Chanjiang River is one of in the world.A. the longest riverB. the longer riverC. the longe

问题补充：

Chanjiang River is one of in the world.

A. the longest river

B. the longer river

C. the longest rivers

D. the longer rivers

答案：

A. the longest river

B. the longer river

(答案→)C. the longest rivers

D. the longer rivers

解析：句意：长江是世界上最长的河流之一。形容词的最高级为定冠词the加形容词的最高级加名词构成，而前面有个one of，所以后面的名词要用复数形式；故选C。