阅读理解。 American children aren't the only

问题：

阅读理解。

     American children aren't the only couch potatoes with nearly one third of children globally spending three

hours a day or more watching TV or on computers, according to the study of over 70,000 teens in 34 nations.

     From Argentina to Zambia, Regina Guthold of the World Health Organization in Geneva and her colleagues

found most children aren't getting enough exercise and it made no difference if they lived in a rich or a poor

country. "With regards to physical activity levels, we did not find much of a difference between poor and rich

countries," Guthold said. "Growing up in a poor country does not necessarily mean that kids get more physical

activity." The study was published in The Journal of Pediatrics, looking at 72,845 schoolchildren aged 13 to 15

from North and South America, Asia, Europe, and the Middle East. The children were surveyed between 2003

and 2007.

     The researchers defined adequate physical activity as at least an hour of exercise outside of gym class at

least five days a week.Children who spent three or more hours a day watching TV, playing computer games,

or chatting with friends -- aside from time in school or time spent doing homework-were classified as sedentary. The researchers found only one quarter of the boys and 15 percent of the girls were getting enough exercise by

these definitions. A quarter of boys and nearly 30 percent of girls were sedentary and didn't get enough exercise with girls less active than boys in every country aside from Zambia.

     Uruguay had the highest percentage of active boys, at 42 percent, while Zambia had the lowest, at 8 percent. Girls from India were the most active, with 37 percent meeting exercise recommendations, while girls from

Egypt were the least active, with just 4 percent getting adequate exercise. Children in Myanmar were the least

sedentary, with 13 percent of boys and 8 percent of girls classified as sedentary. The most sedentary nations

were St. Lucia and the Cayman Islands, with 58 percent of boys and 64 percent of girls spending at least three

hours a day in sedentary activities.

     People show deep concern for kids' lack of physical activity in various nations. Why do they have a low

level of physical activity? Guthold speculated (推测) that urbanization (都市化)could be a factor as well as

access to cars and TVs.

1. If you are a sedentary, you _____.

A. are a diligent student spending much time doing homework

B. have at least an hour of exercise outdoors every day

C. like watching TV and playing computer games

D. spend a lot of time sitting down and not moving

2. Which statement is TURE about the finding of the study led by Regina Guthold?

A. Most children around the world don't meet the exercise recommendation.

B. Girls in every country are no more active than boys.

C. Children in rich countries relatively get less physical activities .

D. Only 4 percent of the girls from Egypt are not active in exercise.

3. Which could be the best title of the passage?

A. American children are addicted to TVs and computers

B. Nearly one third of children globally are couch potatoes

C. Effects of physical activities on health

D. Unimaginable standard of physical exercise