流行性腮腺炎的病原体是（）

A.细菌

B.病毒

C.衣原体

D.立克氏体

E.支原体

Joe will come to the party at Jane and Ian's, won't he? （）

A.Oh, yeah, I forgot.

B.It‘s at 8 o‘clock.

C.Yeah, he‘s bringing his cousin, Sandy

D.Yeah, it‘s a nice party