Beijing is capital of China. And its one of in Asia.A. a; the most beautiful cityB. the

问题补充：

Beijing is capital of China. And its one of in Asia.

A. a; the most beautiful city

B. the; the most beautiful city

C. a: the most beautiful cities

D. the; the most beautiful cities

答案：

A. a; the most beautiful city

B. the; the most beautiful city

C. a: the most beautiful cities

(答案→)D. the; the most beautiful cities

解析：“首都”只有一个，用the表示特指；同时，在one of．．．后应用最高级，再接复数名词。