理工A答案文档格式.docx
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B.claim
C.wish
D.compete
5.Themethodsofcommunicationusedduringthewarwere（primitive）.
A.simple
B.reliable
C.effective
D.alternative
6.Respectforlifeisa（cardinal）principleofthelaw.
A.moral
B.regular
C.fundamental
D.hard
7.Thedrinkingwaterhasbecame（contaminated）withlead.
A.polluted
B.treated
C.tested
D.corrupted
8.Comeout,orI’ll（bust）thedoordown.
A.shut
B.set
C.break
D.beat
9.She（shed）afewtearsatherdaughter’swedding.
A.wiped
B.injected
C.produced
D.removed
10.Theydidn’tseemtoappreciatethe（magnitude）oftheproblem.
A.existence
B.importance
C.cause
D.situation
11.Thetowerremains（intact）everaftertwohundredyears.
A.unknown
B.unusual
C.undamaged
D.unstable
12.Manyexpertsremain（skeptical）abouthisclaims.
A.doubtful
B.untouched
C.certain
D.silent
13.Theproposalwas（endorsed）themajorityofmembers.
A.rejected
B.submitted
C.considered
D.approved
14.Rumorsbeganto（circulate）abouthisfinancialproblems.
A.send
B.spread
C.hear
D.confirm
15.Thepolicewillneedtokeepa（wary）eyeonthisareaoftown.
A.naked
B.cautious
C.blind
D.private
答案：
1-5：
ADBDA;
6-10：
CACCB;
11-15：
CADBB
第2部分：
阅读判断（第16~22题，每题1分，共7分）
下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断;
如果该句提供的是正确信息，请选择A;
如果该句提供的是错误信息，请选择B;
如果该句的信息文中没有提及，请选择C。
NewUnderstandingofNaturalSilk’sMysteries
Naturalsilk,asweallknow,hasastrengththatmanmadematerialshavelongstruggledtomatch.InadiscoverythatsoundsmorelikeanancientChineseproverbthanamaterialssciencebreakthrough,MITresearchershavediscoveredthatsilkgetsitsstrengthfromitsweakness.Or,morespecifically,itsmanyweaknesses.Silkgetsitsextraordinarydurabilityandductilityfromanunusualarrangementofhydrogenbondsthatareinherentlyveryweakbutthatworktogethertocreateastrong,flexiblestructure.
Mostmaterials--especiallytheonesweengineerforstrength--gettheirtoughnessfrombrittleness.Assuch,naturalsilkslikethoseproducedbyspidershavelongfascinatedbothbiologistsandengineersbecauseoftheirlightweight,ductilityandhighstrength（poundforpound,silkisstrongerthansteelandfarlessbrittle）.Butonitsface,itdoesn'
tseemthatsilksshouldbeasstrongastheyare;
molecularly,theyareheldtogetherbyhydrogenbonds,whicharefarweakerthanthecovalentbondsfoundinothermolecules.
Togetabetterunderstandingofhowsilkmanagestoproducesuchstrengththroughsuchweakbonds,theMITteamcreatedasetofcomputermodelsthatallowedthemtoobservethewaysilkbehavesattheatomiclevel.Theyfoundthatthearrangementofthetinysilknanocrystalsissuchthatthehydrogenbondsareabletoworkcooperatively,reinforcingoneanotheragainstexternalforcesandfailingslowlywhentheydofail,soasnotsoallowasuddenfracturetospreadacrossasilkstructure.
Theresultisnaturalsilksthatcanstretchandbendwhileretainingahighdegreeofstrength.Butwhilethat'
sallwellandgoodforspiders,beesandthelike,thisunderstandingofsilkgeometrycouldleadtonewmaterialsthatarestrongerandmoreductilethanthosewecancurrentlymanufacture.Ourbestandstrongestmaterialsaregenerallyexpensiveanddifficulttoproduce（requiringhightemperaturetreatmentsorenergy-intensiveprocesses）.
Bylookingtosilkasamodel,researcherscouldpotentiallydevisenewmanufacturingmethodsthatrelyoninexpensivematerialsandweakbondstocreatelessrigid,moreforgivingmaterialsthatarenonethelessstrongerthananythingcurrentlyonoffer.Andifyouthoughtyouweregoingtogetoutofthismaterialssciencestorywithouthearingaboutcarbonnanotubes,thinkagain.TheMITteamisalreadyinthelablookingintowaysofsynthesizingsilk-likestructuresoutofmaterialsthatarestrongerthannaturalsilk--likecarbonnanotubes.Super-silksareonthehorizon.
参考译文：
我们都知道，蚕丝具有的韧性是人造织物长期奋力追求的目标。
在一项研究中（该项研究成果听起来更像一则古代中国谚语，而不是材料科学的突破），麻省理工学院的研究人员发现，蚕丝的力量源于其脆弱，或者，更具体地说，是它的多方面的脆弱。
蚕丝的异常耐久性和延展性来自一种特别的氢键结构，这些氢键本质上非常脆弱，但它们共同创造了一种强壮而富有弹性的结构。
大多数材料（特别是那些要求硬度很高的材料）的韧性来自脆性。
因此，和蜘蛛制造的蛛丝类似的蚕丝，因其重量轻，延展性强和韧性高，长期以来引起了生物学家和工程师的兴趣（同样重量，蚕丝比钢要壮，也不那么脆）。
但表面上，蚕丝看起来却不那么强壮;
从分子结构上看，它们是由氢键组成的，氢键比其他分子中发现的共价键要脆弱得多。
为了更好地了解蚕丝如何以如此脆弱的化学键产生这么强壮的力，麻省理工学院的研究小组创造了一套计算机模型，这种模型能够让他们在原子层次上观察蚕丝的活动方式。
他们发现，微小蚕丝纳米晶体的结构使氢键能够齐心协力地合作，相互增援，对抗外力，同时，当外力减弱时也随之慢慢减弱，这样就不至于在蚕丝的整体结构上出现突然的断裂。
这样，天然丝能够既伸缩和弯曲，又能够保持极高的韧力。
对于蜘蛛和蜜蜂之类的昆虫来说这也没什么，但对于蚕丝几何形状的这种了解，可能帮助人们制造出比我们面前能够制造的材料更结实而又更柔软的新材料。
最好和最结实的材料通常是很昂贵而又难以制造的（需要高温处理，或者高能耗处理）。
通过研究蚕丝作为一个例子，研究人员有可能设计出制造材料的一种新方法，即用廉价材料和弱键，制造不那么坚硬而又柔软，但比目前所用的任何材料都结实的材料。
如果你认为不研究碳纳米管的理论，就能从这一则材料学信息中获取制造方法，那请三思。
麻省理工学院研究小组已经在实验室利用比蚕丝还结实的材料（比如碳纳米管）研究合成类似蚕丝一样的结构。
超级蚕丝即将出现。
16.MITresearcherscarryoutthestudytoillustrateanancientChineseproverb.
A.RightB.WrongC.Notmentioned
17.Silk’sstrengthcomesfromitsweakhydrogenbondsworkingtogether.
18.Biologistandengineerareinterestedinunderstandingnaturalsilksbecausetheyareverylightandbrittle.
19.Ifthehydrogenbondsbreakduetoexternalforces,theybreakfast.
20.TheMITteamhadtrieddifferentmaterialsbeforetheystudiednaturalsilkintheirresearch.
21.Carbonnanotubesarecurrentlythemostpopulartopicinmaterialscience.
22.Itisindicatedthatmaterialsstrongerthannaturalsilkcanbeexpectedinthefuture.
A.RightB.WrongC.Notmentioned
第3部分：
概括大意与完成句子（第23~30题，每题1分，共8分）
下面的短文后有2项测试任务：
（1）第23~26题要求从所给的6个选项中为指定段落每段选择1个小标题;
（2）第27~30题要求从所给的6个选项中为每个句子确定一个最佳选项。
BlackHoles
23-26:
DAFB
第三部分概括大意与完成句子
23.Paragragh1_______
24.Paragragh2_______
25.Paragragh3_______
26.Paragragh4_______
A.Whatareblackholesmadeof?
B.Isthereproofthatblackholesreallyexist?
C.Howwereblackholesnamed?
D.Howareblackholesformed?
E.Whataredifferenttypesofblackholes?
F.Whathappenstotheobjectsaroundablackhole?
27-30:
EDCF
27.Blackholesareformedafter_.
28.Whenalargestarexplodes,thegravitycompactseverpieceinto_.
29.Anewlyformedblackholeandthestaritcomesfromareof_.
30.AlbertEinstein’stheoryofrelativityhelpstoprove_.
A.afractionofaninch
B.thecreationofnewentities
C.thesameamountofmass
D.thetiniestparticle
E.anexplosionofhugestars
F.theexistenceofblackholes
第四部分阅读理解
31.WhydidthewildlifeexpertsvisittheKalahariDesert?
A.tofingwherehoneybadgerslive.
B.tocatchsomehoneybadgersforfood.
C.toobservehowhoneybadgersbehave.
D.tofindoutwhyhoneybadgershaveabadreputation.
32.WhatdoesKitsoKhamasayabouthoneybadgers?
A.theyarealwayslookingforfood.
B.theydonotenjoyhumancompany.
C.theyshowinterestinthingstheyarenotfamiliarwith.
D.itiscommonforthemtoattackpeople.
33.Whatdidtheteamfingoutabouthoneybadgers?
A.thereweresomecreaturestheydidnoteat.
B.theywereafraidofpoisonouscreatures.
C.femalebadgersdidnotmixwithmalebadgers.
D.theymaygetsomeofthewatertheyneededfromfruit.
34.Whichofthefowingisatypicalfeatureofmalebadgers?
A.theydon'
trunveryquickly.
B.theydefendtheirterritoryfromotherbadgers.
C.theyhuntoveraverylargearea.
D.theyaremoreaggressivethanfemales.
35.Whathappenedwhenhoneybadgersgotusedtohumansamountthem?
A.theybecamelessaggressivetowardsothercreatures.
B.theylostinterestinpeople.
C.theystartedeatingmore.
D.otheranimalsstartedworkingwiththem.
第二篇ForecastingMethods
36.whichofthefollowingfactorsisNOTmentionedinchoosingaforecastingmethod?
A.Necesseryamountofinformation.
B.Degreeofdifficultyinvolvedinforecasting.
C.Practicalknowledgeoftheforecaster.
D.Creativityoftheforecaster.
37.Thepersistencemethodfailstoworkwellwhen
A.itisrainy.
B.itissunny.
C.weatherconditionschangegreatly.
D.weatherconditionsstaystable.
38.Thetrendsmethodworkswellwhen
A.weatherfeaturesaredefinedwellenough.
B.predictionsonprecipitationareaccurate.
C.weatherfeaturesareconstantforalongperiodoftime.
D.thespeedanddirectionofmovementarepredicable.
39.Theanalogmethodshouldnotbeusedinmakingaweatherforecastwhen
A.thecurrentweatherscenarioisdifferentfromtheanalog.
B.theanaloglookscomplicated.
C.theanalogismorethan10yearsold
D.thecurrentweatherscenarioisexactlythesameastheanalog.
40.Historicalweatherdataarenecessaryin
A.theclimatologymethodandtheanalogmethod.
B.thepersistencemethodandthetrendsmethod.
C.thetrendsmethodandtheclimatologymethod..
D.thepersistencemethodandtheanalogmethod.
第三篇
StudentsLearnBetterwithTouchscreenDesks
Observe
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