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.- P9 J( d7 J @: E8 k" T. ^% h, I
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.
+ M8 h; y4 q; V' F 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.$ H* Q3 ?: X& v" g2 F" f7 u
(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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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。
& D! U5 R* A ~0 f, _' Y 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。9 `; v, F6 \+ x! s! O* e) v
在一项测试中,一组40到57岁的男子每周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。
3 w' Q0 z% ~8 e: H 行走也可以燃烧热量。获得或失去一磅重量需要消耗3 500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l8 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。" P7 i6 j8 `/ ~0 N
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。! C5 E/ p- i+ x$ D" j- T
答案及解析:
; f+ @, U) Z* m# {$ V+ `9 m 31.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引导定语从旬,修饰“all—aerobic exercise”。" N) h( U* X& L" r5 q9 M
32.prevention 【解析】本句意为“这样的运动可能是…心脏和血液循环疾病的一个主要因素。”显然,此空处应填“防止”。$ w5 D2 c- E% K
33.most 【解析】由本句中的“the least strenuous,safest…”可知,此空处应填表示程度的最高级,再由acceptable exercise“接受的运动”可知应填most。
" R8 B. T$ {3 r: K' {; z& z 34.at 【解析】“以舒适的速度行走”用英语说应是“walking at a comfortable speed”,介词应用at。
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: a, f* a/ l( c# m; q0 o 35.by 【解析】显然,由本句句意可知此空处应填一个表示“通过”的介词,应用介词by。 |