【题目】______ to nuclear radiation, even for a short time, may influence genes in human bodies.
A. Having exposedB. Being exposed
C. To exposeD. Exposed
在线课程【答案】B
【解析】
考查动名词。句意：暴露于核辐射中甚至很短时间都会影响人体的基因。分析句子成分发现even for a short time是插入语，may influence是谓语，前面的部分应该是主语，be exposed to“暴露于”，要用动名词Being exposed to。故B选项正确。