2. 外语
  3. The main topic of the passage is the ______. According to the passage the primary function of allelomimetic behavior in bird is

The main topic of the passage is the ______. According to the passage the primary function of allelomimetic behavior in bird is

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问题 The main topic of the passage is the ______.
According to the passage the primary function of allelomimetic behavior in bird is to ______.
选项 A、defend nests against predators
B、look at each other
C、locate prey
D、warn against predators
答案D
解析 此题考查学生辨认某些事实的能力。根据短文，鸟类遗传模仿行为的主要功能是警惕掠食者。如果选A保护鸟巢不受掠食者侵扰。主次颠倒，不合题意。主要功能是保护鸟类本身，而不是鸟巢。如果选B相互对视，allelomimelic behavior更没有这种功能，离题太远。如果选C放置被捕食的动物。文不对题，不可取。
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大学英语六级

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