第一次世界大战是各方面因素综合作用的结果。这些因素不包括
A.资本主义列强对世界市场的争夺
B.军国主义及极端民族主义的泛滥
C.多个世界大国的出现及争斗
D.宗教矛盾的激化
答案:D
用适当的介词填空。
1. It's a fine day today. Let's go ______a drive.
2. The children went camping _______ the rain.
3. What did they do______their first day off?
4. We watched a movie ______ dolphins.
5. ______ the end of the day, the children were very happy.
以核酸为模板进行增殖的微生物是()
A.细菌
B.病毒
C.衣原体
D.立克次体
E.放线菌