Children and teenagers who spend lots of time in front of screens---especially TVs---are   easier to get more weight as they grow, according to a new study.
The findings agree with the research suggesting all that inactive sitting and always watching   advertisements may lead to poor eating habits.
Researchers used results from a long-term study of children who took part in the surveys every two years. Children were between ages 9 and 16 when the study started. Out of 4,300 girls in the   study, 17 percent were overweight or obese（肥胖的）. Twenty-four percent of the 3,500 boys   were also above a healthy weight.
The surveys included questions about their height and weight as well as how much time they spent watching TV and DVDs and playing computer and video games.
From one survey to the next, each one-hour increase in children’s daily TV watching was in connection with an increase of about 0.1 points on a body mass index (BMI)（體質(zhì)指數(shù)）, which measures weight in connection with height. There’s an increase of about half a pound in weight per extra hour of TV.
“The weight of the evidence is so strong that television watching is connected with unhealthy changes in weight among youth,” says Jennifer Falbe, who led the study while at the Harvard School of Public Health in Boston.
“It's important for parents to know that all the obesity-causing（引起肥胖的）screens really should be limited in their children's lives.” Falbe says. “When children watch TV, there are many food advertisements on TV that might lead them to eat a cookie or drink a soft drink.” What's more, she says, “they can get into a hibernating(冬眠) state on the sofa, even if children are sitting down while playing a computer game.”
【小題1】Which of the following statements can be the best title for the text?

A．A new study on screens.
B．TVs do harm to children.
C．The less TV time, the fatter.
D．Too much screen time leads to obesity.
【小題2】 How many children took part in the study?
A．4,300B．3,500
C．7,800D．9,800
【小題3】According to the study, one extra hour screen time will cause children about ______ poundfatter.
A．0.1B．0.5
C．0.3D．0.7
【小題4】According to Falbe , what should parents do to stop children getting fat?
A．Limiting the time of children watching TV.
B．Buying children food advertised on TV.
C．Not allowing children to watch TV.
D．Encouraging children to play computer games.


【小題1】D
【小題2】C
【小題3】B
【小題4】A

解析試題分析：根據(jù)一項(xiàng)研究，青少年長(zhǎng)時(shí)間對(duì)著屏幕，特別是電視，容易超重，文章具體介紹這項(xiàng)調(diào)查的證據(jù)和解決這個(gè)問(wèn)題的方法。
【小題1】主旨題：根據(jù)全文的內(nèi)容和第一段的句子：Children and teenagers who spend lots of time in front of screens---especially TVs---are   easier to get more weight as they grow, according to a new study.可知這篇文章講的是在屏幕面前待的時(shí)間太長(zhǎng)會(huì)導(dǎo)致肥胖。所以選D。
【小題2】細(xì)節(jié)題：根據(jù)第三段的句子：Out of 4,300 girls in the   study, 17 percent were overweight or obese（肥胖的）. Twenty-four percent of the 3,500 boys   were also above a healthy weight.可知一共是7800名兒童參加了研究，所以選C。
【小題3】細(xì)節(jié)題：根據(jù)第五段的句子：There’s an increase of about half a pound in weight per extra hour of TV.可知在電視前面多呆一個(gè)小時(shí)會(huì)增加1.5磅的重量。所以選B。
【小題4】細(xì)節(jié)題：根據(jù)最后一段的句子：“It's important for parents to know that all the obesity-causing（引起肥胖的）screens really should be limited in their children's lives.”可知解決這個(gè)問(wèn)題的方法是限制孩子看電視的時(shí)間。所以選A。
考點(diǎn)：考查健康類短文

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