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  3. Acute hearing helps most animals sense the approach of thunderstorms long before people______.

Acute hearing helps most animals sense the approach of thunderstorms long before people______.

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问题 Acute hearing helps most animals sense the approach of thunderstorms long before people______.
选项 A、do
B、hear
C、do them
D、hearing it
答案A
解析 句子为一般现在时，且people为复数名词，所以该空应填的完整内容为：sense the approach of thunderstorms，但为避免重复，可用do代替。如：Ramona does a lot of jobs in the house，but her sister doesn’t．雷蒙娜在家里做很多活，可是她妹妹却不做。
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考研英语一

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