[单项选择]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 as 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
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

[单项选择]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 as 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
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

[单项选择]

Jogging has become most popular in America. Many theories have been raised to explain its (36) . The plain truth is that jogging is (37) , quick and efficient to (38) physical fitness.
The most useful sort of exercise is exercise that (39) the heart, lungs, and circulatory system. If these systems are (40) , the body is ready for almost any sport and for almost any sudden (41) . One can train more specifically, (42) by developing strength for weight lifting (43) the ability to run straight ahead (44) short distances with great power as in football, (45) running trains your heart and lungs to deliver oxygen more efficiently (46) all parts of your body. It is (47) noting that this sort of exercise is the only kind that can (48) heart disease, which is the number one (49) of death in America.
(50) one sort of equipment is needed—a (51) of good shoes
A. action
B. demand
C. requirement
D. movement