number of overseas reporters registered to cover the 18th National Congress has seen rem

问题补充：

number of overseas reporters registered to cover the 18th National Congress has seen remarkable increase.

A. A; a

B. The; a

C. A; the

D. The; /

答案：

A. A; a

(答案→)B. The; a

C. A; the

D. The; /

解析：考查冠词的用法：第一空填the，the number of“…的数量”后面接单数谓语，和后面has一致，第二空填a，表示一种明显增加，句意是：有登记的报道18大的海外记者的数量有很大增加。选B。