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    　　PALO ALTO, California－“Switching off the television may help prevent children from getting fatter－even if they do not change their diet or increase the amount they exercise, ”US researchers said last week．

    　　A study of 192 third and fourth graders, generally aged eight and nine, found that children who cut the number of hours spent watching television gained nearly two pounds(0.9 kg)less over a one-year period than those who did not change their television diet．

    　　“The findings are important because they show that weight loss can only be the result of a reduction in television viewing and not any other activity,” said Thomas Robinson, a pediatrician(儿科专家)at Stanford University．

    　　“American children spend an average of more than four hours per day watching television and videos or playing video games, and rates of childhood being very fat have doubled ?over the past 20 years,” Robinson said．

    　　In the study, presented this week to the Pediatric Academic Societies’ annual meeting in San Francisco, the researchers persuaded about 100 of the students to reduce their television viewing by one-quarter to one-third．

    　　Children watching fewer hours of television showed a significantly smaller increase in waist size and had less body fat than other students who continued their normal television viewing, even though neither group ate a special diet or took part in any extra exercise．

    　　“One explanation for the weight loss could be that the children unstuck to the television may simply have been moving around more and burning off calories,” Robinson said．

    　　“Another reason might be due to eating fewer meals in front of the television．Some studies have suggested that eating in front of the TV encourages people to eat more,” Robinson said．

    (1)

    The author tries to tell us in the first two paragraphs that ________．

    [　　]

    A．

    children will get fatter if they eat too much

    B．

    children will get thinner if they eat less

    C．

    children will get fatter if they spend less time watching TV

    D．

    children will get fatter if they spend more time watching TV

    (2)

    According to the passage, the time American children usually spend on watching TV ________．

    [　　]

    A．

    is more than four hours a day

    B．

    is less than four hours a day

    C．

    doubled in the last twenty years

    D．

    is more than on any other activities

    (3)

    The time children spend on TV viewing every day is suggested to be about ________．

    [　　]

    A．

    six hours

    B．

    eight hours

    C．

    three hours

    D．

    one hour

    (4)

    Which one of the followings is right?

    [　　]

    A．

    Children usually eat fewer while watching TV．

    B．

    Children usually eat more while watching TV．

    C．

    Children eat the same amount of meals while watching TV．

    D．

    Children usually eat nothing while watching TV．

    (5)

    Why can watching TV increase kids’ weight according to the passage?

    [　　]

    A．

    They usually eat more while watching TV．

    B．

    They burn off fewer calories．

    C．

    They change their diet while watching TV．

    D．

    Both A and B．

    答案：1．D;2．A;3．C;4．B;5．D;
    解析：

    (1)

    从第一段“switching off the television…getting fatter”看出。

    (2)

    由第四段第一句话可知。

    (3)

    由第五段最后一句话,“the researchers persuaded…to reduce their television viewing by 1/4 to 1/3”可知。

    (4)

    综合细节题，由第六段可知。

    (5)

    综合细节题。由文章最后两段可知。


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