Exercise is good for you, but most people really know verylittle about how to exercise properly. 1_ when you try, you canrunsintostrouble.
    Many people 2_ that when specific muscles are exercised, thefat in the neighbouring area is“ 3_ up”.Yet the 4_ is thatexercise burns fat from all over 5_ .
    Studies show muscles which are not 6_ lose their strength very quickly.To regain it needs 48 to72 hours and exercise every other day will 7 _a normal level of physical strength.
    To 8 _weight you should always“work up a good sweat”when exercising. 9_ sweating only 10_body temperature to prevent over heating.This is 11 _water loss. 12_ You replace the liquid, youreplace the 13_ .
    Walking is the best and easy-to-do exercise.It helps the circulation of blood 14_ the body, andhas a direct 15_ on your overall feeling of health.Experience says that 20 minutes’ 16_ 17 _isminimun amount.
    18_ your breathing doesn’t return to normal state within minutes after you finish 19_ , you’vedone 20_ .
    1.A.While B.When C.As D.So
    2.A.understand B.believe C.hope D.know
    3.A.built B.burned C.piled D.grown
    4.A.reply B.possiblility C.truth D.reason
    5.A.arm B.leg C.stomach D.body
    6.A.exercised B.examined C.protected D.cured
    7.A.lose B.raise C.burn D.keep
    8.A.lose B.gain C.keep D.burn
    9.A.Certainly B.No C.Fortunately D.Probably
    10.A.raises B.reduces C.destroys D.keeps up
    11.A.how B.why C.nothing but D.more than
    12.A.While B.Once C.As D.Whenever
    13.A.weight B.muscle C.sweat D.strength
    14.A.over B.around C.throughout D.with
    15.A.effect B.use C.usage D.affect
    16.A.education B.sleep C.exercise D.rest
    17.A.one day B.a day C.everyday D.someday
    18.A.But if B.But C.If D.And if
    19.A.working B.walking C.exercising D.breathing
    20.A.enough B.much C.too much D.much too
    1.【答案】D
    【解析】因?yàn)榇蟛糠秩瞬恢廊绾握_鍛煉，所以，人們?cè)谟?xùn)煉時(shí)常會(huì)遇到麻煩。句中you表示泛指。
    2.【答案】C
    【解析】“希望“鄰近的脂肪消耗掉，在此符合語境；understand，know不合邏輯，因?yàn)?，即已”明白“，就不?huì)不符合事實(shí)真相；believe表示的是人的得一種看法，而看法有對(duì)有錯(cuò)。
    3.【答案】B
    【解析】下一句中再現(xiàn)了burn這一詞。
    4.【答案】C
    【解析】truth本意為“真理”，此處引申為“事實(shí)”——指實(shí)際鍛煉時(shí)脂肪消耗的情形。余者不合文意。
    5.【答案】D
    【解析】余者不能概全
    6.【答案】A
    【解析】根據(jù)常識(shí)可知，“不鍛煉的肌肉會(huì)很快喪失力量。
    7.【答案】D
    【解析】根據(jù)前一句“要重新獲得力量需要48到72個(gè)小時(shí)可知，每隔一天鍛煉一次可保持正常水平的體力?！?BR>    8.【答案】A
    【解析】本句意思是“為了——體重，人們應(yīng)該通過鍛煉來出汗”。空格處顯然應(yīng)該是“減少”。而不是“增加”或”“保持”，更不可能是“燃燒”。
    9.【答案】B
    【解析】表示對(duì)該節(jié)首句看法的否定。首句看法的錯(cuò)誤性可從下文推知。
    10.【答案】B
    【解析】根據(jù)to prevent over heating可知，sweating的作用是降低體溫。
    11.【答案】C
    【解析】loss是名詞，故前面不能填連接副詞how和why；more than“不只是”，不合文意。本題應(yīng)選nothing but，全句的意思為“這(即sweating)只是人體內(nèi)水分的消耗”。
    12.【答案】B
    【解析】意思是“一旦”，引起時(shí)間狀語從句，余者不合文意。
    13.【答案】A
    【解析】由To lose weight you should…可推知，余者不在本節(jié)論及范圍之內(nèi)。
    14.【答案】C
    【解析】throughout the body遍及全身。余者不合文意。
    15.【答案】A
    【解析】have effect on“對(duì)……產(chǎn)生影響”，合乎文意，合乎搭配。
    16.【答案】C
    【解析】本節(jié)主要講的是鍛煉形式之一——散步。另從最后一節(jié)中也能得到暗示。
    17.【答案】B
    【解析】根據(jù)常識(shí)和語境可知，“每天”(而不是某一天)至少得散步20分鐘。另everyday是形容詞，不能作狀語。
    18.【答案】A
    【解析】與上一句中minimum amount形成對(duì)比，if引導(dǎo)條件句。
    19.【答案】C
    【解析】本節(jié)是上一節(jié)內(nèi)容的繼續(xù)，論述的仍是“鍛煉”。walking不能概括全面，應(yīng)舍去。
    20.【答案】C
    【解析】指出原因——“(運(yùn)動(dòng))過量”。enough，much表意不清，much too后應(yīng)接其它詞。