题目内容
There are more than 740 million Chinese _______ to second-hand smoking in public places now.
A. are being exposed B. exposed
C. to expose D. having been exposed
B
【解析】
试题分析:考查非谓语动词。句意:现在有7.4亿中国人在受到公共场合二手烟的威胁。Chinese与expose是动宾关系,即中国人被暴露于某物,排除C;be exposed to sth遭受......的影响,暴露于......,exposed是形容词化的过去分词,D项表示完成,两个动作有先后关系,这里是正在遭受危害,排除D;句子是there be结构,A项的are多余,排除A,故选B。
考点:考查非谓语动词
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