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新托福阅读词汇150题(135)：derive&gain

2015-08-18 10:53:39来源：网络

　　【新托福阅读词汇150题(135)：derive&gain】新托福TPO阅读中，词汇题是重要托福阅读题型。托福阅读词汇题做题需要考生掌握一定的词汇量和做题技巧。本文中新东方在线托福网汇总了新托福阅读词汇150题：derive&gain。

　　Paragraph 4: Given that predators can make it costly to beg for food, what benefit do begging nestlings derive from their communications? One possibility is that a noisy baby bird provides accurate signals of its real hunger and good health, making it worthwhile for the listening parent to give it food in a nest where several other offspring are usually available to be fed. If this hypothesis is true, then it follows that nestlings should adjust the intensity of their signals in relation to the signals produced by their nestmates, who are competing for parental attention. When experimentally deprived baby robins are placed in a nest with normally fed siblings, the hungry nestlings beg more loudly than usual—but so do their better-fed siblings, though not as loudly as the hungrier birds. 【TPO11- Begging by Nestlings】

　　8. The word “derive” in the passage is closest in meaning to

　　○ require

　　○ gain

　　○ use

　　○ produce

　　答案见下一页：

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