Because he has been out of _____ work for months, Jack now has to depend on his parents for _____living.

A．/; a

B．the; a

C．/;/

D．the; /

目前世界上代表性最广泛、最有权威性的综合性国际组织是[ ]

A．世界贸易组织

B．国际奥委会

C．世界卫生组织

D．联合国