[题目]Air pollution results in stronger greenhouse effect, which leads to global warming. We must take measures to prevent pollution before it is too late.A. generally B. gradually C. gently D. usually 题目和参考答案——青夏教育精英家教网—

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【题目】Air pollution results in stronger greenhouse effect, which __________ leads to global warming. We must take measures to prevent pollution before it is too late.

A. generally B. gradually C. gently D. usually

【答案】B

【解析】

试题分析：考查副词词义辨析。A. 大概地；B. 逐渐地；C. 温柔地，轻柔地；D. 通常。句意：空气污染导致温室效应更大，逐渐导致全球变暖。我们必须在为时已晚之前采取防止污染的措施。故选B。

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