单选题
Walking is the easiest and simplest form of exercise. By putting one foot in front of the other, you can start to walk your ways towards a healthier lifestyle. Walking is an easy way to challenge the cardiovascular system (心血管系统), while at the same time building muscles. But to achieve these goals, a little more than a gentle walk around the block is required. Walking actually burns as many calories (卡路里) as running the same distance—if done in the correct manner and at a reasonable pace (步伐). Start with a basic program that you can complete three or four times a week. This should include five main steps: —A beginning warm-up for about 5 minutes. —A little bit faster period of 5 minutes at medium level (中等速度). —A 10-minute "burning" at a high level. —A 5-minute slow down period at a medium level. —A 5-minute cool down period at a low level again. A suitable walking pace of around 5 kilometers per hour will burn around 80 calories in 30 minutes.
单选题
According to the passage, walking is a simple way to ______. A. lose weight B. avoid heart attacks C. cure blood diseases D. strengthen heart functions
【正确答案】
D
【答案解析】[解析] 由第一段第三句话“Walking is an easy way to challenge the cardiovascular system, ...”知散步对心血管疾病有一定的治疗功能，故本题答案为D。
单选题
In order to benefit from walking, we should ______. A. take it as a planned exercise B. move as gently as possible C. do it in a quiet place D. go as fast as possible
【正确答案】
A
【答案解析】[解析] 根据第二段内容“Walking actually burns as many calories as running the same distance-if done in the correct manner and at a reasonable pace. ”可知如果方法和速度都得当，散步所消耗的热量和跑同样的距离所消耗的热量相同。所以本题答案为A。
单选题
In the first 5 minutes of walking, you should walk ______. A. quickly B. slowly C. at top speed D. at medium pace
【正确答案】
B
【答案解析】[解析] 根据文章中“A beginning warn-up for about 5 minutes. ”及“A little bit faster”可推知前五分钟行走应较慢，故本题答案为B。
单选题
Compared with running the same distance, walking in the recommended way bums ______. A. fewer calories B. more calories C. a fixed number of calories D. the same number of calories
【正确答案】
D
【答案解析】[解析] 由第二段前半句“Walking actually burns as many calories as running the same distance...”知散步与跑步，相同的距离可以消耗相同的热量，故本题答案为D。
单选题
Which of the following is TRUE about the suggested walking program? A. Effective walking lies in the gradual increase of speed. B. The same pace should be kept throughout the walking. C. One should not stop suddenly while walking fast. D. One should change one's walking pattern every 5 minutes.