下列细菌的特殊结构中具有强抵抗力的是（）。
A.鞭毛
B.芽胞
C.荚膜
D.菌毛
E.性菌毛
参考答案：B
根据句意及汉语提示填空。
1. ______ (早饭后), he puts on his jacket and rides his bike to work.
2. She often ______ (去上班) at 8:30.
3. The more you ______ (听) English, the better your English will be.
4. Would anyone like something to drink before we ______ (开始)?
5. Jerry works very hard so as to keep his ______ (工作).
扦插成活的基本原理是什么？
