Though__ __ came that he was completely defeated, he didn't lose ______.

A．the word; his heart

B．the word; heart

C．word; his heart

D．word; heart

蚊子在乙脑流行环节中的作用是（）

A.传染源

B.中间宿主

C.贮存宿主

D.传播媒介和贮存宿主

E.传染源和贮存宿主