有关肺炎链球菌不正确的描述

A．革兰阳性双球菌

B．有自溶现象

C．均对青霉素敏感

D．对optochin敏感

E．可引起脑膜炎

These are questions ______ by history.

A．left over

B．left off

C．leaving out

D．leaving behind