2019_2020学年高中英语课时分层作业4（含解析）北师大版选修7

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1、课时分层作业(四)[语言知识练习固基础]单句语法填空1．Hecouldn'tmakehimselfheard(hear)abovethenoiseofthetraffic.2．Thisstreetisfourtimesthelength(long)ofthatone.3．Ifso，yourpointsofviewareboundtoconflictwithhis.4．Heassistedindesigning(design)thenewbridge.5．Thiskindofnewwoollensweaterwears(wear)well.6．

2、Idonotusethecomputerforstudentassessment(assess)．7．Itisevidentthatheisnotequaltothejob.8．Hewasamongthefewwhomanagedtolivethroughtheenemyprisoncamp.9．Hewasfoundoutbeforehecouldcarryouthisplan.10．Besidesforfun，hikingisagoodwaytoexercise.[高考题型练习提能力]Ⅰ.阅读理解Amazon，theworld'slarge

3、stonlineretailer(零售商)，istestingunmanneddrones(无人机)todelivergoodstocustomers，accordingtoChiefExecutiveJeffBezos.Thedrones，calledOctocopters,coulddeliverpackagesweighingupto2.3kgtocustomerswithin30minutesaftertheyplacedtheorder,hesaid.However，headdedthatitcouldtakeuptofiveyea

4、rsfortheservicetostart.TheUSFederalAviationAdministration(FAA)isyettoapprovetheuseofunmanneddronesforcivilianpurposes(民用)．“Iknowthislookslikesciencefiction,butit'snot，”MrBezostoldCBStelevision's60Minutesprogramme.“Wecandohalfhourdelivery...andwecancarryobjects，wethink，uptof

5、ivepounds(2.3kg)，whichcovers86%oftheitemsthatwedeliver.”ReadytoenterTheservicewillbecalledPrimeAirandcomesasAmazonislookingtoimproveitsefficiencytoboost(提高)growth.Amazonalsopostedavideoonitswebsiteshowingadronepickingupapackagefromoneofitswarehouses(仓库)anddeliveringittothed

6、oorstepofacustomer'shouse.However，itstillhastowaitforpermissionfromUSregulators.TheUSFederalAviationAdministrationhasapprovedtheuseofdronesforpoliceandgovernmentagencies,issuingabout1，400permitsoverthepastseveralyears.Civilianairspaceisexpectedtobeopeneduptoallkindsofdrones

7、intheUSby2015andinEuropeby2016.Amazonsaid，“Fromatechnologypointofview，we'llbereadytoentercommercialoperationsassoonasthenecessaryregulations(规定)areinplace.”TheFAAwas“activelyworkingonrulesforunmannedaerialvehicles”，thecompanysaid,addingthatithopedthegreenlightwouldbegivenas

8、earlyas2015.“Oneday,PrimeAirvehicleswillbeasnormalasseeingmailtrucksontheroadtoday