二年名校模拟·一年权威预测
【模拟提升演练】
1
(2012·连云港模拟)
Eat more, Play more—Weight less
In the United States, 20 to 40 percent of the adult population have a “weight problem”. To many people, the cause seems obvious: we eat too much. But scientific evidence does little to support this idea.
Several modern studies have shown that fatter people do not eat more on average than thinner people and that slim people are more active than fat people.
I believe that this shows overweight people can become relatively slim gradually via a progressive program of regular exercise. The key is regular, enjoyable activity.
Use of energy (calories) by the body falls into two categories. The first is energy used for essential bodily functions—digestion, heart beat, breathing—and BMR(新陈代谢). In an average-sized adult, BMR requires about 1, 400 calories per day.
The second category is energy used for physical activity—standing, walking and
