_________________ and you will succeed in time, I dare say.

A．To make more efforts

B．Making more efforts

C．Make more efforts

D．Made more efforts

关于荚膜，下列说法错误的是（）.

A.其成分多为脂类

B.对细菌的存活起一定的保护作用

C.抗吞噬作用

D.荚膜物质具有抗原性

E.可作为细菌鉴别和分型的基础