2018-2019学年高中英语 Unit 21 Human Biology 课时跟踪练（三）Less

1EvaluationWarning:ThedocumentwascreatedwithSpire.Docfor.NET.课时跟踪练(三)Lesson2&Lesson3—PrereadingⅠ.阅读理解ASpeedwalkinghasnowbecomepartofmydailyroutineforsixyears.Iamalwayskeentodoitregularlywithoutabreak.EventhoughIamneitheraphysiciannoraspecialistinmedicalscience,Iamfullyawarethatexercise,especiallyspeedwalking,helpsmaintainhealthandlowersthechanceoffallingill.Iurgeeverybodytospeedwalkonadailybasis,withonedayoffaweek,oratleasttodoitthreetimesaweek.Imanagedtoburnaround17kgoffataftertakingupspeedwalking.Thisshouldalsobeaccompaniedwithachangeindiet.Weneedtoreducehowmuchweeatandavoidjunkfood,sweetsandcarbonatedrinks.Reducingtheamountoffoodweeatintheeveningbyaround80percentandincreasinghowmuchwaterwedrinkarealsogoodpractice.Overeatingshouldalsobeavoided.Iusuallywalkataspeedof1kmper8.5minutes.Itwillinitiallymakeyoutired.However,overtimeitwillbecomeahabitandanaddiction.Thistypeofexercisewillhelpyoumentally,willalsohelpyousleepandgiveyouanappetite.Itwillmakeyouphysicallyfitandhelpburnfat.Speedwalkingmakesyouhealthyandeveryonecanfindtimetowalk.Theproblemisthatsomepeopledonotplantheirdaysanddonot,therefore,findtime.Wecangainhealthandsocialbenefitsfromspeedwalking.Itwillhelpchangeourlifestyles,fightdiabetes,obesityandotherillnesses.Argumentssuchas“Iamtoooldandobesetowalk”donothold_water.Peopleofanyagewhospeedwalkwillseethebenefitswithinacoupleofmonths.Walkingoutdoorsisidealanditisbestdoneinthecompanyoffriends.语篇解读：本文是说明文。每天坚持快走被越来越多的人作为日常锻炼的一种方法。快走不仅可以减去身上多余的脂肪、走出好的身材，还可以预防疾病、走出健康。1．Whatcanbethebesttitleforthepassage?A．BenefitsofspeedwalkingB．MysuccessinreducingweightC．ThehistoryofspeedwalkingD．Tipsonhowtokeephealthy解析：选A标题归纳题。作者在文中介绍了快走的益处，并且通过自身的实例进行说2明，故选A。2．Itcanbeinferredfromthefourthparagraphthat________.A．speedwalkingpossiblyleadstoaneatingdisorderB．manypeoplearetoobusytohaveafastwalkeverydayC．morecaloriesandfatwillresultinseriousillnessesD．speedwalkingcaneffectivelycurekindsofdiseases解析：选C推理判断题。依据第四段的第二句可知，快走有助于燃烧脂肪；依据尾句可知，快走会帮助改变我们的生活方式，有助于抵抗糖尿病、肥胖和其他疾病。由此可推知，过多的热量和脂肪会导致疾病发生。3．Whatdoestheunderlinedpart“holdwater”mean?A．Haveadrink.B．Makesense.C．Workout.D．Buildup.解析：选B词义猜测题。依据下文可知，不管多大年龄的人，在快走几个月后就会看到快走的益处。因此此处指那些人说自己太老太胖而不能快走是没有意义的。BMostofusarefamiliarwiththe“SilkRoad”，anetworkoflandtradingrouteswhichconnectednorthwesternChinatoEuropesincetheHandynasty.Withitsrecentpopularity,youmayhaveheardofthe“TeaHorseRoad”aswell,anothernetworkoflandtradingroutesthatalsoconnectedChinatovariouspartsofAsiaandEuropebeforesailingbecamecommon.Historically,the“TeaHorseRoad”isnolessimportantthanthe“SilkRoad”，andbecauseoftheirdifferentlocations,the“TeaHorseRoad”issometimesreferredtoas“theSouthernSilkRoad”．The“TeaHorseRoad”hasgotitsnameasChineseteaandhorseswerethemainproductstradedalongtheroute(togetherwithmedicine,salt,clothandskins)．Historianshavetracedtheoriginsofthe“TeaHorseRoad”backtotheTangdynasty,whenteawasbeingtransportedoutofYunnantoBeijing,Tibet,andotherSoutheastAsiancountries.The“TeaHorseRoad”wasfurtherdevelopedduringtheSongandMingdynasty,andremainedakeytradingrouteforPu'erteaandothergoodsuntiltheQingdynasty.Likethe“SilkRoad”，the“TeaHorseRoad”wasnota“road”byitself,butanetworkofroutesspreadingoutofYunnan'sPu'erCounty.Initsmorethan1,200yearsofhistory,the“TeaHorseRoad”servednotonlyasatradingroute,butalsoabridgeconnectingdifferentraces(种族)—politically,economicallyandculturally.3Today,the“TeaHorseRoad”isahotspotfortourists.Historyaside,the“TeaHorseRoad”islocatednear“TheThirdPoleoftheEarth”and“TheRoofoftheEarth”，makingitaspotofmanyattractions.语篇解读：本文是说明文。茶马古道是指存在于中国西南地区的民间国际商贸通道，是中国西南民族经济文化交流的走廊，也是早期沟通中国西南地区和亚欧商贸的重要通道。4．Whatdoweknowaboutthe“TeaHorseRoad”？A．ItdatesbacktotheTangdynasty.B．Itwasbuiltearlierthanthe“SilkRoad”．C．ItwasbuiltfortradinginSouthernChina.D．Itenjoyedgreaterpopularitythanthe“SilkRoad”．解析：选A细节理解题。由第二段“Historianshavetracedtheoriginsofthe‘TeaHorseRoad’backtotheTangdynasty...”可知，茶马古道是从唐朝时开始的。5．Whereisthestartingpointofthe“TeaHorseRoad”？A．Tibet.B．Beijing.C．Pu'erCounty.D．Europe.解析：选C细节理解题。由第三段“...butanetworkofroutesspreadingoutofYunnan'sPu'erCounty.”可知，茶马古道的起点是中国云南的普洱县。6．The“TeaHorseRoad”isnowmostpopularwith________.A．businessmenB．explorersC．historiansD．tourists解析：选D细节理解题。由最后一段“Today,the‘TeaHorseRoad’isahotspotfortourists.”可知，茶马古道现在是深受旅游者青睐的景点。CIfyouneedonemorereasontobethankful,hereitis.OnerecentstudyfromtheUniversityofCaliforniaSanDiego'sSchoolofMedicinefoundthatpeoplewhoweremoregratefulactuallyhadbetterhearthealth.“Theyshowedbetterwell­being,alessdepressedmood,lesstirednessandtheysleptbetter，”saidthestudy'sauthor,PaulJ．Mills.ResearchersattheuniversitiesofUtahandKentuckyobservedthatstressed­outlawstudentswhocharacterizedthemselvesasoptimisticactuallyhadmoredisease­fightingcells(细胞)intheirbodies.RobertEmmons,aprofessoratUCDavis,saidthere'sevenmoreevidence.Peoplewhokeepagratitudejournalhaveareducedfatintake—asmuchas25percentlower.Stresshormones(激素)likecortisolare23percentloweringrateful4people.Andhavingadailygratitudepracticecouldactuallyreducetheeffectsofagingtothebrain.“Beingthankfulhassuchabigeffectbecauseofthefeeli