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        1. 【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(dòng)名詞。句意:暴露于核輻射中甚至很短時(shí)間都會(huì)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(yǔ),may influence是謂語(yǔ),前面的部分應(yīng)該是主語(yǔ),be exposed to“暴露于”,要用動(dòng)名詞Being exposed to。故B選項(xiàng)正確。

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