题目
Those ages 8 to 18 spend seven and a half hours a day with such devices, compared with less than six and a half hours five years ago. And that does not count the hour and a half that youths spend texting,or the half hour they talk on their cellphones. And because so many of them are multitasking—say, surfing the Internet while listening to music—they pack on average nearly 11 hours of media content into that seven and a half hours.
The study's findings shocked its authors, who had concluded in 2005 that use could not possibly grow further, and confirmed the fears of many parents whose children are constantly tethered to media devices. ① It found, moreover, that heavy media use is associated with several negatives, including behavior. problems and lower grades.
Dr. Michael Rich, a pediatrician at Children's Hospital Boston who directs the Center on Media and Child Health, said that with media use so ubiquitous, it was time to stop arguing over whether it was good or bad and accept it as part of children's environment, “like the air they breathe, the water they drink and the food they
eat.”
Contrary to popular wisdom, the heaviest media users reported spending a similar amount of time exercising as the light media users. Nonetheless, other studies have established a link between screen time and obesity.
While most of the young people in the study got good grades, 47 percent of the heaviest media users—those who consumed at least 16 hours a day—had mostly C's or lower, compared with 23 percent of those who typically consumed media three hours a day or less. The heaviest media users were also more likely than the lightest users to report that they were bored or sad, or that they got into trouble, did not get along well with their parents and were not happy at school. The study could not say whether the media use causes problems, or, rather, whether troubled youths turn to heavy media use.
“This is a stunner,”said Donald F. Roberts, one of the authors of the study. “In the second report, I remember writing a paragraph saying we've hit a ceiling on media use, since there just aren't enough hours in the day to increase the time children spend on media. ② But now it's up an hour. ”
阅读以上文章,回答 87~92 题
第 87 题 It can be inferred that young Americans probably __________.
[A]are not allowed to use electronic devices in school.
[B] prefer a smart phone to a computer or television.
[C] want to buy the newest electronic devices.
[D] are all very good at sending texting.
第1题
The popular young doctor is the ____ director of the medical research institute.
A. Current
B. radical
C. average
D. typical
第2题
A. with normal
B. to average
C. with usual
D. to usual
第4题
A.look after
B.looked after
C.am looked after
D.was looked after
第5题
A. am
B. will be
C. was
D. were
第6题
A.thought
B.impression
C.concept
D.notion
第7题
In a certain PLMN,an average subscriber makes 5 calls during office hours (8 AM - 6 PM).It is known that in a certain cell area,there are going be 1000 subscribers,at any given hour,during these office hours.Assuming that a subscriber’s conversation lasts for 100 seconds,how many TRXes are needed in this cell to provide a grade of service of 2%? ()
A.2
b.3
c.4
d.There is not enough information given for an exact answer.
第8题
I am _______ enough to make up my own mind. You do not need to teach me.
A、young
B、mature
C、numerical
D、guarantee
第9题
— I am sorry to hear that. ________________.
A.It seems that go travelling alone in India is not that safe for a young lady like you.
B.I love India.
C.India in a nice place.
第10题
— I was robbed when I was travelling in India.
— I am sorry to hear that.________________.
A India in a nice place.
B It seems that go travelling alone in India is not that safe for a young lady like you.
C I love India.
第11题
The timing of marriage has varied【29】over the past century. In 1995 the average age of women in the United States at the【30】of their first marriage was 25. The average age of men was about 27. Men and women in the United States marry【31】the first time at an average of five years later than people【32】in the 1950s.【33】, young adults of the 1950s married younger than did any previous【34】in U. S. history. Today's later age of marriage is【35】the age of marriage between 1890 and 1940.【36】, a greater proportion of the population was married (95 percent) during the 1950s than at any time before【37】. Experts do not agree on【38】the "marriage rush" of the late 1940s and 1950s occurred, but most social scientists believe it represented a【39】to the return of peaceful life and prosperity after 15 years of severe economic【40】and war.
(1)
A.ratio
B.rate
C.percentage
D.poll
为了保护您的账号安全,请在“赏学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!