汇总阅读材料练手Word格式.docx
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汇总阅读材料练手Word格式.docx
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APracticalGuideforPrimaryCarePhysicians,issomewhattechnicalbutcontainsalotofusefulinformation.Youcanordertheguidefor$5bycalling1-321-464-5563.
Mostcasesofdementia,orprolongedmentalconfusionareusuallycausedbyAlzheimer’sdisease.Butyoushouldalsolookformemoryproblemscausedbytakingoneormoremedications.ThecombinationofTagametandValium,forexample,cancauseabuild-upofthetranquilizerinthebody.Sobesuretotellyourdoctoreverymedicationyouoralovedoneistaking,includingover-the-countermedicineanddietarysupplements.
Don’toverlookdepression.Socialisolationorthedeathoffriendsandfamilycanshatteranyone’smentalstatebutitisparticularlydifficulttobearwithadvancingage.Evenpatientswithclear-cutdementiaanddepressionarelessconfusedwhentheirdepressionistreated.
Don’tgiveupevenifyouoralovedoneisdiagnosedwithAlzheimer’sdisease.Althoughthereisnocureyetthereisstillalotyoucandotoensurethebestqualityoflife.Startbyhavingafrankconversationabouttreatmentoptions,andappointsomeoneasahealth-careproxytomakesurethoseplansarecarriedout.MostpatientswithearlyAlzheimer’scanstillmakegooddecisionabouttheirfuturecare.
Thereareseveralclinicaltrialscurrentlystudyingvarioustreatments.AnintriguingonewilldeterminewhethervitaminEoranAlzheimer’sdrugcalledAriceptcanpreventdementiafromdevelopinginpeoplewhoareatgreaterriskofdevelopingAlzheimer’sdiseasebecausetheyhavewhatiscalledmildcognitiveimpairment.Tolearnmoreabouttheseclinicalstudiesvisitwww.alzheimres.org/trials.
Ifyouarecaringforsomeonewithdementia,besureyoualsotakecareofyourself.YoumightwanttocheckoutthewebsiteoftheU.S.Alzheimer’sAssociationformoreinformation.Whetheryousufferdementiaorlovesomeonewhodoes,theconditionisdifficultenoughtocopewithwithouttryingtofaceitalone.
1.Whatistheauthor’spurposeofwritingthispassage?
A.TodefinewhatAlzheimer’sdiseaseis.
B.TotellpeoplehowaavoidAlzheimer’sdisease.
C.Toprovideinformationrelatedtoabookondementia.
D.Topersuadepeopletobuymedicinefordementia.
2.Thispassagemostlikelyappearsin_________.
A.atextbookondementia
B.atermpaperonAlzheimer’sdisease
C.ascientificresearchpaperondementia
D.anad.Forabookondementiainamagazine.
3.Thepassageimpliesthat____________________.
A.evendoctorscannotdecidewhenandwhereAlzheimer’sdiseaseappear.
B.itisdifficultforsomedoctorstorecognizeAlzheimer’sdiseasesometimes.
C.certainmemoryproblemswillcertainlycauseAlzheimer’sdisease.
D.forgetfulnessandmemoryaresomethingrelevanttoAlzheimer’sdisease.
4.Ifapersonwantstobuytheguidebookheshould____________________.
A.sende-mailtowww.alzheimers.org/trials
B.checkoutthewebsitewww.alz.org
C.phone1-312-464-5563
D.writealettertotheassociation
5.Whichofthefollowingisnotmentionedasoneofthefactorscausingdementia?
A.HavingAlzheimer’sdisease.
B.Takingcertainmedications.
C.Beingupsetorsociallyisolated.
D.TakingtoomuchvitaminE.
Answers:
CDDCD
Passage2
Biotechnologistshavedevelopedgeneticallymodifiedricethatisfortifiedwithbeta-carotenewhichthebodyconvertsintovitaminAandadditionaliron,andtheyareworkingonthreekindsofnutritionallyimprovedcrops.Biotechcanalsoimprovefarmingproductivityinplaceswherefoodshortagesarecausedbycropdamageattributabletopests,drought,poorsoilandcropviruses,bacteriaorfungi.Damagecausedbypestsisincredible.TheEuropeancornborer,forexample,destroys40milliontonsoftheworld'
scorncropsannually,about7%ofthetotal.Incorporatingpest-resistantgenesintoseedscanhelprestorethebalance.Intrialsofpest-resistantcottoninAfricayieldshaveincreasedsignificantly.Sofar,fearsthatgeneticallymodified,pest-resistantcropsmightkillgoodinsectsaswellasbadappearunfounded.Virusesoftencausemassivefailureinstaplecropsindevelopingcountries.TwoyearsagoAfricalostmorethanhalfitscassavacrop-akeysourceofcalories-tothemosaicvirus.Geneticallymodified,virus-resistantcropscanreducethatdamage,ascandrought-tolerantseedsinregionswherewatershortagelimittheamountoflandundercultivation.Biotechcanalsohelpsolvetheproblemofsoilthatcontainsexcessaluminum,whichcandamagerootsandcausemanystaple-cropfailures.Agenethathelpsneutralizealuminumtoxicityinricehasbeenidentified.Manyscientistsbelievebiotechcouldraiseoverallcropproductivityindevelopingcountriesasmuchas25%andhelppreventthelossofthosecropsaftertheyareharvested.
Yetforallthatpromise,biotechisfarfrombeingthewholeanswer.Indevelopingcountries,lostcropsareonlyonecauseofhunger.Povertyplaysthelargestrole.Todaymorethan1billionpeoplearoundtheglobeliveonlessthan$1aday.Makinggeneticallymodifiedcropsavailablewillnotreducehungeriffarmerscannotaffordtogrowthemorifthelocalpopulationcannotaffordtobuythefoodthosefarmersproduce.Norcanbiotechovercomethechallengeofdistributingfoodindevelopingcountries.Takenasawhole,theworldproducesenoughfoodtofeedeveryonebutmuchofitissimplyinthewrongplace.Especiallyincountrieswithundevelopedtransportinfrastructures,geographyrestrictsfoodavailabilityasdramaticallyasgeneticspromisestoimproveit.Biotechhasitsown"
distribution"
problems.Private-sectorbiotechcompaniesintherichcountriescarryoutmuchoftheleading-edgeresearchongeneticallymodifiedcrops.Theirproductsareoftentoocostlyforpoorfarmersinthedevelopingworld,andmanyofthoseproductswon'
tevenreachtheregionswheretheyaremostneeded.Biotechfirmshaveastrongfinancialincentivetotargetrichmarketsfirstinordertohelpthemrapidlyrecoupthehighcostsofproductdevelopment.Butsomeofthesecompaniesarerespondingtotheneedsofpoorcountries.ALondon-basedcompany,forexample,hasannouncedthatitwillsharewithdevelopingcountriestechnologyneededtoproducevitamin-enriched"
goldenrice"
Moreandmorebiotechresearchisbeingcarriedoutindevelopingcountries.Buttoincreasetheimpactofgeneticresearchonthefoodproductionofthosecountries,thereisaneedforbettercollaborationbetweengovernmentagencies-bothlocalandindevelopedcountries-andprivatebiotechfirms.TheISAAAforexample,issuccessfullypartneringwiththeU.S.AgencyforinternationalDevelopment,localresearchersandprivatebiotechcompaniestofindanddeliverbiotechsolutionsforfarmersindevelopingcountries.
Biotechisnotapanacea,butitdoespromisetotransformagricultureinmanydevelopingcountriesifthatpromiseisnotfulfilled.Therealloserswillbetheirpeople,whocouldsufferforyearstocome.
1.Accordingtothesecondparagraph,whatisnotthefunctionofbiotech?
A.Thegeneticallymodified,pest-resistantcropsmightkillgoodinsectsaswellasbadones.
B.ItcanhelpsolvetheproblemofsoilthatcontainsexcessAluminum.
C.Itcouldraiseoverallcropproductivityindevelopingcountries.
D.Itcanhelppreventthelossofthosecropsaftertheyareharvested.
2.Bysaying"
butmuchofitissimplyinthewrongplace”,theauthormeans
A.thefoodisproducedmainlyindevelopedcountries.
B.thefoodisproducedintheplacewhereitisnotsoneeded.
C.thefoodisproducedintheremoteareathatishardtobetransported.
D.mostofthefoodcan'
treachtheregionswheretheyaremostneeded.
3.Theproblemofbiotechisthat
A.Itcan'
tsolvealltheproblemsexistedindevelopingcountries.
B.Thegeneticallymodifiedcropsintherichcountriesareneverrespondingtotheneedspoorcountries.
C.itbringsdevastatingeffectsalongwithadvantages.
D.itcan'
tovercomethechallengeofdistributingfoodindevelopingcountries.
4.Thesynonymof"
panacea"
inthelastparagraphis
A.solesolution.B.omnipotence.
C.almighty.D.reality.
5.Thetextindicatesthat
A.biotechistheonlysolutionoflackoffood.
B.althoughbiotechisefficientinimprovingfarmingproductivity,itisstillveryhardtobeusedbythepoorfarmersinthedevelopingworld.
C.biotechismorecrucialtowealthycountriesthandevelopingcountries.
D.therisksofbiotechoutweighthebenefits.
1-5ACDBB
Passage3
AstronomershavewitnessedthebiggestbangsincetheBigBang-themomentabout15billionyearsagowhentheuniversewascreatedinamassiveexplosion.Thehugeburstofenergyfromtheedgeoftheuniverseisestimatedtobesecondonlytothemomentofcreationinitsexplosiveforce,releasingmoreenergyintwosecondsthanthesunwillgiveoutinitslifetime.Scientistshopetheexplosion-knownasagamma-rayburstbecauseitemitsenergyintheformofgammaradiation-willshedlightontheearlieststagesintheevolutionofthestarsandgalaxies.Gamma-rayburstscannotbeseenbythehumaneyebutifthey
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