In some flying insects,like moths,simple ears evolved—giving those creatures the ability to hear noises in the night and avoid becoming a bat's dinner.
Goerlitz's research suggests that bats found a way to get around moths that can hear. The sounds of other bats are ten to a hundred times louder than what the Western barbastelle bat of Europe can send out. Its quieter sounds are like a bat “whisper”.Moths can't hear this highpitched whisper until it's too late to get away.
To study the bats and moths,Goerlitz and his colleagues set up many microphones in an area where bats would pass through in the night and they found the result.
Goerlitz says it makes sense that bats would want to eat moths—though when he says it,he sounds a little batlike himself. “Moths are nice food,” he said,“They are big and fat and have a lot of energy.”
【解题导语】 本文是一篇说明文。欧洲有一种特殊的蝙蝠,不像一般的蝙蝠发出的高分贝的声音,它们发出的声音很低,这样就给他们捕食蛾子提供了一种优势技能。
1.The first paragraph serves as a(n)________.
A.warning
B.explanation
C.comment
D.complaint
答案 A [推理判断题。结合文章的第一段的第一句话“你们这些蛾子听着”和第一段的最后一句话“小心点,祝你们好运”等,可知这里是警告,故选A。B项是解释;C项是评论;D项是抱怨。]
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