题目内容：

The Yellow River is the second______in China. Alo
The Yellow River is the second______in China.
Along. Blonger. Clongest Dthe longest

优质解答

C,已有second修饰则不再用the,the表示最有唯一之意.
没有second时,如Changjiang is the longest river in china,这里的the不可以去掉.