可通过滤菌器的是()
有独特发育周期的是()

A．衣原体

B．支原体

C．螺旋体

D．立克次体

E．细菌

—Mr Wang, I’m afraid I can’t finish this task by myself.

—Don’t worry. Two more helpers _______ soon.

A．have been found

B．will be found

C．are found

D．were found