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1、第一篇关于减肥SectionA Directions:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinbankisidentifiedbyaletter.Pleasemarkthecorres
2、pondingletterforeachitemonAnswerSheet2withasinglelinethroughthecenter.Youmaynotuseanyofthewordsinthebankmorethanonce. Questions47to56arebasedonthefollowingpassage. PerhapslikemostAmericansyouhavesomeextrapoundsto47.Youmayevenhavetriedafaddietortwo,butfoundyourselfrightbackwh
3、ereyoustarted.Thekeytoweightlossisregular48activity.Andsurprisingly,youdon'thavetogiveupeatingormakethegymyoursecondhometoseelong-term,49effects. Youbodyneedsacertainamountofenergytomaintainbasic50suchasbreathing,bloodcirculationanddigestion.Theenergyrequiredtokeepyourorgansf
4、unctioningisreferredtoastherestingorbasalmetabolicrate. Anytimeyouareactive,51energyisrequired.Itisobtainedfromglycogenandfatstoredintheblood,liver,andmuscles.Thekeytolosingweightistodrawonthefatratherthanonthecarbohydratereserves. Whichofthetwoenergysourcesyouusedependsonth
5、eintensityand52ofyouractivity.Thehighertheintensity,themoreyourbodywillpullfromthestoredcarbohydrates.Thelowertheintensity,themoreyourbodywill53onfatasitsfuel. Aerobicexerciseismost54forweightloss.Whenyouperformaerobicactivitiesyou55contractlargemusclegroupssuchasyourlegsanda
6、rms.Walking,running,rollerblading,swimming,dancing,andjumpingjacksareallformsofaerobicactivity. Surprisingly,ifyouraerobicactivityislowtomoderatelyintenseandoflongduration,youwillburnmorefatthanifyouhad56inashortburstofhigh-intensityexercise.Inshort,abrisk30-minutewalkwillbur
7、nfatwhilea100-yardsprintwillburnglycogen. [A]positive[B]additional[C]duration[D]effectivee[E]shed[F]physical [G]food[H]functions[I]participated[J]rely[K]cut[L]repeatedly [M]uses[N]little[O]obvious47.E该空需填入动词原形，结合原意“和大多数美国人一梯状，你(的体重)可能也有几磅需要________”可知，E(去除)最符合文意。 48.F结合常识和
8、下文可知，F最符合文意。 49.A结合句意“令人惊奇的是，为了看到长期________效果你不必节食或常去健身馆”，可知
