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时间：2023-11-17 19:17:48 下载该word文档
2021届韶关市第二中学高三英语第一次联考试卷及答案解析
第一部分阅读（共两节，满分40分）
第一节（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项
A
Canadaisoneofthemostbeautifulcountriesintheworld.Hereare4attractiveplacesworthyourvisit.Churchill
Churchillisatownwiththenickname"PolarBearCapitaloftheWorld”,wheretouristscansafelyviewpolarbearsfromspecialvehiclesintheautumnandwinter.Thousandsofbelugawhales,whichmoveintothewarmerwatersoftheChurchillRiverduringJulyandAugust,areamajorsummerattraction.ChurchillisalsoadestinationforbirdwatchersfromlateMayuntilAugust.
NiagaraFalls
NiagaraFallsisagroupofthreewaterfalls,crossingtheborderbetweenCanadaandtheUnitedStates.ThelargestofthethreeisHorseshoeFalls,alsoknownasCanadianFalls.NiagaraFallsillumination（彩灯）isamustforanyvisitor!Everynightoftheyear,thethreewaterfallsareilluminatedincolor1screatinganattractivescenethatcanbeviewedfromnearandfar.
Vancouver
VancouverisCanada'sthird-largestcity,alwaysnamedasoneofthetopfiveworldwidecitiesforitscomfortableenvironmentandqualityoflife.Vancouverhasanactivenightlifescene,whetheritsfoodanddining,orbarsandnightclubs.Frommid-JunetoearlyJuly,theVancouverInternationalJazzFestivalfeatures300concerts,includingafreeopeningDowntownJazzWeekend.
Ottawa
ThecapitalofCanadaissituatedonthebanksoftheOttawaRiverandhasalotof
Englishbuildingsinit.ItisabeautifulcitywhichhastheParliamentbuildingsonthebanksandEnglishinfluencedhousesandparksaround.TherearemuseumsandartgalleriesthatwillgiveyouacompleteknowledgeoftheEnglishculturethere.ItisreallytheheartofCanada.SoifyouareahistoryandartloverOttawaisthebestchoiceforyourvisitinCanada.
1.Ifyouwanttowatchbirds,whichplacewillyouchoosetovisit?
A.Churchill.B.NiagaraFalls.C.Vancouver.D.Ottawa.2.WhatisthebestseasonforvisitingVancouver?
A.Spring.B.Summer.C.Autumn.D.Winter.3.WhatdoNiagaraFallsandVancouverhaveincommon?A.Theyarebothfamousfornaturalscenery.B.Thebestvisitingtimearebothatnights.C.TheyarebothlocatedinCanadaentirely.D.Theticketstherearebothfreeatweekends.
B
Haveyouevernoticedthatsomepeoplecaneatwhattheywantandstayinshape,whileotherscarefullywatchwhattheyeatandstillputonweight?Howannoying!However,scientistsarebeginningtobelievethatsomepeoplegettheabilitytostaythinfromtheirparents.
Scientistssaythatwhensomepeopleeat,theirbodieswillnaturallystoretheexcessenergyfromfoodasfat.Thesepeoplegainweightiftheyeatmorethantheyneedeachday.Meanwhile,otherpeopleeatmorethantheyneedbuttheirbodiesareableto“burnoff”theextrafoodwithoutmakingfat,sotheyrarelyhaveweightproblems.
Toshowthatthisistrue,scientistshaveexperimentedonlaboratorymice.Theygavethemiceaspecialdietwithalotoffat.Somemicegainedweightwhiletheothermicestayedthin,eventhoughbothgroupsofmiceatethesameamountoffoodandgotthesameamountofexercise.Scientistsconcludedthatweightgainseemedtobeinfluencedbygenetic(基因的factors.Theyalsobelievetheyhavenowidentifiedthegenesthatmaycausethistendency.Thesegenes,accordingtothescientists,getpasseddownthegenerations.Armedwiththisknowledge,theybelieveitmaybepossibletodevelopmedicinesthatcantargetthegenesandstoppeoplefromgainingweight.
Thestudyofweightgainisbecomingmoreimportantas