届高考英语二轮专题复习学案专题三 阅读理解之科技类Word格式文档下载.docx

届高考英语二轮专题复习学案专题三 阅读理解之科技类Word格式文档下载.docx

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D）

Batteriescanpoweranythingfromsmallsensorstolargesystems.Whilescientistsarefindingwaystomakethemsmallerbutevenmorepowerful,problemscanarisewhenthesebatteriesaremuchlargerandheavierthanthedevicesthemselves.UniversityofMissouri（MU）researchersaredevelopinganuclearenergysourcethatissmaller,lighterandmoreefficient.

“Toprovideenoughpower,weneedcertainmethodswithhighenergydensity（密度）”，saidJaeKwon,assistantprofessorofelectricalandcomputerengineeringatMU.“Theradioisotope（放射性同位素）batterycanprovidepowerdensitythatismuchhigherthanchemicalbatteries.”

Kwonandhisresearchteamhavebeenworkingonbuildingasmallnuclearbattery,presentlythesizeandthicknessofapenny,intendedtopowervariousmicro/nanoelectromechanrealsystems（M/NEMS）.Althoughnuclearbatteriescancauseconcerns,Kwonsaidtheyaresafe.

“Peopleheartheword‘nuclear’andthinkofsomethingverydangerous,”hesaid,“However,nuclearpowersourceshavealreadybeensafelypoweringavarietyofdevices,suchaspace-makers,spacesatellitesandunderwatersystems.”

Hisnewideaisnotonlyinthebattery’ssize,butalsoinitssemiconductor（半导体）.Kwon’sbatteryusesaliquidsemiconductorratherthanasolidsemiconductor.

“Thekeypartofusingaradioactivebatteryisthatwhenyouharvesttheenergy,partoftheradiationenergycandamagethelatticestructure（晶体结构）ofthesolidsemiconductor,”Kwonsaid,“Byusingaliquidsemiconductor,webelievewecanminimizethatproblem.”

TogetherwithJ.DavidRobertson,chemistryprofessorandassociatedirectoroftheMUResearchReactor,Kwonisworkingtobuildandtestthebattery.Inthefuture,theyhopetoincreasethebattery’spower,shrinkitssizeandtrywithvariousothermaterials.Kwonsaidthatbatterycouldbethinnerthanthethicknessofhumanhair.

【文章大意】本篇为科普短文，介绍由美国密苏里大学研究者所开发的核能电池的情况。

71.WhichofthefollowingistrueofJaeKwon?

A.HeteacheschemistryatMU. 

B.Hedevelopedachemicalbattery.

C.Heisworkingonanuclearenergysource.

D.Hemadeabreakthroughincomputerengineering.

72.JaeKwongaveexamplesinParagraph4_________.

A.toshowchemicalbatteriesarewidelyapplied.B.tointroducenuclearbatteriescanbesafelyused.

C.todescribeanuclear-poweredsystem.D.tointroducevariousenergysources.

73.Liquidsemiconductorisusedto_________.

A.getridoftheradioactivewaste 

B.testthepowerofnuclearbatteries.

C.decreasethesizeofnuclearbatteriesD.reducethedamagetolatticestructure.

74.AccordingtoJaeKwon,hisnuclearbattery_______.

A.usesasolidsemiconductor 

B.willsoonreplacethepresentones.

C.couldbeextremelythin 

D.haspassedthefinaltest.

75.Thetextismostprobablya________.

A.sciencenewsreport 

B.bookreview 

C.newspaperad 

D.sciencefictionstory

【答案解析】

71.【解析】选C。

细节理解题。

根据第一段的UniversityofMissouri（MU）researchersaredevelopinganuclearenergysourcethatissmaller,lighterandmoreefficient及第三段的叙述可知，Kwon在研究一种核能电池，所以C项正确。

72.【解析】选B。

根据文章第四段可知Kwon举例的目的是为了说明核能电池是安全性。

73.【解析】选D。

细节理解题。

根据partoftheradiationenergycandamagethelatticestructure（晶体结构）ofthesolidsemiconductor,”及“Byusingaliquidsemiconductor,webelievewecanminimizethatproblem.”可知，通过使用液态半导体材料，可减少对晶体结构的破坏。

74.【解析】选C。

根据Kwonsaidthatbatterycouldbethinnerthanthethicknessofhumanhair可知C项正确。

75.【解析】选A。

推理判断题。

本文讲述了Kwon的原子能电池的有关情况，文章体裁应属于科普文章，所以A项正确。

【跟踪演练】

1、（2011·

安徽省巢湖市高三第一次教学质量检测）

ScientistshavefoundthathumaneyesaremorelikelytobedamagedbyUVrays（紫外线）whileskiinginthesnow-coveredareasthansittingonthebeach,accordingtoareportbytheUKnewspaperTheTelegraph.

TheresearchersatKanazawaMedicalUniversity,JapanandAmericancompanyJohnson

Johnsonconductedthestudytogether.Theylookedattheeffectsoflightreflectiononnewlyfallensnowonaskitrail（aroughpath）inIshikawaDistrict,northernJapan.TheycomparedtheresultswiththelevelsofUVraysonasandbeachinsouthernJapan'

sOkinawaDistrict.

Theyfoundthatonthebeach,eyesareexposedtoadaily260kilojoules（千焦耳）ofUVasquaremetercomparedto658kilojoulesinsnow-coveredareas.

ThefindingsaresupportedbytheJapanMeteorologicalAgency.Accordingtotheagen-cy,thereflectionrateofUVlightonbeachesisoftenbetween10and25percent,comparedto80percentinthenewsnowareas.Theamountoflightincreased4percentwitha300-meterriseinheight.

MostofusknowthatUVrayscanharmtheskin.That'

swhywewearsunscreenonourskinbeforewegetoutinthesun.ButmanyofusmaynotrealizethatUVraysarealsoharmfultotheeyes.

IfyoureyesareexposedtolargeamountsofUVradiationoverashortperiodoftime,youmayexpe