The Yellow River is the second river in our country.A. longB. longerC. longestD. the longe

问题补充：

The Yellow River is the second river in our country.

A. long

B. longer

C. longest

D. the longest

答案：

A. long

B. longer

(答案→)C. longest

D. the longest

解析：英语中在表示第几时，一般是在该形容词副词的最高级前加序数词。句意：黄河是我国的第二长河。故在long的最高级前加序数词second，第二，选C.