题目内容
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(0.9kg) 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 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 ________.
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A．children will get fatter if they eat too much |
|
B．children will get thinner if they eat less |
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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_____.
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A．is more than four hours a day |
B．is less than four hours a day |
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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 ________.
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A．six hours |
B．eight hours |
C．three hours |
D．one hour |
4.Which one of the following is right?
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A．Children usually eat fewer while watching TV. |
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B．Children usually eat more while watching TV. |
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C．Children eat the same amount of meals while watching TV. |
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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.
1.D
2.A
3.C
4.B
5.C
【解析】略
开心快乐假期作业暑假作业西安出版社系列答案
名题训练系列答案A growing number of workers at Google Inc., Facebook Inc. and other employers are trading in their sit-down desks for standing ones, saying they feel more comfortable and energized. They also are motivated by medical reports saying that sitting for too long leads to increased health risks.
A standing desk sits high off the floor so a worker can either stand at it or sit on a high stool to use it. Officials at Palo Alto-based Facebook say a number of employees asked about standing desks after news articles were published about the health risks of sitting all day.
The stories cited medical studies that tied excessive sitting to increased obesity and other health problems because of factors including a drop in physical activity. A 2010 study by the American Cancer Society found that women who sat more than six hours a day were 37% more likely to die prematurely than women who sat for less than three hours, while the early-death rate for men was 18% higher. The American College of Cardiology released a study in January that found increased mortality (死亡率) among people who sat longer at home than those who didn't.
No one seems to compile statistics on the standing-desk trend. But anecdotal reports suggest Silicon Valley is embracing the movement.
Facebook officials say they have seen an upsurge in requests for standing desks to five to eight a week with a total of between 200 and 250 deployed (配置) at the company of more than 2,000 employees. Facebook also is trying out a treadmill station ─ where a worker can walk or run on a treadmill while tapping at a computer.
Google spokesman Jordan Newman said that 'many employees at Google opt for standing desks, and we offer them as part of our wellness program' though he said he didn't know the exact number.
Greg Hoy, 39 years old, asked for a standing desk shortly after joining Facebook seven months ago as a design recruiter. 'I don't get the 3 o'clock slump anymore,' he said. 'I feel active all day long.'
【小题1】The underlined word “motivated” in paragraph 1 can be replaced by .
| A．frightened | B．inspired | C．missed | D．discouraged |
| A．a drop in physical activity was the only reason why excessive sitting caused increased obesity. |
| B．women who sat longer were more likely to die prematurely according to a 2010 study by American College of Cardiology |
| C．according to the study, the early-death rate for men was 18% higher than that for women. |
| D．the mortality among people who didn’t sat long at home was lower than that among people who did. |
| A．is a computer that a worker can take along when he walks or runs |
| B．has been tried out by Facebook and now is very popular with other companies |
| C．is a place where workers can exercise while working. |
| D．is a treadmill on which workers can run or walk only after work |
| A．sitting for too long leads to increased health risks |
| B．standing desks have replaced sit-down ones in Facebook Inc. |
| C．more and more workers choose standing desks instead of sit-down ones |
| D．many employees at Google opt for standing desks |