雅思閱讀題的3大技巧全總結(jié)

千里之行，始于第2頁/共2頁精品文檔推薦雅思閱讀題的3大技巧全總結(jié)做雅思閱讀的時候?qū)W會總結(jié)很重要，今日我給大家?guī)砹搜潘奸喿x題的3大技巧全總結(jié)，盼望能關(guān)心到大家，下面我就和大家共享，來觀賞一下吧。

閱讀大作戰(zhàn)雅思閱讀題的3大技巧全總結(jié)

第一，積累肯定的詞匯量。大家要正確熟悉和有效提高詞匯量。建議同學(xué)們依據(jù)考試選材的常見類別進行相應(yīng)的專題復(fù)習(xí)，并運用肯定的記單詞的技巧，單詞量是可以在短期內(nèi)有效提高的。另外，雖然許多同學(xué)的單詞量還行，但是單詞的詞形卻沒有分清晰，雖然說詞形對考試來說不是很重要，但是請大家也不要忽視這個問題，在記單詞的時候大家多留點心就把詞形的問題解決了。

其次，熟識背景學(xué)問。從語言學(xué)的角度來看，雅思閱讀其實考察的也有背景學(xué)問，建議大家多看看國家地理，探究頻道，BBC等節(jié)目，多積累一些學(xué)問，結(jié)合考試的常見題材加以學(xué)習(xí)，若能持之以恒，必有達成。

第三，熟識語法。語法就相當(dāng)于英語的經(jīng)絡(luò)，假如經(jīng)脈不通，隱蔽的病癥就會郁積的越厲害，發(fā)作之時如燎原之勢必定一發(fā)不行整理。沒有語法的詞匯就像是脫韁的野馬，散落的珍寶，無法夠成一個有力的整體，發(fā)揮不了原有的效力，盼望大家能夠活用語法，推斷清晰句子的主謂賓，認真分析句子的結(jié)構(gòu)。

雅思索試閱讀模擬練習(xí)及答案

Don’twashthosefossils!

StandardmuseumpracticecanwashawayDNA.

1.Washing，brushingandvarnishingfossils—allstandardconservationtreatmentsusedbymanyfossilhuntersandmuseumcuratorsalike—vastlyreducesthechancesofrecoveringancientDNA.

2.Instead，excavatorsshouldbehandlingatleastsomeoftheirbountywithgloves，andfreezingsamplesastheyarefound，dirtandall，concludesapaperintheProceedingsoftheNationalAcademyofSciencestoday.

3.AlthoughmanypalaeontologistsknowanecdotallythatthisisthebestwaytouptheoddsofextractinggoodDNA，Eva-MariaGeigloftheJacquesMonodInstituteinParis，F(xiàn)rance，andhercolleagueshavenowshownjusthowimportantconservationpracticescanbe.Thisinformation，theysay，needstobehammeredhomeamongthepeoplewhoareactuallyoutinthefielddiggingupbones.

4.Geiglandhercolleagueslookedat3，200-year-oldfossilbonesbelongingtoasingleindividualofanextinctcattlespecies，calledanaurochs.ThefossilsweredugupatasiteinFranceattwodifferenttimes—eitherin1947，andstoredinamuseumcollection，orin2022，andconservedinsterileconditionsat-20oC.

5.Theteam’sattemptstoextractDNAfromthe1947bonesallfailed.Thenewlyexcavatedfossils，however，allyieldedDNA.

6.Becausetheboneshadbeenburiedforthesameamountoftime，andinthesameconditions，theconservationmethodhadtobetoblamesaysGeigl.“AsmuchDNAwasdegradedinthese57yearsasinthe3，200yearsbefore，”shesays.

Washin，washout

7.Becausemanypalaeontologistsbasetheirworkontheshapeoffossilsalone，theirmethodsofconservationarenotdesignedtopreserveDNA，Geiglexplains.

8.Thebiggestproblemishowtheyarecleaned.Fossilsareoftenwashedtogetheron-siteinalargebath，whichcanallowwater—andcontaminantsintheformofcontemporaryDNA—topermeateintotheporousbones.“NotonlyistheauthenticDNAgettingwashedout，butcontaminationisgettingwashedin，”saysGeigl.

9.MostancientDNAspecialistsknowthisalready，saysHendrikPoinar，anevolutionarygeneticistatMcMasterUniversityinOntario，Canada.Butthatdoesn’tmeanthatbestpracticehasbecomewidespreadamongthosewhoactuallyfindthefossils.

10.GettingholdoffossilsthathavebeenpreservedwiththeirDNAinmindreliesoncloserelationshipsbetweenlab-basedgeneticistsandtheexcavators，sayspalaeogeneticistSvantePbooftheMaxPlanckInstituteforEvolutionaryAnthropologyinLeipzig，Germany.Andthatonlyoccursinexceptionalcases，hesays.

11.Pbo’steam，whichhasbeensequencingNeanderthalDNA，continuallyfacestheseproblems.“WhenyouwanttostudyancienthumanandNeanderthalremains，there’sabigissueofcontaminationwithcontemporaryhumanDNA，”hesays.

12.Thisdoesn’tmeanthatallmuseumspecimensarefatallyflawed，notesPbo.TheNeanderthalfossilsthatwererecentlysequencedinhisownlab，forexample，hadbeenpartofamuseumcollectiontreatedinthetraditionalway.ButPboiskeentoseesamplesoffossilsfromeverymajorfindpreservedinlinewithGeigl’srecommendations—justincase.

Warmandwet

13.Geiglherselfbelievesthat，withcooperationbetweenbenchandfieldresearchers，preservingfossilsproperlycouldopenupavenuesofdiscoverythathavelongbeenassumedclosed.

14.Muchhumanculturaldevelopmenttookplaceintemperateregions.DNAdoesnotsurvivewellinwarmenvironmentsinthefirstplace，andcanvanishwhenfossilsarewashedandtreated.Forthisreason，Geiglsays，mostancientDNAstudieshavebeendoneonpermafrostsamples，suchasthewoollymammoth，oronremainsshelteredfromtheelementsincoldcaves—includingcavebearandNeanderthalfossils.

15.Betterconservationmethods，andafocusonfreshfossils，couldboostDNAextractionfrommoredelicatespecimens，saysGeigl.Andthatcouldshedmorelightonthestoryofhumanevolution.

(640wordsnature)

Glossary

Palaeontologists古生物學(xué)家

Aurochs歐洲野牛

Neanderthal(人類學(xué))尼安德特人，舊石器時代的古人類。

Permafrost(地理)永凍層

Questions1-6

AnswerthefollowingquestionsbyusingNOMORETHANTHREEWORDSforeachanswer.

1.Howdidpeopletraditionallytreatfossils?

2.WhatsuggestionsdoGeiglandhercolleaguesgiveonwhatshouldbedonewhenfossilsarefound?

3.Whatproblemsmaybeposediffossilbonesarewashedon-site?NameONE.

4.WhatcharacteristicdofossilboneshavetomakethemsusceptibletobecontaminatedwithcontemporaryDNAwhentheyarewashed?

5.Whatcouldbebetterunderstoodwhenconservationtreatmentsareimproved?

6.Thepassagementionedseveralanimalspeciesstudiedbyresearchers.Howmanyofthemarementioned?

Questions7-11

Dothefollowingstatementsagreewiththeinformationgiveninthepassage?Pleasewrite

TRUEifthestatementagreeswiththewriter

FALSEifthestatementdoesnotagreewiththewriter

NOTGIVENifthereisnoinformationaboutthisinthepassage

7.IntheirpaperpublishedintheProceedingsoftheNationalAcademyofSciences，GeiglandhercolleagueshaveshownwhatconservationpracticesshouldbefollowedtopreserveancientDNA.

8.ThefossilbonesthatGeiglandhercolleaguesstudiedareallfromthesameaurochs.

9.Geneticistsdon’thavetoworkonsite.

10.OnlynewlyexcavatedfossilbonesusingnewconservationmethodssuggestedbyGeiglandhercolleaguescontainancientDNA.

11.Paaboisstillworriedaboutthepotentialproblemscausedbytreatmentsoffossilsintraditionalway.

Questions12-13

CompletethefollowingthestatementsbychoosingletterA-Dforeachanswer.

12.“Thisinformation”inparagraph3indicates：

[A]ItiscriticaltofollowproperpracticesinpreservingancientDNA.

[B]ThebestwayofgettinggoodDNAistohandlefossilswithgloves.

[C]Fossilhuntersshouldwearhome-madehammerswhilediggingupbones.

[D]Manypalaeontologistsknowhowoneshoulddointreatingfossils.

13.ThestudyconductedbyGeiglandhercolleaguessuggests：

[A]thefactthatancientDNAcannotberecoveredfromfossilbonesexcavatedinthepast.

[B]thecorrelationbetweentheamountofburyingtimeandthatoftherecovered

DNA.

[C]thepaceatwhichDNAdegrades.

[D]thecorrelationbetweenconservationpracticesanddegradationofDNA.

Suggestedanswersandexplanations

1.washing，brushing，varnishing見第一段。

2.handlingwithgloves/freezingsamples(anyoneofthetwo)見其次段。

3.losingauthenticDNA/beingcontaminated/contamination(anyoneofthethree)見第八段“NotonlyistheauthenticDNAgettingwashedout，butcontaminationisgettingwashedin”(答beingcontaminated或contamination比較保險)

4.theyareporousporous的意思是多孔的。見第八段“。。。whichcanallowwater—andcontaminantsintheformofcontemporaryDNA—topermeateintotheporousbones.”

5.humanevolution見第十五段。其中“shedlightonsth”的意思是使某事顯得特別清晰，使人了解某事。

6.4分別為第四段的“a