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问题 单项选择题 A1/A2型题

对微生物正确的说法是（）

A.在自然界生存力非常弱的小生物

B.体型小于1mm的微小生物

C.自然界存在数量非常少的小生物

D.不具备细胞结构的微小生物

E.适应环境能力强

答案

参考答案：E

单项选择题

He had studied hard, he would have been able to pass the exam.

A. He had studied harder

B. If only he studied more
C. Had he studied harder

D. When he studied more
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单项选择题

特种作业操作证每（）年复审1次。

A、4

B、5

C、3
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