A、 About seven million.
B、 Half of the American population.
C、 25% of American people.
D、 About 25 million.

【正确答案】 A

【答案解析】解析：短文提到，“目前美国约有700万在校大学生”，故A正确。

A、 They are older than young people.
B、 The young people will soon be in charge of the nation.
C、 The students today have strong opinions.
D、 The youth's ideas are sometimes wrong.

【正确答案】 B

【答案解析】解析：短文说，“年轻人很快就要领导社会，很自然他们的观点很重要”，故B正确。

A、 The lives of their parents.
B、 Making a better life for all people.
C、 The trouble in American families.
D、 The strong opinions.

【正确答案】 B

【答案解析】解析：短文说，“他们对如何使所有人过上更好的生活深感兴趣”，由此可判断B正确。

A、 They feel much is wrong with the lives of their parents.
B、 They see clearly what is right and good in the lives of their parents.
C、 They feel that everything about the lives of their parents is acceptable.
D、 They feel nothing is right and good in the lives of their parents.

【正确答案】 A

【答案解析】解析：短文提到，年轻人在父母的生活中看到许多错误的东西，他们很难在旧的生活方式中看到正确的、好的东西，因此常与父母发生冲突。故A正确。