仅含有蛋白成分不含有核酸的微生物是
A. 类病毒
B. 拟病毒
C. 阮粒
D. 缺陷病毒
E. 小DNA病毒
病毒的增殖方式与下列哪种微生物相似
A. 衣原体
B. 支原体
C. 立克次体
D. 螺旋体
E. 噬菌体
How long did it ______ you to do homework
A. take
B. use
C. pay
On their way to the other town ______.
A. one of the servants carried food but the others didn't
B. no one carried food
C. all carried some food
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