高考英语阅读理解精英定时系列练习题18Word格式.docx
- 文档编号:14224168
- 上传时间:2022-10-20
- 格式:DOCX
- 页数:8
- 大小:22.34KB
高考英语阅读理解精英定时系列练习题18Word格式.docx
《高考英语阅读理解精英定时系列练习题18Word格式.docx》由会员分享,可在线阅读,更多相关《高考英语阅读理解精英定时系列练习题18Word格式.docx(8页珍藏版)》请在冰豆网上搜索。
ArecentstudyofancientandmodernelephanthascomeupwiththeunexpectedconclusionthattheAfricanelephantisdividedintotwodistinct(不同的)species
ThediscoverywasmadebyresearchersatYorkandHarvardUniversitieswhentheywereexaminingthegeneticrelationshipbetweentheancientwoollymammothandmastodontomodernelephants—theAsianelephant,Africanforestelephant,andAfricansavannaelephant.
OncetheyobtainedDNAsequences(序列)fromtwofossils(化石),mammothsandmastodons,theteamcomparedthemwithDNAfrommodernelephants.TheyfoundtotheiramazementthatmodernforestandsavannaelephantsareasdistinctfromeachotherasAsianelephantsandmammoths.
ThescientistsuseddetailedgeneticanalysistoprovethattheAfricansavannaelephantandtheAfricanforestelephanthavebeendistinctspeciesforseveralmillionyears.ThedivergenceofthetwospeciestookplacearoundthetimeofthedivergenceofAsianelephantsandwoollymammoths.Thisresultamazedallthescientists.
Therehaslongbeendebateinthescientificcommunitythatthetwomightbeseparatespecies,butthisisthemostconvincingscientificevidencesofarthattheyareindeeddifferentspecies.
Previously,manynaturalistsbelievedthatAfricansavannaelephantsandAfricanforestelephantsweretwopopulationsofthesamespecies,despitetheelephants’significantsizedifferences.Thesavannaelephanthasanaverageshoulderheightof3.5metreswhiletheforestelephanthasanaverageshoulderheightof2.5meters.Thesavannaelephantweighsbetweensixandseventons,roughlydoubletheweightoftheforestelephant.Butthefactthattheylooksodifferentdoesnotnecessarilymeantheyaredifferentspecies.HowevertheprooflayintheanalysisoftheDNA.
AlfriedRoca,assistantprofessorintheDepartmentofAnimalSciencesattheUniversityofIllinois,said,“Wenowhavetotreattheforestandsavannaelephantsastwoverydifficultunitsforconservationpurposes.Since1950,allAfricanelephantshavebeenconservedasonespecies.Nowthatweknowtheforestandsavannaelephantsaretwodistinctiveanimals,theforestelephantshouldbecomeabiggerpriority(优先)forconservationpurposes.”
66.Oneofthefossilsstudiedbytheresearchersisthatof.
A.theAsianelephantB.theforestelephant
C.thesavannaelephantD.themastodonelephant
67.Theunderlinedword“divergence”inParagraph4means“.”
A.evolutionB.exhibitionC.separationD.examination
68.Theresearchers’conclusionwasbasedonastudyoftheAfricanelephant’s.
A.DNAB.heightC.weightD.population
69.WhatareAlfredRoca’swordsmainlyabout?
A.TheconservationofAfricanelephants
B.ThepurposeofstudyingAfricanelephants
C.ThewaytodivideAfricanelephantsintotwounits
D.ThereasonforthedistinctionofAfricanelephants
70.Whichofthefollowingcanbethebesttitleforthepassage?
A.Naturalist’BeliefsaboutElephants
B.AmazingExperimentsaboutElephants
C.AnUnexpectedFindingaboutElephants
D.ALongScientificDebateaboutElephants
【参考答案】
66-70.DCAAC
阅读理解A
Recentlymorestudentsarechoosingtostudyabroadastheythinkitisworthwhile.However,somepeoplethinkitisnotagoodidea.Thereareanumberofdisadvantagesinstudyingabroad.Thefollowingparagraphswillexplainwhystudentshavetheseviewsandtheadvantagesofstudyingabroadwillbediscussed.
Studentsstudyingabroadmaysufferfromracialdiscrimination(歧视).Astheylefttheirhomecountry,theywillbecomepartofaminoritygroupinthenewcountry.Themajoritygroupmayhaveasenseofsuperiorityandtrytobullythem.ItiscommonthatAmericansortheBritishdiscriminateagainstpeoplefromothercountriessincemanyofthemthinkthatwhitepeoplearebetterthanothers.
Inaddition,thestudentsmaylosetheirowncultures.Sincetheyhavemovedtoanewplace,allthethingthere–people,lifestyleandthelivingenvironment---wouldbedifferentfromthoseintheirowncountry.Astheywillhaveclosecontactwiththelocalpeopleandculture,theywillbeinfluencedbythenewcultureevenwithoutrealizingit.ItisironicthataChinesepersonspeaksbetterEnglishthanChineseandforgetsaboutChinesecultureafterstudyingabroadforafewyears.
Ontheotherhand,studyingabroadwillwidentheviewofstudents.Althoughtheymaygiveuptheirownculture,theycanreallylearnfromothers.Asstudentsofthemodernworld,theyshouldnotlimittheirscopetotheirhomecountry,butgetexposedtotheworld.Studyingabroadcanhelpthemexpandtheirhorizonandlearnmanythingsinthehostcountry,astheywillmeetandmakefriendswithpeoplefromallovertheworld.So,studyingabroadisgoodforthem.
Furthermore,studentswilllearnhowtobematureandindependent.Students,wheninth
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 高考 英语 阅读 理解 精英 定时 系列 练习题 18