Scientists have concluded that nonsmokers who must______inhale(吸入)the air polluted by tobacco smoke may suffer more than the smo

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问题 Scientists have concluded that nonsmokers who must______inhale(吸入)the air polluted by tobacco smoke may suffer more than the smokers themselves.

选项 A、involuntarily
B、instantaneously
C、spontaneously
D、reluctantly

答案A

解析 involuntarily“非自愿地,非本意地,不知不觉地”,题意中指那些非吸烟者被动地吸人被烟污染的空气,他们的这种动作都是非自愿地,不知不觉地,所以此词最符合题意;instantaneously“即刻,立即”;spontaneously“自然产生地,自发地”;reluctantly“不情愿地,勉强地”,强调的是人的一种主观性,如:He left the cinema reluctantly.“他恋恋不舍地离开了电影院。”所以此词不符合题意。
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