【題目】______ to nuclear radiation, even for a short time, may influence genes in human bodies.

A. Having exposedB. Being exposed

C. To exposeD. Exposed

【答案】B

【解析】

考查動名詞。句意:暴露于核輻射中甚至很短時間都會影響人體的基因。分析句子成分發(fā)現(xiàn)even for a short time是插入語,may influence是謂語,前面的部分應(yīng)該是主語,be exposed to“暴露于”,要用動名詞Being exposed to。故B選項正確。

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