Jogging has become the most popular individual sport in America. Many theories, even some mystical ones, have been advanced to explain the popularity of jogging. The plain truth is that jogging is a cheap, quick and efficient way to maintain (or achieve )physical fitness.
　　The most useful sort of exercise is exercise that develops the heart, lungs, and circulatory systems. If these systems are fit, the body is ready for almost any sport and for almost any sudden demand made by work or emergencies. One can train more specifically, as by developing strength for weight lifting or the ability to run straight ahead for short distances with great power s in football, but running trains your heart and lungs to deliver oxygen more efficiently to all parts of your body. It is worth noting that this sort of exercise is the only kind that can reduce heart disease, the number one cause of death in America.
　　Only one sort of equipment is needed – a good pair of shoes. Physicians advise beginning joggers not to run in a tennis or gym shoe. Many design advances have been made in only the last several years that make an excellent running shoe in dispensable if a runner wishes to develop as quickly as possible, with as little chance of injury as possible. A good running shoe will have a soft pad for absorbing shock, as well as a slightly built-up heel and a full heelcup that will give the knee and ankle more stability. A wise investment in good shoes will prevent bilisters and the foot, ankle and knee injures and will also enable the wearer to run on paved or soft surfaces.
　　No other special equipment is needed; you can jog in any clothing you desire, even your street clothes. Many joggers wear expensive, flashy warm –up suits, but just as many wear a simple pair of gym shoes and T-shirt; in fact, many people just jog in last year’s clothes. In cold weather, several layers of clothing are better than one heavy sweater or coat. If joggers are wearing several layers of clothing, they can add or subtract layers as conditions change.
　　It takes surprisingly little time to develop the ability to run. The American Jogging Association has a twelve – week program designed to move form a fifteen-minute walk (which almost anyone can manage who is in reasonable health) to a thirty-minute run. A measure of common sense, a physical examination, and a planned schedule are all it takes.

　　1.They main purpose of this passage is to _____.
　　A.discuss jogging as a physical fitness program
　　B.describe the type of clothing needed for jogging
　　C.provide scientific evidence of the benefits of jogging
　　D.distinguish between jogging as a “common sense “fitness program and a cult (崇拜) movement

　　2.The most useful kind of exercise is exercise that ______.
　　A.trains the body for weigh lifting
　　B.enables a person to run straight ahead for short distances with great power
　　C.is both beneficial and inexpensive
　　D.develops the heart, lungs, and circulatory systems

　　3.We can conclude from this passage that ______.
　　A.because of jogging, heart disease is no longer an American problem
　　B.jogging can be harmful if the runner is not properly prepared
　　C.warm-up suits are preferable to gym shoes and T-shirts
　　D.jogging is bad for the ankles and knees

　　4.The author’s tone ______.
　　A.skeptical B.aggressive C.approving D.purely objective

　　5.As used in this passage, the word “mystical “ means ________.
　　A.awesome B.horrifying C.a spirtual discipline D.vicious

　　答案：ADBCC