Walking is the easiest and simplest form of exercise. By putting one foot i

游客2024-07-19 36

问题    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 (卡洛里) 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 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. [br] According to the passage, walking is a simple way to______.

选项 A、lose weight
B、avoid heart attacks
C、cure blood diseases
D、strengthen heart functions

答案 D

解析细节题。根据文章第一段第三句，“步行是对心血管系统的挑战，同时也锻炼厂肌肉”，判断答案应该是D 项。

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