- 试题详情及答案解析
- _____to nuclear radiation, even for a short time , may produce variants(变异体) of genes in human bodies.
| A．Being exposed | B．Having expose |
| C．Exposed | D．After being exposed |
- 答案：A
- 试题分析：考查非谓语动词。句意：暴露在核辐射下，甚至很短的时间就可能在人的身体里产生基因变异。Being exposed to nuclear radiation 是这个句子的主语，中间的插入语even for a short time 可以不用管。may produce是谓语， variants of genes in human bodies是宾语。选项B、C、D在句首时都是作状语的，不能做主语，所以不对。故选A。
考点：考查非谓语动词