【題目】__________ to smart phones just before bed, as a research says recently, can lead to poor night’s sleep.

A. Being exposedB. ExposedC. Having exposedD. To expose

【答案】A

【解析】

試題分析：考查非謂語動(dòng)詞。句意：據(jù)最近的一次調(diào)查報(bào)道，睡前暴露在智能手機(jī)下會(huì)導(dǎo)致晚上睡不好。人是被暴露在手機(jī)輻射下的，應(yīng)用被動(dòng)語態(tài)。因?yàn)?/span>在句中作主語，故應(yīng)用動(dòng)名詞。故選A項(xiàng)。

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