Recently people have made great progress in using power of nature to produce ele

Recently people have made great progress in using ______ power of nature to produce ______ electricity.

A. a; the           B. / ;  /             C. the;  /              D. a; an

试题答案

C.

解析:

解析：考查冠词。第一个空特指自然界的power，所以用定冠词；第二个空后的electricity是不可数名词，所以不用冠词。