服用十枣汤或舟车丸治疗鼓胀，药后会出现除下列哪项外的副作用（）。

A.泛恶

B.呕吐

C.泻下

D.腹痛

E.头晕

There are 2000 boys in this school，and _________them like playing football.

A．five hundred

B．five hundreds

C．five hundreds of

D．five hundred of