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1、概要写作一1、阅读下面短文,根据其内容写一篇60词左右的内容概要。Weallhavedailyproblemswithtechnology,buthowmanyofuscanfixthem?MyaLeThai,ascientistfromtheUniversityofCalifornia,Irvinerecentlydiscoveredaprocessthatmightresultinbatteriesthatcouldlastforever.Thaisaidshewasfrustratedthatthebatteriesforherwir
2、elessdevicesdegraded.Overtime,theyfailedtochargefully.Thaididnotliketokeepherwirelesslaptopconnectedtoanelectricaloutlet.Shedecidedtodosomethingaboutthatproblem.Atfirst,sheandherteamatUCIrvinethoughtaboutinventinganewbattery.Butastheyexperimented,Thaidiscoveredsomethingtha
3、tmightpermitlithium-ion(锂离子)batteriestolastforever.Lithium-ionbatteriespowermostwirelessdevices.Overtime,thebatterieslosetheabilitytoholdacharge.Oneofthereasonswhylithium-ionbatteriesdegradeistheiruseofnanowires(纳米线)tocarryelectricity.Nanowiresareextremelythin.Theyareextre
4、melyefficientcarriersofelectricity,whichmakesthemusefulinbatteries.Buttheirthinnessalsomakesthemweak.‘‘Nanowiresbreakovertime,"shesaid.“That’swhytheylosecapacity.’’But,Thaihadatheory:Thenanowiresmightlastlongerifcoveredwithagel.Sheandtheteamtestedhertheory.“Itwasalongproce
5、ssandalotofwork,"Thaisaid.Theteamtriedmanycoveringsforthewires.Thenanowireswerecoatedwithagel,PMMA,andcycledthroughcharging200,000times.Thegelshowednoevidenceofdamage.Theresultssuggestedthatbatteriescouldlastforeverwithoutlosingchargingability.Thaisaid200,000cyclesamountto
6、aboutthreemonthsonjustonedevice.Thaihopestocontinueherresearchtoseeifanyothergelcouldworkbetter.ThaitellsVOAsheisenjoyingthepublicityaboutherdiscovery.Shesaidsheneverexpectedherresearchtogetmediacoverage.“It’skindofcool,”shesaid.“I’mreallygladpeopleareshowinginterestinmywo
7、rk—notjustintheworkitself,butalsointechnologyandenergy.”第1页共11页2、阅读下面短文,根据其内容写一篇60词左右的内容概要。Youmightthinkthatwhetheryouchooseablueshirtorayellowonetoweartoworkorcollegemakesnodifferencetoyourdayandthosearoundyou.However,anincreasingnumberofexpertsarguethatthecolorswechoosea
8、ffectourmood,ourcareerprospectsandevenourhealth.Thepowerofcolorhasbeenusedforcenturiesand
