5.
We can infer according to this passage that a bug was a _____.
A.
certain kind of plants B. some kind
of sugar C. tiny insect D. sweet
things
B
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.