土壤中哪类微生物的数目最多()。
A. 放线菌
B. 真菌
C. 细菌
D. 酵母菌
参考答案:C
解析:
土壤中微生物以细菌数量最大,约占70%~90%。
The father is telling his son ______ on New Year Eve. They're going to listen to the New Year clock. [ ]
A. not fall asleep
B. not to fall asleep
C. to not fall asleep
D. to fall not asleep
单份装订的案卷应逐件加盖()
A、归档章
B、档号章
C、卷号章
D、件号章