(单选题)
______ to nuclear radiation, even for a short time, may influence genes in human bodies.
A.Exposed
B.To expose
C.Having exposed
D.Being exposed
参考答案:D
参考解析:
考查动名词做主语。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,be exposed to意为“暴露于”,要用动名词形式“Being exposed to”作主语。故选D。
知识点: