—What if he failed in the next monthly examination again?

— I don’t know. ______ heart and be reduced _____ the class?

A．Will he lose; not to attending

B．Did he lose; to not attending

C．Had he lost; not to attending

D．Would he lose; to not attending

弓形体病和疟疾的病原体均属于（）。

A.革兰氏阴性杆菌

B.孢子纲

C.丝状病毒群

D.螺旋体