Sam and Sandy are twin brothers. But Sam is        than Sandy.

A. more outgoing      

B. very outgoing        

C. the most outgoing

能发生脑水肿的传染病有（）

A.艾滋病

B.流行性出血热

C.流行性乙型脑炎

D.流行性脑脊髓膜炎

E.重症肝炎