雅思阅读高分技能之积累词组更有效

千里之行，始于第2页/共2页精品文档推荐雅思阅读高分技能之积累词组更有效影响雅思阅读重要的因素之一就是词组，雅思很大一部分内容都会考到词组上面,今日我给大家带来了雅思阅读高分技--积累词组更有效，盼望能关心到大家，下面我就和大家共享，来观赏一下吧。

雅思阅读高分技--积累词组更有效

雅思阅读里的词组如何预备?有同学说买本雅思词组书去背，其实不然。比如，standup，站起来，stoodup呢?Youstoodmeupyesterday，不是你昨天站我身上了，叫做你昨天放我鸽子，它跟站、起立完全不一样，这就是说为什么不让大家去背雅思词组书，由于背完了也不知道怎么去用它，词组相当于成语，靠的是积累，这也是阅读的一个重中之重。

再如，常见词put放，除了放在雅思之中，put是可以当解释、说明来用。词组putdown表放下。另一意思是可以使你绝望懊丧，但在警匪片中，putdown依据语境就可以是镇压、打倒，或者说制服、拿下。

沿用警匪片语境，takedown就是要他小命。之所以不翻译成杀死他，处决他，是由于对于词组来说，语境很重要，我们要看的是它的来源，不是光背一个词组，这也是咱们口语当中要重点留意的。

雅思阅读全部的文章都是学术性的文章，写作是学术性的写作，包括同学们出国以后的论文，也同样是学术性的。所以，记忆词组最简洁的方法就是从雅思阅读中积累，雅思阅读中消失的任何一个词组和短语，都可以运用到你们的写作当中。

所以并不是说一篇雅思阅读文章13道题做完就结束了，假如你要不认真把这篇文章玩懂，看到里头那些好玩的点，那些好用的词组，那根本不叫学习，只是做了一遍阅读题而已。

雅思索试阅读模拟试题及答案解析

Doomeddrughighlightscomplicationsofmeddlingwithcholesterol.

1.Thefailureofahigh-profilecholesteroldrughasthrownaspotlightonthecomplicatedmachinerythatregulatescholesterollevels.Butmanyresearchersremainconfidentthatdrugstoboostlevelsofgoodcholesterolarestilloneofthemostpromisingmeanstocombatspirallingheartdisease.

2.DrugcompanyPfizerannouncedon2Decemberthatitwascancellingallclinicaltrialsoftorcetrapib,adrugdesignedtoraiseheart-protectivehigh-densitylipoproteins(HDLs).Inatrialof15000patients,asafetyboardfoundthatmorepeoplediedorsufferedcardiovascularproblemsaftertakingthedrugplusacholesterol-loweringstatinthanthoseinacontrolgroupwhotookthestatinalone.

3.Thenewscameasakickintheteethtomanycardiologistsbecauseearliertestsinanimalsandpeoplesuggesteditwouldlowerratesofcardiovasculardisease.Therehavebeennoredflagstomyknowledge,saysJohnChapman,aspecialistinlipoproteinsandatherosclerosisattheNationalInstituteforHealthandMedicalResearch(INSERM)inPariswhohasalsostudiedtorcetrapib.Thiscancellationcameasacompleteshock.

4.TorcetrapibisoneofthemostadvancedofanewbreedofdrugsdesignedtoraiselevelsofHDLs,whichferrycholesteroloutofartery-cloggingplaquestotheliverforremovalfromthebody.Specifically,torcetrapibblocksaproteincalledcholesterolestertransferprotein(CETP),whichnormallytransfersthecholesterolfromhigh-densitylipoproteinstolowdensity,plaque-promotingones.Statins,incontrast,mainlyworkbyloweringthebadlow-densitylipoproteins.

Underpressure

5.Researchersarenowtryingtoworkoutwhyandhowthedrugbackfired,somethingthatwillnotbecomeclearuntiltheclinicaldetailsarereleasedbyPfizer.Onehintliesinevidencefromearliertrialsthatitslightlyraisesbloodpressureinsomepatients.Itwasthoughtthatthismildproblemwouldbeoffsetbytheheartbenefitsofthedrug.Butitispossiblethatitactuallyprovedfatalinsomepatientswhoalreadysufferedhighbloodpressure.Ifbloodpressureistheexplanation,itwouldactuallybegoodnewsfordrugdevelopersbecauseitsuggeststhattheproblemsarespecifictothiscompound.OtherprototypedrugsthatarebeingdevelopedtoblockCETPworkinaslightlydifferentwayandmightnotsufferthesamedownfall.

6.ButitisalsopossiblethatthewholeideaofblockingCETPisflawed,saysMotiKashyap,whodirectsatherosclerosisresearchattheVAMedicalCenterinLongBeach,California.WhenHDLsexcretecholesterolintheliver,theyactuallyrelyonLDLsforpartofthisprocess.SoinhibitingCETP,whichpreventsthetransferofcholesterolfromHDLtoLDL,mightactuallycauseanabnormalandirreversibleaccumulationofcholesterolinthebody.Youreblockingaphysiologicmechanismtoeliminatecholesterolandeffectivelyconstipatingthepathway,saysKashyap.

Goingup

7.Mostresearchersremainconfidentthatelevatinghighdensitylipoproteinslevelsbyonemeansoranotherisoneofthebestroutesforhelpingheartdiseasepatients.ButHDLsarecomplexandnotentirelyunderstood.Oneapproveddrug,calledniacin,isknowntobothraiseHDLandreducecardiovascularriskbutalsocausesanunpleasantsensationofheatandtingling.Researchersareexploringwhethertheycanbypassthissideeffectandwhetherniacincanlowerdiseaseriskmorethanstatinsalone.Scientistsarealsoworkingonseveralothermeanstobumpuphigh-densitylipoproteinsby,forexample,introducingsyntheticHDLs.Theonlythingweknowisdeadinthewateristorcetrapib,notthewholeideaofraisingHDL,saysMichaelMiller,directorofpreventivecardiologyattheUniversityofMarylandMedicalCenter,Baltimore.

雅思索试阅读模拟试题及答案解析

Roguetheoryofsmellgetsaboost

1.Acontroversialtheoryofhowwesmell,whichclaimsthatourfinesenseofodourdependsonquantummechanics,hasbeengiventhethumbsupbyateamofphysicists.

2.CalculationsbyresearchersatUniversityCollegeLondon(UCL)showthattheideathatwesmellodourmoleculesbysensingtheirmolecularvibrationsmakessenseintermsofthephysicsinvolved.

3.Thatsstillsomewayfromprovingthatthetheory,proposedinthemid-1990sbybiophysicistLucaTurin,iscorrect.Butitshouldmakeotherscientiststaketheideamoreseriously.

4.Thisisabigstepforward,saysTurin,whohasnowsetuphisownperfumecompanyFlexitralinVirginia.Hesaysthatsincehepublishedhistheory,ithasbeenignoredratherthancriticized.

5.Mostscientistshaveassumedthatoursenseofsmelldependsonreceptorsinthenosedetectingtheshapeofincomingmolecules,whichtriggersasignaltothebrain.Thismolecularlockandkeyprocessisthoughttoliebehindawiderangeofthebodysdetectionsystems:itishowsomepartsoftheimmunesystemrecogniseinvaders,forexample,andhowthetonguerecognizessometastes.

6.ButTurinarguedthatsmelldoesntseemtofitthispictureverywell.Moleculesthatlookalmostidenticalcansmellverydifferent—suchasalcohols,whichsmelllikespirits,andthiols,whichsmelllikerotteneggs.Andmoleculeswithverydifferentstructurescansmellsimilar.Moststrikingly,somemoleculescansmelldifferent—toanimals,ifnotnecessarilytohumans—simplybecausetheycontaindifferentisotopes(atomsthatarechemicallyidenticalbuthaveadifferentmass).

7.Turinsexplanationforthesesmellyfactsinvokestheideathatthesmellsignalinolfactoryreceptorproteinsistriggerednotbyanodourmoleculesshape,butbyitsvibrations,whichcanenourageanelectrontojumpbetweentwopartsofthereceptorinaquantum-mechanicalprocesscalledtunnelling.Thiselectronmovementcouldinitiatethesmellsignalbeingsenttothebrain.

8.Thiswouldexplainwhyisotopescansmelldifferent:theirvibrationfrequenciesarechangediftheatomsareheavier.Turinsmechanism,saysMarshallStonehamoftheUCLteam,ismorelikeswipe-cardidentificationthanakeyfittingalock.

9.Vibration-assistedelectrontunnellingcanundoubtedlyoccur—itisusedinanexperimentaltechniqueformeasuringmolecularvibrations.Thequestioniswhetherthisispossibleinthenose,saysStonehamscolleague,AndrewHorsfield.

10.StonehamsaysthatwhenhefirstheardaboutTurinsidea,whileTurinwashimselfbasedatUCL,Ididntbelieveit.But,headds,becauseitwasaninterestingidea,IthoughtIshouldproveitcouldntwork.Ididsomesimplecalculations,andonlythenbegantofeelLucacouldberight.NowStonehamandhisco-workershavedonethejobmorethoroughly,inapapersoontobepublishedinPhysicalReviewLetters.

11.TheUCLteamcalculatedtheratesofelectronhoppinginanosereceptorthathasanodorantmoleculeboundtoit.Thisratedependsonvariouspropertiesofthebiomolecularsystemthatarenotknown,buttheresearchersc