the passage.

  The cheeping provides important information to the parent, but it could also attract the attention of others.

  Where would the sentence best fit

  答案见下一页:

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