ACaliforniateenhasattractedtheattentionoftechgiantsGoogleforherpotentiallyrevolutionaryinventionwhichchargesaphonein20secondsflat.Thesuper-fastchargingdevicehasbeencalledasupercapacitor(超级电容器)by18-year

　　ACaliforniateenhasattractedtheattentionoftechgiantsGoogleforherpotentiallyrevolutionaryinventionwhichchargesaphonein20secondsflat.

　　Thesuper-fastchargingdevicehasbeencalledasupercapacitor(超级电容器)by18-year-oldEshaKhareofSaratoga—asshetook$50000fromtheIntelInternationalScienceandEngineeringFairwhichtookplaceinPhoenix.

　　Thedevicewillmakewaitinghoursforaphonetochargeathingofthepastandtheinventionpacksenergyintoasmallerspacethantraditionalphonebatteriesandholdsthechargeforlonger.

　　Thesupercapacitorisflexibleandtinyandisabletohandle10000rechargeeyelesmorethannormalbatteriesbyafactorof10.SofarKharehasonlyusedhersupereapacitortopoweranLED—butsheseesabrightfuturethatonedaywillseeherinventionpoweringcellphonescarsandanydevicethatrequiresarechargeablebattery.

　　HeadingtoHarvardKharetoldCBSSanFranciscothatthisisonlythestartandthatshewillbe“settingtheworldonfire”fromhere.“Mycellphonebatteryalwaysdies”shetoldNBCNewswhenaskedwhatinspiredhertoworkontheenergy-storagetechnology.Specializinginnanochemistry(纳米化学)allowedKharetoreducethesizeofherinvention.

　　EshaKharelonutBudisteanuandHenryWangjuneLingotthetopthreeprizesatthisyear’sIntclInernationalScienceandEngineeningFairinPhoenix.Khareexplainedheraward-winningrevolutionaryinvention.“Itisalsoflexiblesoitcanbeusedinrollup(卷曲)displaysandclothingandfabric”sheadded.“Ithasdifferentapplicationsandadvantagesoverbatteriesinthatsense.”

　　An18-year-oldgirlhasmanagedtofigureoutsomethingthatmulti-nationalcorporationshavenot.Thishasledto.

　　5.ThereasonthatthedeviceattractedtheattentionofGoogleisthatit______.

　　A.canbebent B.canpowercars

　　C.canchargeaphonein20seconds D.canhandle1000rechargecycles

　　6.WhatinspiredEshaKharetoinventthedevice?

　　A.Themarketdemands B.Cashprizeof$50000

　　C.Heavyweightofhercellphone B.Frequentdeathofhercellphonebattery

　　7.Theunderlinedphrase“settingtheworldonfire”inParagraph5means_______

　　A.meetingwithmanyd