大学英语B模拟六及参考答案.pdfVIP

大学英语 B 模拟六 Part I: Reading Comprehension (40 points) Directions: There are four passages in this part. Each passage is followed by five questions. For each question there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center. Passage 1 It is reported that 6. 5 million Americans jog for exercise. The popularity of jogging has been heightened by medical claims of the benefits derived from regular participation in this activity. Regular jogging is credited with promoting a “training effect ” which conditions the heart to do more work with less effort; increasing the efficiency of the respiratory ( 呼吸 ) system by strengthening the muscles that assist breathing; increasing blood volume in the body, thereby increasing the oxygen-carrying capacity of the circulatory system; promoting blood vessel flexibility; aiding the digestive system; and helping to maintain proper body weight through the high calorie expenditure. It is reasonable to assume that the number of adult joggers will increase if this activity is properly taught and encouraged through school physical education programs. Children should be taught how to jog as well as to understand the benefits. It is recommended that motivational programs such as the National Varsity Club Sport Award be utilized to provide added incentive ( 刺激 ) for school jogging programs. In addition to learning the physiological effects of training noted above, students should be given the following information as guidelines for their personal jogging programs. Whenjogging, run in an upright position, avoi ding the tendency to le