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.
【小题1】The author tries to tell us in the first two paragraphs that ________.

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.
【小题1】The author tries to tell us in the first two paragraphs that ________.

He kept the light in his room ______ the whole night.

　 A. burnt 　 B. burning  C. burn 　 D. to burn

Fitness Center timetable

Body Power: This class uses weights and aerobic movements (a form of very active physical exercise) to increase strength while burning fat. It is suitable for all levels for fitness.

　　Aerobics: This is a low to middle level of difficulty in aerobic class. It is good for beginner to average levels of fitness.

　　Beginner Aerobics: This class has a low level of difficulty and simple aerobic movements. It is mainly for people who have not exercised before or who are just returning after a long break of injury.

　　Body Stretch(hold your arms or legs out straight and tighten your muscles): This is a relaxation class which stretches all the muscle groups. It is suitable for all levels of fitness. People who exercise regularly or have a stressful (压力)lifestyle would also greatly improve their health in this class.

　　Body Burn: This is a high level of difficulty in aerobic class that mainly aims at fat burning. It is only for those people with a very high level of fitness.

On Wednesday the fitness class at 6: 30 p. m. is ___

　A. Aerobics     B. Body Power      C. Body Burn    D. Beginner Aerobics

The two classes that are suitable for all levels of fitness are___.

　A. Aerobics and Body Power           B. Body Power and Body Stretch

　C. Body Burn and Aerobics             D. Body Stretch and Beginner Aerobics

Lena wants to go to the City Gym on Saturday. She has not exercised for a long time. The best time for her to go would be ___.

　A. 3:00p.m.          B. 5:30p.m.        C. 7:15a. m.              D. 7:30p.m.

The main goal of the Body Burn is to___.

　A. reduce stress     B. reduce fat    C. increase strength    D. increase muscle size

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 ________.

2.According to the passage, the time American children usually spend on watching TV_____.

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

4.Which one of the following is right?

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.