2019高考英语一轮达标unit1greatscientists练题含解析新人教版必修5

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1、GreatScientists李仕才一、阅读理解。阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。AgunmankilledtwomembersofatelevisionnewscrewintheUnitedStatesearlierthisweek.TheirTVstationbroadcasttheshooting“live”inrealtime.TheshootingshockedmanyAmericansandpeoplearoundtheworld.OneUSteenagerwantstohelppreventsuchatta

2、cks.KaiKloepferlivesinBoulder，Colorado.Hehasatalentfortechnology.Hehasbeenteachinghimselfengineeringskillssincehewasachild.Hearingofsomanygunattacks，hedecidedtousehisskillstohelppreventmassshootings.Theyoungman'sgoalwastomakeagunthatwouldnotworkinthehandsofakiller.Butheknewitwouldb

3、eimpossibleforhimtostopdangerouspeoplefrombuyingguns.Sohechangeddirection.Hedecidedtocreateagundesignedtopreventaccidentalshootings.ThegunKaiKloepferdesignedonlyworkswhenunlockedbythefingerprintoftheowner，andnotbyanyoneelse.Thegunonlyrecognizesthetouchofitsowner.Ittooktheteenagerse

4、venmonthsandover1,500hourstocreateaplasticmodelofhis“smartgun”．Heenteredhisfingerprinthandguninalocalsciencefairandwon.Hisawardincludedafinancialprize.Hereceived$50,000.Themoneyistosupportimprovementingunsafety.KaiKloepferisnow18yearsold.Hehasbeenusingthegrantmoneytoimprovethetechn

5、ology.Hesaystheweaponhedesigneddoesn'tchangethefunctionofafirearmatall.Itjustmakesitsafer.Heisnowworkingtoaddthefingerprintlocktechnologytoarealgun.Hesaysheexpectstoonedayseehis“smartgun”forsalenexttootherfirearms.Theyoungmanplanstospendthenextyearimprovinghisfingerprinthandgun.The

6、nhewillstartcollegeatoneoftheworld'stopuniversities—theMassachusettsInstituteofTechnology.1．WhydoesKaiKloepfertrytoinventthegun?A．Topreventpeoplefrombuyingguns.B．Toprotectpeople'slives.C．Tolimitfunctionsofagun.D．Toreducepowerofagun.2．TheguncreatedbyKaiKloepferiscontrolledbytheowner

7、'sfingerprintto________.A．keepitconvenienttouseB．makeitsafetocarryaroundC．protectitsownerfromharmD．avoidbeingusedbyothers3．HowistheprogressofKaiKloepfer'sguninvention?A．Itisbeingshowninafair.B．Itisunderfurtherresearch.C．Itwillsooncomeintothemarket.D．Itneedsdesigningonceagain.4．What

8、'sKaiKloepfer'swishforhisf