(单选题)

What’s the main idea of the text?

A.How the Internet helps parents.

B.How the Internet affects teenagers.

C.Why the Internet grows so rapidly.

D.Why the Internet should be banned.

参考答案：B

参考解析：

主旨大意题。根据第一段第二句和第三句“As a parent, you may be concerned about how your teenagers are being impacted by the Internet. As a matter of fact, the Internet does affect teenagers with some of being positive and some negative.”及下文中互联网在四个方面影响可知本文主要是描述了互联网从这四个方面对青少年的影响。故选B。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语