181.Department of Homeland Security and CIA produced ____ joint report on Monday warning that _____ next 911 could in fact occur on ____ different date.

A.the;a;the

B.a;the;a

C.不填;the;the

D.a;不填；the

182.If you grow up in _____ large family,you are likely to develop ____ ability to get on well with ____ others.

A.不填；an;the

B.the;an the

C.a;the；不填

D.a;the;the

181.答案是B；

考查冠词的用法，第一空泛指一份联合报告；第二空特指下次911事件；第三空泛指一个不同的日期。

182.答案是C；

考查冠词的用法，第一空泛指一个大家庭；第二空特指与人相处的能力；第三空others泛指其他人，前面不用冠词