If it seems like every teenager you see has a smartphone in their hands, it's not your imagination. Fully 73% of American teens have access to one, a study finds. Add in the 15% of teens who have a basic cellphone. Only 12% of the teens said they didn't have a cellphone of any type.

A survey of more than 1,000 teens found that 92% of teens go online daily and 24% say they are online "almost constantly." "It's very easy to feel as though you are nearly often online when you have a ringing, music-playing device in your pocket 15 or more hours a day," Lenhart said. Just 12% of teens said they went online only once a day and a 6% said they went online weekly.

Amy Treadwell lives in Novato, Calif., and sees the pattern with her daughter's friends. "I'll have three girls in the back seat of my car and they've all got phones. They're interacting, but not interacting," she said.

While the Internet pulls teens from family life, in some ways it also allows parents to connect with their children, said Nancy Costello. Her daughter got a smartphone when she turned 13. One upside has been the glimpse she gets into her daughter's daily life. "I can find her feeling by what she posts or what she tweets," said Costello, who made it a rule that she gets to follow her daughter on social media. "I'm guessing that I probably know more about my kid as a 14-year-old than my mother knew about me when I was that age." Costello also uses her daughter and her friends as a way to understand what's hot in social media. "Facebook is where Baby Boomers are going, but for people below 20, it's not about Facebook, it's others —Twitter and Instagram and Snapchat," she said.

本时文内容由奇速英语国际教育研究院原创编写，禁止复制和任何商业用途，版权所有，侵权必究！

1.How many American teens own a mobile phone of some sort？

A 15%.

B 73%.

C 88%.

D 92%.

解析：选C。C。细节理解题。从文章第1段最后1句Only 12% of the teens said they didn't have a cellphone of any type.可知，12%的孩子不使用任何类型的手机，因此有88%的孩子使用手机。

2.What is the main idea of paragraph 2?

A Mobile phones are a major part of teens' lives today.

B A music-playing device in your pocket is necessary.

C It's really very easy for the teens to stay online often.

D Teens should stay online as long as 15 hours a day.

解析：选A。A。主旨大意题。从该段第1句的A survey of more than 1,000 teens found that 92% of teens go online daily and 24% say they are online "almost constantly"可以得知孩子们用手机几乎占据了他们的大部分时间。

3.When Amy Treadwell said “They're interacting, but not interacting” in paragraph 3, she means ______.

A girls talked with each in the car

B girls spent their time on cellphone

C girls should be given cellphones

D girl weren’t good at making friends

解析：选B。B。推理判断题。根据第3段第2句的"I'll have three girls in the back seat of my car and they've all got phones可知孩子都有手机，她们都在和其他人交流，但没有和车上的其他孩子交流，这说明她们都把自己的时间花费在手机上了。

4.The underlined word “upside” in the last paragraph may mean ______.

A harm

B difference

C knowledge

D advantage

解析：选D。D。词意推测题。从第4段第1句的While the Internet pulls teens from family life, in some ways it also allows parents to connect with their children可知手机有其害处；而下面的I can find her feeling by what she posts or what she tweets可知她能监控孩子在网上的动态是孩子玩手机的“优点”，所以该词的意思为advantage。

5.What did Costello ask her daughter to promise?

A She should let her mother know more about her.

B She should let her mother follow her on media.

C She should let her mother understand what's hot.

D She should let her mother know Baby Boomers.

解析：选B。B。细节理解题。根据文章最后1段第4句的who made it a rule that she gets to follow her daughter on social media可知她要求女儿向她承诺，会让她知道自己在社交媒体上的动向。