题目内容
________ to nuclear radiation, even for a short time, may produce variants(变异体)of genes in human bodies.A.Being exposed
B.Having exposed
C.Exposed
D.After being exposed
答案:A
解析:
提示:
解析:
| 注意到这道题中有一个插入语“ever for a short time”,可先去掉以便分析句子,插入语前面的是主语,必须用非谓语动词,再根据句意可知必须用被动语态。
|
提示:
练习册系列答案
相关题目
______ to nuclear radiation, even for a short time, may influence genes in human bodies.
| A.Exposed | B.Being exposed | C.To expose | D.Having exposed |
____ to nuclear radiation, even for a short time, may produce variants of genes in human body.
|
A.Exposed |
B.Being exposed |
C.Having exposed |
D.After being exposed |