2020年全國英語二級閱讀理解強化練習

2020年全國英語二級閱讀理解強化練習Passage1Overahundredyearsagoin1911,somethingstrangewasfoundintheglaciersofAntarctica.CrilffithTaylor—anAustraliangeologist,haddiscoveredabloodredstreampouringoutoftheicecascades(瀑布)ofTalorGlacier!PopularlyknownastheBloodFalls,scientistshadnotbeenabletofindthereasonbehindthebloodredliquidflowingthroughtheice—untilrecently.ThemysteryoftheBloodFallshadfinallybeensolved.Whenthesefallswerefirstdiscovered,scientistshadbelievedthattheredcolourcamefromalargeamountofredalgae(海藻)concentratedinthewater.Redalgaecontainapigment(色素)whichreflectsredlight,makingthealgaeappearred.Thistheorymadesense,untilitwaslaterfoundthatalgaedonotplayapartintheredcoloroftheflowingliquidatall.WhatreallycausesTalorGlacier’swatersappearbloodred,isthepresenceofironoxideintheliquid.ThewatersoftheBloodFallsarerichinsaltandironcontent,andwhenthiswatercomesincontactwiththeair,itturnsred—justlikerust!Thewaterinthesefallsisoftenreferredtoas“brine”byscientistsbecauseofthehighsaltcontentinthewater.Thisreasoningbehindtheredcolorsofthefallswasfoundbackin2003.However,theentiremysteryhadnotyetbeensolved.Howisitthen,thattheBloodFallsarenotfrozen?ResearchersattheUniversityofColoradoandUniversityofAlaskafoundthatinsidetheglacier,thereisanetworkofchannelsandreservoirsthatmovethewateraround.Saltwaterhasalowerfreezingtemperature.Inaddition,whenanysubstanceundergoesachangeinstate,itgivesoffheat.Therefore,thebrineactuallywarmitselfupwhileit’sfreezing!Howthisworks,isthatwhenthebrineisflowingthroughtheTalorGlacier,someofitdoesfreeze.Asaresultofchangingstatefromliquidtoice,thebrinegivesoffheat.Thisheatisenoughtokeeptherestofthebrineinliquidform,whichiswhyitflowsoutoftheglacier.Incrediblenewchemistryfactsfound,andmysterysolved!1.Accordingtothetext,theredalgaetheorywasonceconsidered.A.ridiculousB.reasonableC.impracticalD.complex2.WhydotheBloodFallslookredincolour?A.Becausethereistoomuchsaltandironinthewater.B.Becausetheliquidisrichinredalgae.C.BecausetheflowingliquidreflectsredsunlightD.BecausetheairisthinandrareinAntarctica.3.WhatisthemainreasonfortheBloodFalls’notfreezing?A.Thewatercontinuedflowingconstantly.B.Thereistoomuchsaltinthewater.C.ThebrinegivesoffheatwhilefreezingD.Temperaturesaren’thighenoughforflowingwater.4.Whatisthepassagemainlyabout?A.Thediscoveryofthebloodglacier.B.ThebirthoftheTalorGlacier.C.TheflowingredwaterinAntarctica.D.ThemysteryoftheBloodFalls.Passage2GrowingupinoneofthepoorestcommunitieswithmostcrimesinLosAngeles,US,beingraisedbyapoorly-educatedsinglemotherandattendingtheworst-qualitypublicschool,notmanypeopleexpectedmuchofme,soIchosetoexpectsomethingofmyself.Onmy12thbirthday,IboughtaposterofHarvardUniversitytohanginmyroom.BeingatHarvardbecamemydream—IsawmyselfattendingclassinSandersTheater,studyinginWidenerLibraryandeatinginAnnenbergHall.Drivenbythisdream,Ikeptstudyinghard.I’dbeginmydaybyaskingmyselfthesetwoquestions—WhatdoIwantinmylife?ArethethingsIamdoingtodaygoingtogetmeclosertothatlife?Askingmyselfthequestionsgavemethecouragetoaskover50Harvardstudentsforadviceonmyapplicationessays,itgavemetheenergytostudyjustonemorehouronmySATswhenotherswereasleep,anditgavemethedeterminationtoapplyforjustonemorescholarshipwhenalreadyrefusedmanytimes.Moreover,remindingmyselfofmygoaleachdaymadeiteasytosaynotothesamechoicesmyfriendsmade,becausetheywouldnevergetmeclosertomygoal.IfoundthatevenbeingpoorcouldnottakeawaymypowertodecidewhatIchosetodowithmylife.EverydayIcouldfeelmyselfgettingcloserandclosertomygoalasmywritinggotbetter,mySATscoreincreased,andmyscholarshipoffersstartedcomingin.OnMarch31st,2011,anemailarrivedfromHarvard.Thefirstwordwas“Congratulations!”.Tearsofjoyfilledmyeyes.Whoyouaretodayistheresultofthedecisionsyoumadeyesterday,andwhoyouwillbetomorrowwillbetheresultofthechoicesyoumaketoday.Whodoyouwanttobetomorrow?1.Whatdoesthefirstparagraphmainlytellus?A.Itdescribestheauthor’searlylivingconditions.B.Itprovesthattheauthoroncelivedanunhappylife.C.Itshowshowmanypeopletreatedtheauthorbadly.D.Itsharestheauthor’sdreamwithreaders.2.Whatistheauthor’sattitudetothehardship?A.Disappointed.B.Positive.C.Thankful.D.Sorrowful.3.Whatdidtheauthorwanttotellusmost?A.Afamousuniversity,asuccessfullife.B.Theearlieryousetyourselfagoal,thebetter.C.Whatdoesn’tkillyoumakesyoustronger.D.Yourchoicesdeterminewhoyouare.Passage1【語篇導(dǎo)讀】1911年,澳大利亞地質(zhì)學家在南極洲的冰川中發(fā)現(xiàn)了一種奇怪的東西——血瀑布。眾所周知,科學家一直無法找到血液中的紅色液體不結(jié)冰的原因。直到最近,血瀑布的秘密終于被發(fā)現(xiàn)了。水中富含鹽和鐵,當水接觸空氣時,就會像鐵銹一樣變紅,鹽分很高,導(dǎo)致它不結(jié)冰。1.Accordingtothetext,theredalgaetheorywasonceconsidered.A.ridiculousB.reasonableC.impracticalD.complex答案B解析推理判斷題。根據(jù)第三段第一句“Thistheorymadesense,untilitwaslaterfoundthatalgaedonotplayapartintheredcoloroftheflowingliquidatall.”可知,這個理論一開始被認為是合理的,但后來發(fā)現(xiàn)海藻對于流動的液體呈紅色不起作用。makesense“有道理,有意義,講的able2.WhydotheBloodFallslookredincolour?A.Becausethereistoomuchsaltandironinthewater.B.Becausetheliquidisrichinredalgae.C.BecausetheflowingliquidreflectsredsunlightD.BecausetheairisthinandrareinAntarctica.答案A解析細節(jié)理解題。根據(jù)第三段中的“ThewatersoftheBloodFallsarerichinsaltandironcontent,andwhenthiswatercomesincontactwiththeair,itturnsred—justlikerust!”可知,是因為水中富含鹽分和鐵,當水接觸空氣時,就會像鐵銹一樣變紅。3.WhatisthemainreasonfortheBloodFalls’notfreezing?A.Thewatercontinuedflowingconstantly.B.Thereistoomuchsaltinthewater.答案DC.ThebrinegivesoffheatwhilefreezingD.Temperaturesaren’thighenoughforflowingwater.答案C解析細節(jié)理解題。根據(jù)第五段中的“Asaresultofchangingstatefromliquidtoice,thebrinegivesoffheat.Thisheatisenoughtokeeptherestofthebrineinliquidform,whichiswhyitflowsoutoftheglacier.”可知,當液態(tài)到冰態(tài)變化時,水放出熱量。這種熱量足以使其余的鹽水保持液態(tài),這就是不結(jié)冰的原因。4.Whatisthepassagemainlyabout?A.Thediscoveryofthebloodglacier.B.ThebirthoftheTalorGlacier.C.TheflowingredwaterinAntarctica.D.ThemysteryoftheBloodFalls.解析主旨大意題。通讀全文可知,1911年澳大利亞地質(zhì)學家在南極洲的冰川中發(fā)現(xiàn)了血瀑布。眾所周知,科學家一直無法找到血液中的紅色液體不結(jié)冰的原因。直到最近,血瀑布的秘密終于被發(fā)現(xiàn)了。分析選項可知,D項“血瀑布【長難句分析】ThewatersoftheBloodFallsarerichinsaltandironcontent,andwhenthiswatercomesincontactwiththeair,itturnsred—justlikerust!血瀑布中的水里含有豐富的鹽和鐵,當這種水與空氣接觸時,就會變成紅色——就像生銹一樣!本句總體上是一個由and連接的并列句,在第二個分句中有一個when引導(dǎo)的時間狀語從句。Passage2【語篇導(dǎo)讀】作者雖早年生活于一個很差的環(huán)境中,但在12歲時有了一個哈佛夢。從此在這個夢的驅(qū)使下,作者一直不斷地努力學習,最終達到了自己的目標。作者要告訴我們的是即使貧窮也無法剝奪我們決定為自己選擇人生的權(quán)力——你的選擇決定了你是誰。1.Whatdoesthefirstparagraphmainlytellus?A.Itdescribestheauthor’searlylivingconditions.B.Itprovesthattheauthoroncelivedanunhappylife.C.