2019高中英语unit7thesea课时跟踪练（一）warm_up 6页

课时跟踪练(一)Warm-up&Lesson1—Pre-readingⅠ.阅读理解AAbout97%oftheworld'swaterissaltyandisfoundinouroceansandseas.But,aswecan'tdrinkseawater,howcanitbeimportant?Everypartofourseasandoceanscontainsanamazingnumberofanimalsandfishthatliveatdifferentoceandepths.Mostofthedifferentspeciesofanimalsandfishdependonsimpleplantsfortheirfood.Thesesimpleplantscalledalgae(海藻)driftnearthesurfaceoftheoceanandusesunlighttoturncarbondioxideandwaterintofoodandoxygen.Infact,algaeproduceoverhalfoftheoxygenpeoplebreathe.Howimportantseawateris!Eachplantoranimalinourseasandoceansisanimportantlinkinafoodchain.Thealgaeareeateninlargeamountsbymicroscopicanimals,whichareinturnconsumedbylargeranimals.Thesefoodchainsaredelicatelybalanced.Thebadnewsaboutthefoodchainsintheoceansisthattheyareunderthreatbecauseofman.Peopleoncethoughtthattheoceansweresobigthatitdidn'tmatterifwedumpedrubbishintothemorcaughthugequantitiesoffishandwhalesforfood.Butwenowknowthisisnottrue,andfishstocksintheoceanshavestartedtodrop.Thankfully,theworldistakingstepstoprotectthefutureofouroceansbyintroducinginternationalagreementstoprotectmarinehabitats.Mostcountrieshaveintroducedfishingrestrictionstoprotectfishstocksintheoceans,andnewtechniquesarebeingpioneeredtocopewithpollution.Finally,theimportanceofprotectingoceansisbeingmadeknowntomorepeople.Thisisjustthebeginningofalongprocesstoprotecttheoceansforourfuture.Wedependontheoceansforfishwhichareanimportantpartofthehumandiet.Howimportantseawateris!1．Whichofthefollowingistheproperorderofthefoodchain?A．smallanimals→algae→microscopicanimals→largeanimals→manB．algae→microscopicanimals→largeanimals→largeranimals→manC．smallanimals→algae→largeanimals→microscopicanimals→manD．microscopicanimals→algae→largeanimals→largeranimals→man解析：选B　细节理解题。根据第二、三段内容可知答案。n2．Fromthepassage,welearnthat________.A．mostfishandseaanimalsliveatthesurfaceoftheseasB．itisverydifficulttobreakthebalanceofafoodchainC．excessivefishinghascausedthedecreaseinfishstockD．itwon'tbelongbeforetheproblemsconcerningoceanswillbesolved解析：选C　推理判断题。根据第四段中的“...fishstocksintheoceanshavestartedtodrop”可知大量捕捉鱼类肯定会造成鱼类储量的下降；根据第二段首句可知选项A不正确；根据第三段中的“Thesefoodchainsaredelicatelybalanced.”可知选项B不正确；根据最后一段中的“Thisisjustthebeginningofalongprocesstoprotecttheoceansforourfuture.”可知选项D不正确。3．WhichofthefollowingisNOTawaybeingusedtoprotectoceans?A．Theuseofinternationalagreements.B．Forbiddingfishingtoprotectfishstocks.C．Theuseofnewtechniques.D．Raisingpeople'sawarenessoftheneedtoprotectoceans.解析：选B　细节理解题。根据最后一段可知很多国家通过限制捕鱼数量来保护鱼类，但不是禁止捕鱼；其他几种措施在最后一段中都可找到。4．Whatwouldbethebesttitleofthepassage?A．TheimportanceofseawaterB．LifeintheoceansC．HowtoprotectfoodchainsD．Howtodealwithseawaterpollution解析：选A　标题归纳题。根据文章的第一段，以及第二段和最后一段的末句可知文章的中心是在说明海水的重要性。BEarlyinthe16thcenturymenweretryingtoreachAsiabytravelingwestfromEurope.InordertofindAsiatheyhadtofindawaypastSouthAmerica.ThemanwhoeventuallyfoundthewayfromtheAtlanticOceantothePacificwasFerdinandMagellan.MagellansailedfromSevilleinSeptember1519withfiveshipsandabout266men.Thirteenmonthslater,afterspendingaseverewinteronthecoastofPatagonia,hediscoveredthechannelwhichisnowcalledMagellan'sStrait.InNovember1520,aftermanymonthsofdangersfromrocksandstorms,duringwhichntwoshipswerelost,thethreeremainingshipsenteredtheoceanontheothersideofSouthAmerica.Theythencontinued,hopingtoreachAsia.ButtheydidnotseeanylanduntiltheyreachedtheislandsoffthecoastofAsia.Beforetheyarrivedattheseislands,laterknownasthePhilippines,hismenweredyingofstarvation.WhiletheywerestayinginthePhilippines,Magellanwaskilledinbattle.TheremainingofficersthenhadtogetbacktoSpain.TheydecidedtosailroundAfrica.Aftermanydifficulties,oneshipwitheighteenmensailedintoSevillethreeyearsafterleaving.TheywereallthatremainedofMagellan'sexpedition.However,theirachievementwasgreat.Theywerethefirstmentosailroundtheworld.语篇解读：本文主要讲述的是麦哲伦及其船队第一次从欧洲向西航行到亚洲进而完成环球航行的探险之旅。5．ThepurposeofMagellan'sexpeditionwas________.A．tosailroundtheworldB．tofindasearoutetoIndiaC．tomakeavoyagetoAsiaD．tocarrymentoPhilippines解析：选C　细节理解题。根据第一段的内容，我们可以知道，欧洲人试图向西航行，经大西洋到太平洋，然后到达亚洲，从而找到一条从海上去亚洲的路线。6．ThetimeMagellan'sStraitwasdiscoveredwas________.A．inAugust1519B．inOctober1520C．inNovember1520D．notmentioned解析：选B　细节理解题。根据第二段前两句内容可知，麦哲伦是在1520年10月发现Magellan'sStrait“麦哲伦海峡”的。7．WhichofthefollowingisNOTmentionedinthepassageconcerningtheexpedition?A．Lackofnavigationequipment.B．SeverewinterinPatagonia.C．ThedeathofMagellan.D．Dangersfromrocksandstorms.解析：选A　细节理解题。通读全文我们可以发现，全文没有提及navigationequipment“航海设备”方面的问题。故选A。8．Whatisthebesttitleforthepassage?A．Magellan'sExpeditionnB．TheDiscoveryofthePhilippinesC．TheMostDangerousExpeditioninNavigationD．TheFirstExpeditiontoAsia解析：选D　主旨大意题。本文主要讲述的是麦哲伦及其船队第一次从海上去亚洲的探险之旅。故D为最佳选项。CForyears,thegiantsquid(大王乌贼)hadremainedamodernmystery.Livinginthedarkdepthsoftheocean,thecreatureisdifficultforscientiststoobservedirectly.Ithadalsomanagedtoavoidallattemptstofilmit.ThatchangedlastJuly:forthefirsttimeever,scientistswereabletocatchthegiantsquidonvideoinitsnaturalhabitat.Theywereamazedbywhattheysaw.ThescientistsfilmedthesquidintheNorthPacificOcean,southofTokyo,Japan.Theyfolloweditdowntoadepthof2,952feet.Theyshotmorethan23minutesofvideobeforethesquidswamoffintoevendarkerdepths.ThevideofootagewillbereleasedtothepubliclaterthismonthonTheDiscoveryChannel.TsunemiKubodera,azoologistatJapan'sNationalMuseumofNatureandScience,ledtheteamthatfilmedthesquid.Theteamwentintotheoceaninasmallsubmarinewithlightsinvisibletobothhumansandsquid.Sincegiantsquideatsmallersquid,thescientistsreleasedasmallsquidasbait(诱饵).Thenthescientistswaitedinthepitchblackforthegiantsquidtoapproach.Thecolorvideoshowsthecreaturefloatingvertically,eatingthebaitsquid.Thegiantsquidis9to10feetlongandismissingitstwolongesttentacles(触须).Withthosetentacles,itcouldhavemeasuredupto26feetlong.Ithashugeblackeyes,thesizeofdinnerplates,“Itwasshiningandsobeautiful，”Kuboderasaid.Becausethedeepoceanissounfriendlytohumans,littleisknownaboutthegiantsquid.Scientistssaycatchingthemysteriouscreatureonvideoisanimportantsteptowardunderstandingit.Forcenturies,sailorshadreportedseeingahuge,oceandwellingbeast,thoughttobethegiantsquid.ThecreatureisalsobelievedtobethesubjectoftheNordicmythofthekraken,aseacreaturethatsupposedlyattackedshipsinScandinavianwatersoverthepastthousandsofyears.语篇解读：本文是一篇科普类说明文。大王乌贼生活在深海，人们很难有机会看到它，长期以来人们对它知之甚少。最近科学家在深海拍摄到了这种神秘的生物，有望揭开其神秘的面纱。n9．Whyisitdifficulttofilmthegiantsquid?A．Becauseitisillegaltofilmthegiantsquid.B．Becauseitistooexpensivetomakesuchafilm.C．Becausethegiantsquidlivesinthedarkdeepocean.D．Becausethegiantsquidisdangeroustohumans.解析：选C　细节理解题。根据第一段中的“Livinginthedarkdepthsoftheocean,thecreatureisdifficultforscientiststoobservedirectly.”可知，因为大王乌贼生活在大洋深处，所以人们很难拍摄到它。10．Wecanlearnfromthefirstparagraphthatscientists________.A．firstsawthegiantsquidintheoceanB．discoveredanewseacreatureintheoceanC．havetheoceanbottomsecretlyrecordedonvideoD．havefirstcaughtthelegendarygiantsquidonvideo解析：选D　细节理解题。根据第一段内容可知，科学家在北太平洋下到深度为2952英尺的地方第一次拍摄了一段23分钟长的有关大王乌贼的视频。因此D项正确。11．Accordingtothepassage,thegiantsquid'slongesttentaclescanbe________.A．16to17feetlong　　　B．9to10feetlongC．morethan26feetlongD．about36feetlong解析：选A　细节理解题。根据第三段内容可知，这只大王乌贼有9到10英尺长，算上它的触须可达到26英尺长，由此可得出这只大王乌贼最长的触须有16到17英尺长。12．Thescientistsreleasedasmallsquidintheoceanto________.A．increasethenumberofthegiantsquidB．trickthegiantsquidintocomingoutC．makeaneducationalfilmaboutitD．showconcernforthegiantsquid解析：选B　细节理解题。根据第二段中的“Sincegiantsquideatsmallersquid,thescientistsreleasedasmallsquidasbait.”可知，科学家在大洋里放一条小乌贼目的是将大王乌贼引诱出来。Ⅱ.阅读七选五Didyoueverlookatyourparentsandwishtheywerehealthier?You'renottheonlyone.Wedidasurveyofkids.__1__69%ofthekidswouldliketheirparentstomakechangestobehealthier.Wealsosurveyedparents.They'dworkextrahardtogethealthier,iftheirkidsaskedthemto.Herearethetipsontalkingtoyourparentsabouttheirhealthhabits.n▲Createanidealist.Trytorememberwhatgotyouthinkingaboutthistopic.Isthereanunhealthythingyou'dliketoseethemstopdoing,ordolessoften?Getyourlisttogether.▲Practicehowtosayit.Changingcanbehard.Andit'snotalwayseasytoheatthatsomeoneyoulovethinksyouneedtodoit.__2__Ifyourparentswantedyoutomakeachange,howwouldyoulikethemtoask?Agentle,earingwayoftenworksbest.▲__3__Inoursurvey,85%ofkidssaidthey'sbewillingtomakehealthychangesifitwouldhelpthewholefamily.Youmightbewillingtogoforawalktogetherafterdinner,letyourparentsknowyou'rewillingtomakeaneffort.▲Makeadecision.__4__Itcanbetroubleifyourgoalistoogeneraloryoudon'thavestepsinmind.▲__5__Encourageyourparentsasthefamilystartsmakingchanges.Anextrahugorahomemadecardofencouragementcangivethemwhattheyneedtokeepgoingdownthehealthyroad.A．Cheerthemon.B．Bewillingtohelp.C．Findtherightpersontotalkwith.D．Parentscaremoreabouttheirkids'health.E．Ithelpstopickasinglegoalandbedetailed.F．46%saidtheyworryabouttheirparents'health.G．Soyou'llwanttobringupthistopicinjusttherightway.答案：1～5　FGBEA