单选题 How often do you use the Internet? Most American teens spend a lot of time emailing friends and surfing the Internet.
A new study of more than 2500 teens made by Yahoo, says that more teens use the Internet than watch television. In an average week, an American teen will spend:
* 16.7 hours online (not including emailing)
* 13.6 hours watching TV
* 12 hours with the radio on
* 7.7 hours on the phone
* 6 hours reading books and magazines (not including school books)
The study says that being able to choose what you look at is the main reason teens choose the Internet over other types of media(传媒).
On a typical day, an American teen can choose from over 200 cable television networks, 5500 magazines, 10500 radio stations, more than 30 million websites, and 122000 new books.
The number of Internet users in China has grown by 15 per cent over the past six months to 68 million. This is the second largest online population in the world after the US.

单选题 From the passage, we know that most American teens spend the least time on ______.

【正确答案】 A

【答案解析】[解析] 细节题。文章第二段后列举了美国青少年花在不同活动上的时间。简单对比一下就知花在阅读上的时间最少，为6小时，因此答案为[A]。

单选题 Which country has the largest population of Internet users?

【正确答案】 A

【答案解析】[解析] 推理判断题。文章最后一段指出，中国网民的数量在过去的6个月内增长了15%，成为世界上继美国之后第二大网民最多的国家。由此可以知美国的网民数量是世界第一，选[A]。

单选题 Why do the teens like the Internet best?

【正确答案】 C

【答案解析】[解析] 细节题。答案信息对应于倒数第三段第一句：...being able to choose what your look at is the main reason...其意与[C]一致。