以下属于原核细胞型微生物的是（）
A.病毒和细菌
B.细菌和衣原体
C.病毒和类病毒
D.真菌和钩体
E.酵母菌和真菌
参考答案：B
It is suggested that the project ______ until all the preparations have been made. [ ]
A. is not started
B. won't be started
C. isn't to be started
D. not be started
执行安全措施的要求是什么？
