公共英语四级
填空题根据下面资料，回答题
Walking--like swimming, bicycling and running--is an aerobic exercise, (21)______
builds the capacity for energy output and physical endurance by increasing the supply of oxygen to skin and muscles. Such exercises may be a primary factor in the (22) ______of heart and circu-latory disease.
As probably the least strenuous, safest aerobic activity, walking is the (23) ______accepta-ble exercise for the largest number of people. Walking (24) ______comfortable speed improves the efficiency of the cardiorespiratory system (25)______ stimulating the lungs and heart, but at a more gradual rate than most other forms of exercise.
In one test, a group of men 40 to 57 years of age, (26) ______ at a fast pace for 40 mi-nutes four days a week, showed improvement (27) ______to men the same age on a 30 minute,three-day-a-week jogging program in the same period. Their resting heart rate and body fat de-creased (28)______ . These changes suggest some of the importanteven vital--benefits walk-ing can bring about.
Walking (29)______burns calories. It takes 3,500 calories to gain or lose one pound.
Since a one-hour walk at a moderate pace will (30) ______up 300 to 360 calories. By walking one hour every other day, you can burn up a pound and a half monthly, or 18 pounds(31)______ --providing there is no change in your intake of food. To (32)______ weight faster, walk an hour every day and burn up 3 pounds a month, or 36 pounds a year.
Whatever your age, right now is the time to give your physical well-being as much thought as you (33) ______to pensions or insurance. Walking is a vital defense (34)_______ the ravages of degenerative diseases and aging. It is nature´s (35)______ of giving you a tuneup.
第21题答案
Walking--like swimming, bicycling and running--is an aerobic exercise, (21)______
builds the capacity for energy output and physical endurance by increasing the supply of oxygen to skin and muscles. Such exercises may be a primary factor in the (22) ______of heart and circu-latory disease.
As probably the least strenuous, safest aerobic activity, walking is the (23) ______accepta-ble exercise for the largest number of people. Walking (24) ______comfortable speed improves the efficiency of the cardiorespiratory system (25)______ stimulating the lungs and heart, but at a more gradual rate than most other forms of exercise.
In one test, a group of men 40 to 57 years of age, (26) ______ at a fast pace for 40 mi-nutes four days a week, showed improvement (27) ______to men the same age on a 30 minute,three-day-a-week jogging program in the same period. Their resting heart rate and body fat de-creased (28)______ . These changes suggest some of the importanteven vital--benefits walk-ing can bring about.
Walking (29)______burns calories. It takes 3,500 calories to gain or lose one pound.
Since a one-hour walk at a moderate pace will (30) ______up 300 to 360 calories. By walking one hour every other day, you can burn up a pound and a half monthly, or 18 pounds(31)______ --providing there is no change in your intake of food. To (32)______ weight faster, walk an hour every day and burn up 3 pounds a month, or 36 pounds a year.
Whatever your age, right now is the time to give your physical well-being as much thought as you (33) ______to pensions or insurance. Walking is a vital defense (34)_______ the ravages of degenerative diseases and aging. It is nature´s (35)______ of giving you a tuneup.
第21题答案
参考答案：暂无进入在线模考
参考译文
行走就像游泳、骑自行车和跑步一样，是一种有氧运动，可以通过给皮肤和肌肉增加供氧而塑造更大的肺活量和耐力。这样的运动可能是防止心脏和血液循环疾病的一个主要因素。
作为可能是最不费力气、最安全的有氧运动，绝大多数人认为行走可以接受。以舒适的速度行走可以通过激活肺部和心脏增强心肺系统的效率，但比起大多数其他的锻炼形式，行走的速度更为舒缓。
在一项测试中，一组40到57岁的男予每周4天快速行走40分钟，与同样年龄每周同期进行3次30分钟慢跑的男子收到了同样的改善效果。他们的正常心率和身体脂肪明显降低。这些变化表明行走可以带来重要的，甚至是关键的益处。
行走也可以燃烧热量。获得或失去一磅重量需要消耗3500卡热量。
因为以中等速度走一小时的路程将会消耗300到360卡的热量。每隔一天行走一小时，则每月可以减去一磅半的脂肪，或者说一年可以减去18磅脂肪，只要您每日摄入的食物量不变。为了更快减去体重，每天行走一小时，那么每月就可以减去3磅脂肪，一年就是36磅。
不管您的年龄有多大，现在都应该花同样时间考虑身体和养老金或保险。行走是一种关键的抵御疾病和抗衰老的方法。它是自然界给您的一种调整的方式。
答案及解析
which【解析】此空前一句意为“行走就像游泳、骑自行车和跑步是一种有氧运动”，此空所在句意为“…通过增加给皮肤和肌肉的供氧而塑造更大的肺活量和耐力。”由这两句可知，此空应填which，which引导定语从句，修饰“anaerobic exercise”。
行走就像游泳、骑自行车和跑步一样，是一种有氧运动，可以通过给皮肤和肌肉增加供氧而塑造更大的肺活量和耐力。这样的运动可能是防止心脏和血液循环疾病的一个主要因素。
作为可能是最不费力气、最安全的有氧运动，绝大多数人认为行走可以接受。以舒适的速度行走可以通过激活肺部和心脏增强心肺系统的效率，但比起大多数其他的锻炼形式，行走的速度更为舒缓。
在一项测试中，一组40到57岁的男予每周4天快速行走40分钟，与同样年龄每周同期进行3次30分钟慢跑的男子收到了同样的改善效果。他们的正常心率和身体脂肪明显降低。这些变化表明行走可以带来重要的，甚至是关键的益处。
行走也可以燃烧热量。获得或失去一磅重量需要消耗3500卡热量。
因为以中等速度走一小时的路程将会消耗300到360卡的热量。每隔一天行走一小时，则每月可以减去一磅半的脂肪，或者说一年可以减去18磅脂肪，只要您每日摄入的食物量不变。为了更快减去体重，每天行走一小时，那么每月就可以减去3磅脂肪，一年就是36磅。
不管您的年龄有多大，现在都应该花同样时间考虑身体和养老金或保险。行走是一种关键的抵御疾病和抗衰老的方法。它是自然界给您的一种调整的方式。
答案及解析
which【解析】此空前一句意为“行走就像游泳、骑自行车和跑步是一种有氧运动”，此空所在句意为“…通过增加给皮肤和肌肉的供氧而塑造更大的肺活量和耐力。”由这两句可知，此空应填which，which引导定语从句，修饰“anaerobic exercise”。
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