高二英语阅读理解强化训练附解析Day 209.docx

高二英语阅读理解强化训练附解析Day 209.docx

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高二英语阅读理解强化训练附解析Day209

高二英语阅读理解强化训练附解析Day209

Passage1

　　Everyyear,hundredsofmillionsofMonarchButterflies（黑脉金斑蝶）fromCanadaandtheUnitedStatesjourneyasfaras2,500milestotheforestsofMichoacan,Mexico,aplacewhichhastheworld'slargestinsectmigration（迁移）.It'ssuchabreathtakingsight,butasalways,humangreedisthreateningtodestroyit.

　　TheMonarchButterfliesstarttoarriveinMichoacaninlateOctobertomaketheirwinterhomeinthetreeshighupinthemountainsofthenaturalreserve.Oncethere,theygathertogetherinlargemasses.Thesemassesoftenbecomesoheavythattheycausetreebranchestobendorevenbreak.Butthere'sapurposeofallthesemassing—itallowsthebutterfliestosurviveinthelownighttimetemperaturesatthesehighaltitudes.

　　TheMichoacanMonarchButterflySanctuaryismostimpressiveduringthemonthsofFebruaryandMarch,justbeforethewingedinsectsbegintheirlongjourneyhome.

　　Mexico'sButterflyForestisashelterprotectedbylaw,andoneofthecountry'smostpopularsights,butthathasn'tstoppedpeoplefromslowlybutsteadilydestroyingit.

　　IllegalwoodcuttingintheheartoftheMonarchButterflyBiosphereReservehasbeenalongstandingproblem,butcriminalsarerarelybroughttojustice.Theyareoftensetfreeafterpayingsomemoney.

　　Justlastmonth,anevengreaterthreatroseinMichoacan'sbutterflyhome.Thecounty'slargestminingcorporationgainedtherighttoreopenanoldmineintheheartofthemonarchreserve.Expertsbelievethatifthemineisreopened,itwilllikelyspelltheendofthismagicalplace.

　　Andasifallthiswasn'tbadenough,theincreasinguseofherbicides（除草剂）intheAmericancornbelthasledtothedecreaseofaplantwhichisessentialtothemonarchsdevelopmentfromeggintobutterfly.

1.WhendotheMonarchButterfliesflybacktoCanada?

________.

A.InJanuaryB.InMarch

C.InOctoberD.InDecember

2.Whatdoestheunderlinedword"it"inParagraph2referto?

________.

A.TheweatherB.Thereserve

C.ThemassingD.Theforest

3.WhatcanweknowabouttheprotectionofMonarchButterfliesinMexico?

________.

A.Itisverysatisfying

B.Itshouldbestrengthened

C.Itcostthegovernmentalot

D.Ithassavedmanybutterflies

4.Whatcanweinferfromthelasttwoparagraghs?

________.

A.MonarchButterflieshaveaworryingfuture

B.Americahasmanymineswaitingforexploration

C.MonarchButterfliesliveinthecentreofanoldmine

D.TheuseofherbicideswillletMonarchButterflieslayfewereggs

Passage2

Heisregardedashavingoneofthebrightestmindsontheplanet.Butoutstandingastrophysicist（天体物理学家）StephenHawkinghasadmittedthathedidnotlearntoreaduntilhewaseightyearsold.

InapubliclectureattheRoyalAlbertHall,ProfessorHawkingalsoadmittedthathewasnotactiveinstudyingwhileatOxfordUniversity,wherehestudiedphysics,andthatonlythediagnosisthathemightdieyoungfrommotorneuron（神经元）diseasemadehimconcentrateonhiswork.

ProfessorHawkingsaid:

“MysisterPhilippacouldreadbytheageof4butthenshewasdefinitelybrighterthanme.”Hesaidthathewasunexceptionalatschoolandwasneverfurtherthanhalfwayuphisclass.“Myclassworkwasveryuntidy,andmyhandwritingwasthedespairofmyteachers,”hesaid.“

ButmyclassmatesgavemethenicknameEinstein,sopresumablytheysawsignsofsomethingbetter.”Buthesaidthatitwaswhendoctorstoldhimthatheprobablyonlyhadafewyearstoliveattheageof21thatgalvanizedhimintofocusingonhisworkandaperiodofproductivitythatresultedinsomeofhisearlybreakthroughs.Hesaid,“Whenyouarefacedwiththepossibilityofanearlydeath,itmakesyourealizethatlifeisworthlivingandtherearelotsofthingsyouwanttodo.”

1.WhatmadeStephenHawkingdevotehimselftohiswork？

________

A.Patience.B.Knowledge.C.Disease.D.Laziness.

2.WecaninferthatStephenHawkingwas________whenhewasachildandstudiedinOxfordUniversity.

A.cleverB.lazyC.brightD.mean

3.Whatcanwelearnfromthelastparagraph？

________

A.StephenHawkingdidn'trealizehisdreamsinphysics.

B.ItwaspossibleforHawkingtofacetheearlydeath.

C.Thepurposeofthedoctor'sdiagnosiswastoencouragehimtoworkhard.

D.Hislifemightbetakenawaybylonghardwork.

4.Thepassagecanbetakenfroma（n）________.

A.novelB.picture

C.magazineD.advertisement

Passage3

　　TheloudestpublicfoodfightrightnowisaboutGMOs,orgeneticallymodifiedorganisms.Scientistsaddgenestocorn,soybeans,andotherplants,usuallytoprotectthecropsfrominsectsorherbicides（除草剂）.ProponentssaythatmakescropseasiertogrowandcheaperwhileopponentsbelievethatGMOshavebeenlinkedtodepression,allergies,infertility,andevencancer.Manyconsumersandfood-safetyinspectorsworrythatGMOscauseanunnaturalthreattoourhealthandtheenvironment.

　　AlthoughGMOshavebeeninourfoodsupplyfor20years,thecontroversyhasmovedtocenterstage.RecentdocumentariesandexpertsonTheDoctorOzShowhavefannedtheflames.About75percentofconsumerssaytheyareconcernedaboutthesafetyofgeneticallymodifiedfoods.TwostatesintheUSArecentlypassedbillsrequiringlabelingofallfoodsmadewithGMOs;manyotherstatesareconsideringmandatorylabeling.TheEuropeanUnion（EU）alreadyrequireslabeling,andseveralcountries,includingFrance,havebannedtheplantingofgeneticallymodifiedcrops.SoareGMOssafe-orshouldyouavoidthematallcosts？

Here,alookattheevidence.

　　Roughly90

ofthecorn,canola,soybeans,andsugarbeetsgrownintheUnitedStateshavebitsofDNAthatoriginallycamefromalab.Unlessyou'vebeeneatingonlyfoodslabeled100percentorganic-whichmustbeGMO-free-youprobablyhaveGMOsinyoursystemnow.

　　Inabigred-flag-raisingstudy,Frenchresearchersreportedlastyearthatratsdevelopedhugetumorsafterlivingongeneticallymodifiedcornfortwoyears."Geneticengineeringcanhaveunintendedconsequences",saysBillFreese,sciencepolicyanalystfortheCenterforFoodSafety.Artificialgenesforceplantstoproduceunnaturalproteins（蛋白质）,hesays,andnooneknowshowthosemayaffecthumanhealth.

　　ButscientistsimmediatelycriticizedtheFrenchstudy.Foronething,thetypesofratsusedinthestudywerehighlypronetocancer,soitwaspredictablethatsomewoulddeveloptumorsaftereatingGMOs,notesNinaFedoroff,aprofessorofbiologyandlifesciencesatPennStateUniversity.Sheadds,"We'veeatenthesefoodsfor20yearsandaren'twalkingaroundwithgianttumors."

　　HundredsofotherstudieshavefoundnotroublewithGMOs,saysRuthMacDonald,professoratIowaStateUniversity.Afterlookingatmorethan130researchprojects,theEUconcludedthatthere'snothingespeciallyriskyaboutthem.

　　InSeptember,theeditorsofScientificAmericandenouncedtheeffortstolabelGMOfoods,statingthatthere'snoproofthatGMOscanendangerpeople'shealth.Addinggenestocropsisn'tanymoredangerousthantraditionalbreeding（繁殖）,whichfarmershavedoneforthousandsofyears,theAmericanAssociationfortheAdvancementofSciencedeclaredin2012.Oldmethodsofmodifyingcropsmixedtensofthousandsofgeneswithunpredictableresults.Thefactthatscientistscannowinsertsinglegenesintocornorsoybeansshouldn'traiseanynewalarms,saysFedoroff.

　　Theredoesn'tappeartobeascientificreasontobanGMOfoodsfromyourcupboardtoprotectyourhealth.Butitishealthytolimityourintakeoftheprocessedfoodsthatoftencontainthem.Anddon'tassumethatGMO-freepackagedgoodisnecessarilyhealthy.Organiccookiescanstillcontaintoomuchsugarorsalt.

1.WhichofthefollowinghavemadetheargumentaboutGMOsfiercer?

________

A.Someconsumersandinspectors.

B.Somedocumentariesandexperts.

C.Somenewspapersandmagazines.

D.Somescientistsandadministrators.

2.Wecaninferfromthepassagethat________.

A.somecountrieslikeFrancehavesufferedseverelyfromGMOs

B.mostcropsgrownintheUnitedStatesaregeneticallymodified

C.EUconsumerscanbuyGMOSorGMO－freefoodsastheylike

D.GMO－freefoodscanhardlybefoundinAmericanmarketsnow

3.Theunderlinedword"denounced"inParagraph7means"________".

A.condemnedB.confirmed

C.advocatedD.assessed

4.Theauthorwritesthepassageforthepurposeof________.

A.appealingtopeopletorejectGMOfoods

B.provingGMOgoodsharmlessforhumans

C.sharingwithpeopleopinionsaboutGMOs

D.throwingdoubtontheresultsofresearches

Passage4

　　Ifyoucouldchangeyourchild'sDNAinthefuturetoprotectthemagainstdiseases,wouldyou?

ItcouldbepossiblebecauseoftechnologyknownasCRISPR-Cas,orjustCRISPR.

　　CRISPRinvolvesapieceofRNA,achemicalmessenger,designedtoworkononepartofDNA;italsousesanenzyme（酶）thatcantakeunwantedgenesoutandputnewonesin,accordingtoTheEconomist.ThereareotherwaysofeditingDNA,butCRISPRwilldoitverysimply,quickly,andexactly.TheusesofCRISPRcouldmeanthatcuresaredevelopedforeverythingfromAlzheimer'stocancertoHIV.Byallowingdoctorstoputjusttherightcancer-killinggenesintoapatient'simmunesystem,thetechnologycouldhelpgreatly.

　　InAprilscientistsinChinasaidtheyhadtriedusingCRISPRtoeditthegenomes（基因组）ofhumanembryos.Thoughtheembryoswouldneverturnintohumans,thiswasthefirsttimeanyonehadevertriedtoeditDNAfromhumanbeings.Withthisinmind,theUSNationalAcademyofSciencesplanstodiscussquestionsaboutCRISPR'sethics（伦理问题）.

　　Forexample,CRISPRdoesn'twor