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【题目】-Do you know____ second - hand smoke?

一To protect our health and memory.

A how we should prevent B. why should we prevent

C. why we should prevent D. whether we should prevent

【答案】C

【解析】

试题分析:句意:—你知道为什么我们要禁止二手烟?—为了保护我们的健康和记忆力。根据句意及题干分析此题是考查宾语从句的用法,其语序是陈述语序,排除B,根据回答引导词应用特殊疑问词why,故选C。

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