37.How do butterflies hear sounds?

　　A. Using their feet to sense the vibration of things

　　B. Using their ears to listen directly

　　C. Using their wings to sense the sound vibrations

　　D. Using their antennae to judge the sound

　　38.Why do female adult butterflies carefully choose the host plants?

　　A. To find highqualified honey.

　　B. To have a good place for living.

　　C. To make it easier for them to hide from the enemies.

　　D. To find a proper place for their eggs.

　　39.What does the last paragraph imply?

　　A. There’s a long way to understand butterflies well

　　B. Butterflies give great help to human beings

　　C. Butterflies are the most beautiful insects in the world

　　D. Butterflies possess more senses than humans

　　40.The text mainly focuses on ________.

　　A. butterflies' living habits

　　B. butterflies' beauty

　　C. butterflies' daily activities

　　D. butterflies' senses

　　37.C细节理解题。根据倒数第二段“Instead they “hear” sounds through their wings by sensing changes in sound vibrations.”可知，蝴蝶没有耳朵，它们依靠翅膀来感知声音的震动，故选C。

　　38.D细节理解题。根据第四段“Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs.”可知，一些雌性蝴蝶精心挑选筑巢地点，是为了寻找合适的产卵地，故选D。

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