职称英语理工类押题精品Word格式文档下载.docx

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Thesecretoftheweb’sstrength?

Atypeofsuper-resilient

（2）silkcalleddragline.Whenthefemalespiderisreadyto（3）weavetheweb’sspokesandframe,sheusesherlegstodrawtheairythreadoutthroughahollownozzleinherbelly.Draglineisnotsticky,sothespidercanracebackandforthalong（4）ittospintheweb’strademarkspiral.恒星英语论坛

Unlikesomespidersthatweaveanewwebeveryday,aGoldenOrbWeaver（5）reusesherhandiworkuntilitfallsapart,sometimesnotfortwoyears.ThesilkythreadisfivetimesstrongerthansteelbyweightandabsorbstheforceofanimpactthreetimesbetterthanKevlar,ahigh-strengthhuman-made（6）materialusedinbullet-proofvests.Andthankstoitshightensilestrength,ortheabilitytoresistbreakingunderthepullingforcecalledtension,asinglestrandcanstretchupto40percentlongerthanitsoriginal（7）lengthandsnapbackaswellasnew.Nohuman-madefiberevencomes（8）close.

Itisno（9）wondermanufacturersareclamoringforspidersilk.Intheconsumerpipeline:

High-performancefabricsforathletesandstockingsthatneverrun.Thinkparachutecordsandsuspensionbridgecables.Asteady（10）supplyofspidersilkwouldbeworthbillionsofdollars–buthowtoproduceit?

Harvestingsilkonspiderfarmsdoesnot（11）workbecausetheterritorialarthropodshaveatendencytodevourtheirneighbors.

Now,scientistsatthebiotechnologycompanyNexiaarespinningartificialsilkmodeledafterGoldenOrbdragline.The（12）firststep:

extractsilk-makinggenesfromthespiders.Next,implantthegenesintogoateggcells.Thenannygoatsthatgrowfromtheeggssecretedraglinesilkproteinsintheir（13）milk.“Theyounggoatspassonthesilk-makinggenewithout（14）anyhelpfromus,”saysNexiapresidentJeffreyTurner.Nexiaisstillperfectingthespinningprocess,buttheyhopeartificialspidersilkwillsoonbesnaggingcustomers（15）asfastastherealthingsnagsbugs.

第十篇ChickenSoupfortheSoul：

ComfortFoodFightsLoneliness心灵鸡汤：

爽心食品排解孤独感

Mashedpotatoes,macaroniandcheese,maybebadforyourarteries．1butaccordingtoastudyinPsychologicalScience,they’regoodforyourheartand2emotions．Thestudyfocuseson“comfortfood”andhowitmakespeoplefeel．

"

Forme3personally,foodhasalwaysplayedabigroleinmyfamily,”saysJordanTroisi,agraduatestudentattheUniversityofBuffalo,andleadauthoronthestudy．Thestudycameoutoftheresearchprogramofhisco—authorShiraGabriel．Ithas4lookedatnon-humanthingsthatmayaffecthumanemotions．Somepeoplereducelonelinessbybondingwiththeir5favoriteTVshow,buildingvirtualrelationshipswithapopsongsingerorlookingatpicturesoflovedones．TroisiandGabrielwonderedifcomfortfoodcouldhavethesameeffect6bymakingpeoplethinkoftheirnearestanddearest.

Inoneexperiment,inordertomake7participantsfeellonely,theresearchershadthemwriteforsixminutesaboutafightwithsomeoneclosetothem．Othersweregivenanemotionallyneutralwritingassignment.Then,somepeopleineach8groupwroteabouttheexperienceofeatingacomfortfoodandotherswroteabouteatinganewfood．9Finally,theresearchershadparticipants10completequestionsabouttheirlevelsofloneliness．

Writingaboutafightwithaclosepersonmadepeoplefeellonely．Butpeoplewhoweregenerally11secureintheirrelationshipswouldfeellesslonelybywritingaboutacomfortfood．"

Wehavefoundthatcomfortfoodsareconsistentlyassociatedwiththoseclosetous．"

saysTroisi．"

Thinkingaboutorconsumingthesefoodslaterthenservesasareminderofthosecloseothers．"

In12theiressaysoncomfortfood,manypeoplewroteaboutthe13experienceofeatingfoodwithfamilyandfriends.

Inanotherexperiment,14eatingchickensoupinthelabmadepeoplethinkmoreaboutrelationships,butonlyiftheyconsideredchickensouptobeacomfortfood．Thiswasaquestiontheyhadbeenaskedlongbeforetheexperiment,alongwithmanyotherquestions,sotheywouldn’trememberit.

Throughouteveryone’sdailylivestheyexperiencestress,oftenassociatedwithour15connectionswithothers,"

Troisisays．"

ComfortfoodCanbeaneasyremedyforloneliness． 

*第十一篇ClimateChangePosesMajorRisksforUnpreparedCities气候变化给不备城市带来重大风险

Anewexaminationofurbanpolicieshasbeen 

1carriedoutrecentlybyPatriciaRomeroLankao．Sheisasociologistspecializinginclimatechangeand 

2urban 

development．Shewarnsthat 

manyoftheworld’sfast-growingurbanareas，especiallyindevelopingcountries．willlikelysuffer 

fromtheimpactsofchangingclimate．Herworkalsoconcludesthatmostcitiesarefailingto3reduceemissionsofcarbondioxideandothergreenhouse4gases 

．These 

gasesareknown 

toaffecttheatmosphere．”Climatechangeisadeeplylocalissueandposesprofoundthreatstothegrowingcitiesoftheworld,”saysRomeroLankao.”Buttoofewcitiesaredevelopingeffectivestrategiesto5protect 

theirresidents."

Citiesare 

6major 

sourcesofgreenhousegases．Andurbanpopulationsarelikelytobeamongthosemostseverelyaffectedbyfutureclimatechange.Lankao’sfindings 

highlightwaysinwhichcity-residentsareparticularlyvulnerable,andsuggestpolicyinterventionsthatcouldofferimmediateandlonger-term 

7 

benefits 

．

Thelocationsanddenseconstructionpatternsofcitiesoftenplacetheirpopulationsatgreaterriskfornaturaldisasters.Potential 

8threats 

associatedwithclimateincludestormsurgesand 

prolongedhotweather.Stormsurgescanfloodcoastalareasandprolongedhotweathercanheat 

9heavily 

pavedcitiesmorethansurroundingareas．Theimpactsofsuchnaturaleventscanbemoreseriousinanurbanenvironment．Forexample，aprolongedheatwavecanincreaseexisting 

levelsofairpollution，causing 

widespreadhealthproblems．Poorerneighborhoodsthat 

may 

10lack 

basicfacilitiessuchasdrinkingwateroradependablenetworkofroads，areespeciallyvulnerabletonaturaldisasters．Manyresidentsinpoorercountriesliveinsubstandardhousing 

11without 

accesstoreliabledrinkingwater，roadsandbasicservices. 

Localgovernments, 

12therefore,shouldtakemeasurestoprotecttheirresidents.”Unfortunately，theytendtomovetowardsrhetoric 

13ratherthan 

meaningfulresponses, 

RomeroLankaowrites,”Theydon’timposeconstructionstandardsthatcouldreduceheatingandairconditioningneeds.Theydon'

temphasizemasstransitandreduce 

14automobile 

use.Infact,manylocal 

governments 

aretaking 

ahands—off 

approach.”Thus,sheurgesthemto 

change 

their 

15idle 

policiesandtotakestrongstepstopreventtheharmfuleffectsofclimatechangeoncities.

★*第十二篇FreeStatinsWithFastFoodCouldNeutralizeHeartRisk快餐加免费降胆固醇药物可以降低罹患心脏病的风险

Fastfoodoutletscouldprovidestatindrugsfreeof 

1charge 

sothatcustomerscanreducetheheartdiseasedangersoffattyfood,researchersatImperialCollegeLondon 

2suggest 

in 

anewstudy．

Statinsreducethe 

3amount 

ofunhealthy”LDL”cholesterolintheblood.Awealthoftrial 

datahasproventhemtobehighlyeffectiveatloweringaperson’sheartattack 

4risk 

.

Inapaperpublishedinthe 

AmericanJournalofCardiology，DrDarrelFrancisandcolleaguescalculatethatthereductioninheartattackriskofferedbyastatinis 

5enough 

tooffsettheincreaseinheartattackriskfrom 

6eating 

a 

cheeseburgeranddrinkingamilkshake．

DrFrancis，fromtheNationalHeartandLungInstituteatImperialColle