2014年公共英语五级考试阅读模拟试题及答案(3)

2014-03-18 22:03:00来源:网络

  Walking-like swimming,bicycling and running--is an aerobic exercise,(31)___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(32) ___0f heart and circulatory disease.

  As probably the least strenuous,safest aerobic activity,walking is the(33) ___acceptable exercise for the largest number of people.Walking(34) ___comfortable speed improves the efficiency of the cardio respiratory system(35) ___stimulating the lungs and heart,but at a more gradual rate(36) ___most other forms of exercise.

  In one test,a group of men 40 t0 57 years of age,(37) ___at a fast pace for 40 minutes four days a week,showed improvement(38) ___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 decreased(39) ___.These changes suggest(40) ___of the important-even vital--benefits walking can(41) ___about.

  Walking(42) ___burns calories.It takes 3,500 calories to gain or(43) ___0ne pound.Since a one.hour walk at a moderate pace will(44) ___up 300 t0 360 calories.By walking one hour every other day,you Can burn up a pound—and—a—half monthly,or l8 pounds(45) ___-providing there is no change in your in-take of food.To(46).___weight faster,walk an n hour every day and bum up 3 pounds a month,or 36 pounds a year.

  (47) ___your age,right now is the time to give your physical well-being as much thought as you(48) ___to pensions or insurance.Walking is a vital defense(49) ___the ravages of degenerative diseases and aging.It is nature’s (50) ___of giving you a tuneup.

 

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