Question

The United States _______ fifty states , one of which is separated from the others by the Pacific Ocean.

A．consists of

B．is consisted of

C．are made up of

D．makes up

Answer 1

A

考查固定短语和主谓一致。The United States作主语时，谓语动词要用单数，排除C; consist of由……构成，无被动，排除B；make up构成……，与句意不符。所以选A。