There were two small rooms in the house smaller of which served as kitchen.A. the a B.

问题补充：

There were two small rooms in the house, smaller of which served as kitchen.

A. the, a

B. a, the

C. the, the

D. a, a

答案：

(答案→)A. the, a

B. a, the

C. the, the

D. a, a

解析：考查冠词的用法。句意“这座房子有两间小房间，其中那间较小的用作一个厨房。”特指较小的那个，用定冠词the；排除B、D；泛指一个厨房，应该用不定冠词。故选A。