2019-2020年九年级上学期英语期中复习(7)C-篇练习10篇

2019-2020年九年级上学期英语期中复习（7）C篇练习10篇Whyshouldwehavegoodtablemanners（行为）?Theymakeeatingmorepleasant.Noneofus,forexample,reallywanttowatchanotherpersonchewfoodwithhisorhermouthopen.Sohereareafeweasyrulestogetyouthroughanymealwithoutdispleasingyourtablemates. 1.Putyournapkin（餐巾）inyourlap（大腿前部）assoonasyousitdownandleaveitbesideyourplatewhenyouhavefinishedeating. 2.Situpstraight.Itwillhelpyoudigest（消化）yourfood,andit’spolite. 3.Whenyouareaguest,takeasmallpartofeverythingthatisserved.Yourparentsmaynotexpectyoutoeatsomethingyoudon’tlike,butotherswillexpectyoutotakeasmallpart.Noonewillsayanythingifyoudon’tfinishit. 4.Useyournapkinonyourmouthaftereatingsolidfoodandbeforedrinkingliquids. 5.Say“Please”and“Thankyou”whenaskingsomeonetopassyousomething.Passfoodwithoutdelay(延迟)toothers. 6.Don’tchewfoodwithyourmouthopen.Thisalsomeansnottalkingwithyourmouthfull. 7.Don’tsaythatyouhateacertainfood.Someoneworkedhardtoprepareitanddidn’tlikehearingthis. 8.Don’twaveyoureatingutensils(用具)aroundwhenyouareeatingorarerestingbetweenbites.Putthemonyourplate. 9.Cutfoodintosmallpieces,onepieceatatime.Onlybabieshavetheirfoodcutupatonce—andtheirparentsonlydothattosavetime. 10.Asktobeexcusedwhenyouarereadytoleavethetable.55.Whenyouhavefinishedeating,______.A.youshouldsaygoodbyetoothersB.youshouldputthenapkinbesideyourplateC.youshouldsaysorryatonceD.youcanleavethetableimmediately56.Ifyouareinvitedtodinner,______.A.youcansitanywhereasyoulikeB.youhadbettertasteeverykindofthefoodC.youshouldlistentoyourparentsD.youshouldeatyourfavoritefoodonly57.Accordingtothepassage,whichofthefollowingisNOTtrue?A.Beforedrinkingliquids,youshoulduseyournapkinonyourmouth.B.It’sbadmannerstoholdyourbowlorglassinyourhandandshakethem.C.Youshouldpasssomethingtoothersbeforeaskingthemtopassyouwhatyouneed.D.Youshouldn’tcutyourfoodintosmallpiecesallatonceunlessyouareaverylittlechild.55.B56.B57.CC—2Inmodernsocietythereisalotofdisagreementaboutpetition.Somevalueithighly,believingthatitisgoodforsocialprogress.Otherssaythatpetitionisbad.Itsetsonepersonagainstanother.Anditleadstounfriendlyrelationshipbetweenpeople.Ihavetaughtmanychildrenwhobelievethattheirself-worthdependedonhowwelltheydidattennisandotherskills.Forthem,playingwellandwinningareoftenlife-and-deathmatters.Intheirsingle-mindeddreamofsuccess,thedevelopmentofmanyotherhumanqualities（品质）issadlyforgotten.However,whilesomeseemtobelostinthedesire（渴望）tosucceed,otherstakeadifferentattitude.Inaculturewhichvaluesonlythewinners,theyarestronglyagainstpetition.Amongthemostvocalareyoungsterswhoareunderpetitivepressures（压力）fromtheirparentsorsociety.Theyarealwaystoldtobethetopones,buttheythinkit’sreallyhard.WhenIteachtheseyoungpeople,Ioftenfindtheminadesiretofail.Theyseemtosearchforfailure（失败）bynottryingtowinorachievesuccess.Bynottrying,theyalwayshaveanexcuse:“Imayhavelost,butitdoesn’tmatterbecauseIreallydidn’ttry.IfIhadtriedandlost,thatwouldmeanalot.”Clearly,thisbeliefisthesameasthatofthetruepetitorswhotrytoprovethemselves.Botharebasedonthemistakenbelief.Theythinkone’sself-respectdependsonhowwellonedoesparedwithothers.Bothareafraidofnotbeingvalued.Onlyasthisfearbeginstodissolve(消除)canwediscoveranewmeaninginpetition.

54.Whydosomepeoplewelepetitionaccordingtothepassage?

A.Itpushessocietyforward.

B.Itimprovesone’sabilities.C.Itdevelopshumanqualities.

D.Itbuildsupfriendlyrelationship.

55.Theunderlinedphrase“themostvocal”inParagraph3means_____.

A.thosewhotrytheirbesttowinB.thosewhovaluepetitionmosthighlyC.thosewhodependonothersmostforsuccessD.thosewhoareagainstpetitionmoststrongly56.Whichofthefollowingmaythewriteragreeto?

A.Everyeffortshouldbepaidback.

B.petitionshouldbeencouraged.

C.Winningshouldbealife-and-deathmatter.

D.Fearoffailureshouldbetakenawayinpetition.57.Whatdoesthispassagemainlytalkabout?

A.petitionhelpstosetupself-respect.

B.petitionisbadforsocialdevelopment.C.Ideasaboutpetitionaredifferentamongpeople.D.Failuresarenecessaryexperiencesinpetition.54.A55.D56.D57.CC.—3Notallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Warsandtrafficaccidentscanleavepeoplewithterriblephysicalandemotional(精神上的)hurts.Oftentheyappearagainindreams.NowAmericanresearchersthinktheyareclosetodevelopingadrug,whichwillhelppeopleforgetbadmemories.Thepillisdesignedtobetakenimmediatelyafterafrighteningexperience.Theyhopeitmightreduceorpossiblyerase(清除)theeffectofpainfulmemories.InNovember,expertstestedadrugonpeopleintheUSandFrance.Thedrugstopsthebodyproducingchemicalsthatfixmemoriesinthebrain.Sofartheresearchhassuggestedthatonlytheemotionaleffectsofmemoriesmaybereduced,notthatthememoriesareerased.Theresearchhascausedagreatdealofargument.Somethinkitisabadidea,Whileotherssupportit.Supporterssayitcouldleadtodrugsthatpreventortreatsoldiers'troublingmemoriesafterwar.Theysaythattherearemanypeoplewhosufferfromterriblememories."Somememoriescanruin(毁坏)people'slives.Theyebacktoyouwhenyoudon'twanttohavetheminadream.Theyusuallyewithverypainfulemotions,"saidRogerPitman,aprofessorofpsychiatryatHarvardButthosewhoareagainsttheresearchsaythatchangingmemoriesisverydangerousbecausememoriesgiveusouridentity(特质).Theyalsohelpusallavoidthemistakesofthepast."Allofuscanthinkofbadexperiencesinourlivesthatwereterribleatthetimebutmakeuswhoweare.I'mnotsurewewanttoerasethosememories,"saidRebeccaDresser,amedicalethicist.55.NowAmericanresearchersaretryingtodevelopadrugto___________.A.changepeople’sbadmemoriesintogoodonesB.makepeopleforgetwhathappenedinthepastC.helpsoldiersgetawayfromtroublingmemoriesD.treatpeoplewhosufferfromterriblememories56.Thedrugthathavebeentestedonpeoplecan__________.A.causethebraintolosememoriesB.reducetheeffectofbadmemoriesC.helppeopleimprovetheirmemoriesD.totallyerasethepainfulmemories57.RebeccaDresserthinksthat_____________.A.somememoriescanruinpeople'slives.B.thedruglcanpreventpeoplefromsufferingsC.badmemoriesmakeusdifferentfromothersD.takingthedrugwilldoharmtopeople'shealth55.D56.B57.CC—4Haveyoueverreceivedagiftthatwassoclearlynotyourtastethatyouwonderedifperhapsithadbeenhandedtoyoubymistake?Worse,haveyouevergivenapresentandwatchedyourfriendlookasthoughshehadopenedthewrongbox?Maybesheresponded(回应)withapolite“Why,thankyou,”butyouknewyouhadmissedthemark．Whydopresentssometimesdowrong?Andwhatdoyourchoices(goodandbad)tellaboutyourpersonalqualities（品质）?Choosingtherightgiftisanart,Ibelieve．Itcallsforempathy—theabilitytoputyourselfintosomeoneelse’sheadandheart．We’reallabletodothis;infact,we’rebornwithakindofnaturalempathy．Aftertheearliestperiodofchildhood,however,itneedstobereinforced(加强)byourparents,teachers,friends．Whenitisn’t,we’renotabletounderstandotherpeople’sfeelingsassharply．Thiscanshowinthegiftsweselect,andsocanmanyotheremotionalqualities.Thinkbacktothepresentsyou’vegivenoverthepastyear,thetimeandeffortyouputintoyourselection,howmuchyouspentyourthoughtswhileyouwereshopping,andyourfeelingswhenthereceiveropenedthepackage．Keepinmindthatwhatyouchooseshowsyourinnerworld．Ofcourse,youmayexpressyourselfdifferentlywithdifferentfriends,relatives,andotherpeopleyouknow.Weliveinasocietywhereexchangingpresentsisanimportantpartofmunication．Payingnoattentiontothetraditionwon’tmakeitgoaway．Ifyoureallydislikesuchatradition,tellyourfriendsaheadoftime.55．Theunderlinedexpression“youhadmissedthemark”means“youhadfailedto”.A.makeherfeelbetterB.keepyourfriendshipC.receiveapresentinreturnD.gettheexpectedeffect56．Inthethirdparagraph,thewritertellsusthat.A.attentionshouldbepaidtothereceivers’responsesB.onelearnsfromwhathedidinthepastC.thechoiceofgiftsshowsone’semotionalqualitiesD.oneshouldspendmoretimechoosinggifts57．Thebestpossibletitleforthispassageis“”.A.WaysofChoosingGiftsB.AnImportantTraditionC.ExchangingPresentsD.MessageinaGift55.D56.C57.DC—5Ihavebeeveryinterestedintheimportanceofmemoryinourlives.Mostpeopleknowthatthebraincontrolshowthebodyworks.Thebrainalsocontrolswhatthemindthinks,howwefeel,howweworkoninformation,andhowweunderstandthings.Iaminterestedinhowpeopleremember,whattheyremember,andhowtheyuseandimprovetheirmemories.Memoryplaysanimportantroleinlearningandthinking.Peoplehavedifferentabilitiestoremember.Stress,fatigue,emotionalproblems,andillnesscandecreasetheabilitytoremember.Generalgoodhealthcontributestogoodmemory.Practicealsoimprovesmemory.Peoplegatherandrememberinformationindifferentways.Somepeopleremembercolorsorsmellsorsounds.Otherpeoplefinditeasiertorememberspokenwords.Whilestillothersrememberprintedwordseasily.Wehavetwokindsofmemory—long-termmemoryandshort-termmemory.Long-termmemoryistheabilitytoremembereventsfromthedistantpast.Long-termmemoryisoftenthestrongestandlaststhroughoutaperson’slife.Onekindoflong-termmemoryiscalled“screenmemory.”Thismeansthatmanyexperienceswegetareputtogetherinthemindasonememory.Short-termmemoryistheabilitytoremembereventsintherecentpast,forexample,thenameofsomeoneyoumetatapartylastnight.Short-termmemoryisoftenchallengedbystress,illness,andaging.Manyofushave,orhavehad,grandparentswho’reabletoremembereventsfromtheirchildhood,butareunabletorememberwhathappenedyesterday.Mostpeoplecanonlyremembersevenitemsinorder.Thisiswhytelephonenumbers,forexample,aresevendigits(digits:0-9)long.Notallmemoriesarecorrect,buttheyalltellussomethingaboutthepersonwhoisdoingtheremembering.Thememorymaytelluswhattherememberinglikesordislikes,whatheorshewishes,anditmayalsotellusabouthisorherfears.Thestudyofmemorymayalsoprovideinformationaboutthehealthorillnessofaperson.Thisisaveryexcitingfrontierinbiologicalscience.Thereisstillalotforustolearn.()1.Whatdoestheunderlinedword“decrease”mean?A.improveB.destroyC.godowntoalowerlevelD.makemoreeffort()2.Whyaretheoldunabletorememberwhat’shappenedrecently?A.Becausetheydon’twantto.B.Becausetheeventsarenotinthepast.C.Becausetheoldageaffectsshort-termmemory.D.Becauseshort-termmemorylastsafewdays.()3．Whatcanyouinferfromthefourthparagraph?A.Ninedigitsareusedfortelephonenumbers.B.Peoplecanremembermorethansevenitemsinorder.C.Telephonenumberswillstillkeepsevendigitslong.D.Stressaffectsshort-termmemorylessthanillness.()4.What’sthemainideaofthelastparagraph?A.Weshouldgoonstudyingmemoryinthefuture.B.Somememoriescanprovideusmoreinformation.C.Memoriescantellussomethingaboutwhatoneremembers.D.Wecanknowsomethingelseaboutthepersonbyhismemory.1.C2.C3.C4.BC—6AreYouRightHandedorLeftHanded?Whichhanddoyouusewhenyouwrite?About8to15percentofpeoplearelefthanded.Theyoftenhavetousetoolsthataredesignedforright-handedpeople.Soitisdifficultforleft-handerstousemosttools.Ifyouarerighthanded,trythisexperiment:Takeaknifewithyourlefthandandtrycuttingapotatointopieces.Don’tbesurprisedifyoufeelawkward(别扭的).Inthepast,peoplethoughtitwasstrangetousethelefthand.Youngstudentslookeddownupontheirleft-handedclassmates.Somechildrenwereevenpunishedforusingtheirlefthandtowrite.Butthesedaysparentsandteachershaveacceptedthat.Inalmosteveryschoolintheworld,left-handedstudentscanusetheirlefthandtowrite.Whatcausespeopletobelefthandedorrighthanded?Expertshavesearchedlongandhardonthis.Theyconcluded(得出结论)thatleft-handedpeoplearelefthandedforthesamereasonthatright-handedpeoplearerighthanded.Oneoutofeverytenpeoplejustisaleft-hander.It’ssimplylikethecolorofoureyessomepeoplehavebrowneyes,whilesomeothershaveblackeyes.However,manyresearchersthinkthatleft-handersandright-handersaredifferentinsomeaspects.Right-handersaremoretalkativeandoutgoingthanleft-handers.Manyright-handedpeopleunderstandspokenwordsbetter.Forexample,aftertheylistentodirectionstoasupermarket,theycanfinditeasily.Right-handersaregoodatorganizingpeople,too.Theyarealsobetterbasketballguards.JustaskYaoMing.Researchshowsthatleft-handersarecreativeandartistic.Manyfamousperformers,likeJimCarreyandPaulMcCartney,arelefthanded.Manyleft-handerslearnbettervisually(在视觉方面).Inart,bothLeonardodaVinciandMichelangelowerelefthanded.Inmusic,LudwigvanBeethovenwaslefthanded.Inscience,youfindNewtonandEinstein.Theleft-handedpeoplearealsoreallygoodattennisandothersinglesports.Ifyoupreferonehand,butyouarestillgoodatwritingwiththeother,youaremixedhanded.Researchshowsmixed-handerscanremembereverydaythingsbetterthanotherpeople.Whatdidyoueatforlunchtwoweeksago?Ifyou’remixedhanded,youcanprobablyremember.49．Ifright-handerscutuppotatoeswiththeirlefthand,theywill______.A． gethurt B．giveupcuttingC．feelawkward D．changetheirtools50．WhatisParagraph2mainlyabout?A．Causesofbeinglefthanded.B．Encouragementtoleft-handers.C．Punishmentforusingthelefthand.D．Changesinopinionsonleft-handers.51．Accordingtothepassage,right-handers______.A．learnbettervisuallyB．aregoodorganizersC．arebetteratsinglesportsD．givecleardirectionstoothers52．Fromthepassage,wecanlearnthatleft-handers______.A．maybemoretalkativeandoutgoingB．areordinarypeoplelikeright-handersC．mightremembereverydaythingsbetterD．nolongerneedtouseright-handedtools49.C 50.D 51.B 52.BC-7Teacherssaythatthedigital（数字）agehashadagoodinfluenceandanot-so-goodinfluenceonAmericanteenagers.Morethan2,000middleandhighschoolteacherstookanonlinesurvey.Researchersalsospokewithteachersinsomegroups.MostteachersthinktheInternetanddigitalsearchtoolshavehadamostlypositiveinfluenceontheirstudents’researchhabitsandskills.Butatthesametime,someteachersalsopointoutsomeproblemsinteenagers’usingdigitalsearchtools.ThePewInternetProjectdidthesurveywiththeCollegeBoardandtheNationalWritingProject.JudyBuchananisthedirectoroftheNationalWritingProjectandaco-writerofthereport.Shesaysdigitalresearchtoolsarehelpingstudentslearnmore,andlearnfaster.“Bothteachersandstudentsreallywelethesetoolsbecausetheymakelearningexciting.Andthegoalistoreallyhelpstudentsbeecreatorsofsomethingmeaningful,andnotjustusersoftheonlineinformation.”Butoneproblemthesurveyfoundisthatthesetechnologiesmaketeenagershaveshortattentionspans（持续时间）.AsthereishugeamountofinformationaboutdifferentsubjectsontheInternet,teenagers’attentioniseasilydrawnawayfromtheirresearch.AnotherproblemthesurveyfoundisthatmanystudentstrusttheinformationtheyfindontheInternettoomuch.JudyBuchanansaysthesestudentshavenotdevelopedtheskillstojudgetheonlineinformation.Theyneedtolearnalottotelliftheinformationisbelievable.It’ssomethingthatreallyhastobepaidattentionto.Onemoreproblemthesurveyfoundissomethingthatmightnotseemlikeaproblematall:beingabletoquicklyfindinformationonline.Manystudentsthink“doingresearch”nowmeansjustdoingaquicksearchonGoogle.Teacherssaytheresultisadropinthewishandabilityoftheirstudentstoworkhardtofindanswers.Thatis,theyareoverlydependentonsearchenginesanddonotmakeenoughuseofprintedbooksorresearchlibrarians.ManyteachersalsosaythattheInternetmakesiteasyforstudentstocopyworkdonebyothersinsteadofusingtheirownabilities.53.Theresultofthesurveyshows______.A.digitalsearchtoolsneedtobegreatlyimprovedB.digitalsearchtoolsaregenerallygoodforteenagersC.teenagershavedifficultyinusingdigitalsearchtoolsD.Americanteachersenjoyusingdigitalsearchtools54.Usingdigitalsearchtoolsmakesteenagers______.A.lesstrustingofonlineinformationB.moreindependentindoingresearchC.morewillingtoworkhardtofindanswersD.lessabletopayfullattentionwhilesearching55.Todobetterinresearch,teenagersshould_______.A.spendmoretimesearchingonlineB.asktheirteachersformoreadviceC.makebetteruseofprintedmaterialsD.learnmoreknowledgeofsearchtools53.B54.D55.C

C-8There’salotoffocusontransfats(反式脂肪)thesedays.Wereadaboutitinthenews,andthere’stalkofpassinglawsagainsttransfats.Wearebombardedwiththeword.Unfortunately,mostpeopledon’tknowthattransfatstrulyareandwhytheyaresobadforus.Alotoffoodproductionpanieswanttogetyourdollarsbyprinting“TransFatFree”ontheirlabel(标签).Sadly,theymaynotbetellingthetruth.

Sowhatisatransfatsreally?Atransfatisaliquid(液体)fatthatisturnedintosolid.Althoughthereisaverysmallamountofnaturaltransfatsinmealanddairyproducts,mostofthemarecreatedbyaddinghydrogentolightfat.Food-makersdothisbecauseitmakestheproductslastlongerontheshelf.Haveyoueverwonderedwhycookiescanstillbecrispyand“tasty”aftersixmonthstoayearonastoreshelf?It’sbecauseoftransfats.Transfatsaretypicallyfoundinthingslikedonuts,Frenchfries,cookies,microwavepopcorn,andpotatochips.

Whyaretransfatsbadforyou?Transfatsraisethebadcholesterol(胆固醇)inyourbodyandlowerthegoodcholesterolthatthebodyneeds.Fattyfoodsdocauseoverweight.Transfatsbuildupinthebodyandblockbookflowtotheheart.Peoplewhosedietcontainsahighpercentageoftransfatsareatriskofheartdiseaseandstroke.

Whycanthefood-makerslabel

transfatsfreewhenitisn’t?Becauseofthewaythenutritionlabelinglawswork,theFDA(FoodandDrugAdministration)hasallowedthatifafoodhaslessthan0.5gramsperserving(一份)itcanbeclassifiedastransfatsfree.Readthelabelandyoumaydiscoverthatthepackageactuallycontains6servings,andifyoujustarethreeofthem,youmighthaveeaten1.49gramsoftransfats.

Besides,inmostfastfoodrestaurants,ingredientandnutritioninformationarenotlisted.Youmaybeshockedifyouknowwhatyouareeating.AnarticleinMen’sHealthmagazinepointedthatinKFC,hydrogenated(氢化的)oilsappeared91timesamongtheingredientsfromthemenulist.

Howdoyoureallyknowiftherearetransfatsinthefoodyouareeating?Onewaytotrulyunderstandwhatyouareeatingistoreadthelabel.Anotheristounderstandyouringredients.Anythingonthelabelthatsayshydrogenatedorpartiallyhydrogenated,evenifthepackagesays“TransFatsFree”,hastransfatsinit.Youhadbetternotbuythatproduct.Makeadifferentchoice,achoiceforyourhealth.

1.Theexpression“arebombardedwith”inParagraph1probablymeans

A.aretiredof

B.hearmuchof

C.areconnectedwith

D.knowclearlyabout

2.Whichofthefollowingistrueaccordingtothepassage?

A.Transfatscanmakefoodlastlongandkeeppeoplefit.

B.Food-makersusetransfatsbecausetheymakefooddelicious

C.Theamountoftransfatsinfoodisclearlywrittenonthelabel

D.Transfatscanbefoundinthefoodwithpackagesayingtransfatfree.

3.Whatcanbethebesttitleforthepassage?

A.DangerofEatingTransFatsFood

B.TruthsandFactsaboutTransFacts

C.BuyTransFatsFreeProductsNow!

D.Don’tEatinFastFoodRestaurant!1.B2.D3.BC-9YourNoseknowsIfIweretoaskyoutocloseyoureyesandIgaveyouapieceofappletoeat,wouldyoubeabletotellmewhatitisjustbytastingit?Ofcourse,youcould.Yourtonguehelpsyouknowwhatdifferentfoodstastelike.Doyouknowthatfoodswouldtastedifferentifyoudidnothaveanose?

WhatYouNeed

☆afriendtohelp

☆smallpiecesofanyfoodlikecarrot,orange,banana-whateveryouhave

☆smallpiecesofapples,raw(uncooked)potatoand(ifyouarebrave)onion

WhatYouDo

Thereareactuallythreedifferentexperiments.Youandyourfriend

shouldtaketurnstryingthemoneachother.

Experiment1:

Haveyourfriendclosehereyesandopenhermouth.Giveherapieceofthefoodandaskhertotasteit.Then,askherwhatshethinksitis.Shewillprobablyguesscorrectly.

Experiment2:

Whileyourfriendhashereyesclosed,giveherapieceofrawpotato.Atthesametime,holdapieceofapplerightunderhernose.Askhertoeatthepotatoandtellyouwhatshethinksitis.Shewillsayitisapieceofapple!Youcanevendoittheotherwayaround,andshewillthinksheiseatingapotato,or,perhaps,shewon’tbeabletonamewhatsheiseating.

Experiment3:(forthebrave)

Takeapieceofrawonion.Youdon’thavetocloseyoureyesthistime.Pressyournoseclosedwithyourotherhandsothatnosmellscangetintoyournose.Noweatasmallpieceoftheonion.Surprise!Aslongasyouholdyournose,youwillnotbeabletotastetheonion.

TheScienceSecret

Youalreadyknowthesciencesecret.Yournoseandyourtongueworktogethertomakefoodtastethewayitdoes.Yourtongue,however,cantasteonlycertainflavorslikesalty,bitter,sour,andsweet.Alloftheother“tastes”areactually“smells”,andyouneedyournosetotastethem.

Oh,youmightusethissciencesecretthenexttimeyouareforcedtoeatsomethingyoudon’tlikethetasteof.Ifyouholdyournosewhileyoueatit,youwon’t“taste”it

atall.

53.InExperiment1,youshould________beforegivingyourfriendapieceoffood.

A.askhertotastethefoodB.haveherclosehereyes

C.seeifherguessiscorrectD.askhertonamethefood

54.WhyisExperiment3forthebrave?Because________.

A.youhavetopressyournoseB.youhavetoeatarawonion

C.youdotheexperimentaloneD.youmustkeepyoureyesopen

55.What’sthepassagemainlyabout?

A.Whydifferentfoodscansmellthesame.

B.Whysomethingssmellbetterthanothers.

C.Howsmellchangesthewayweseethings.

D.Howsmellaffectsthewayfoodtastes.

56.Whatcanwelearnfromthepassage?

A.Knowledgeesfrompersonalexperience.

B.Teamworkhelpsustofindoutsciencesecrets.

C.Weshouldhavecouragewhiledoingexperiments.

D.Wecan’tdrawaconclusionsimplyfromthefeeling.CADBC-10Doesitseemlikeeveryoneyouknowis,toobusy,ortired?Doyoufeellikeyouneverhavetimetojustrelax?Doyoudaydreamaboutbeingonvacation?Well,youarenotalone.Mostpeoplehavetoomuchtodo,andtoolittletime.Itisnotsurprisingthatstress(压力)isamonpart