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时间:2019-11-15
《2019高考英语一轮选练编题Unit2Robots含解析新人教版选修7.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit2考点规范练(选修7 Unit2)【短文语法填空】根据短文内容,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。IthasprovedtobethecaseinthelastfewdecadesthatEnglishwouldbethegloballanguage.However,learningEnglishasaforeignlanguageisverydifficultinthe1.absence(absent)ofanativelanguageenvironment.Some2.respected(respect)theoriesonlanguageacqui
2、sitionbelievethattolearnaforeignlanguage,youneedto3.be__surrounded(surround)bysomenativespeakers.Sadly,mostoftheEnglishlearnerscannotliveinthenativecountry,4.whichmeanswecanonlydependonourschoolresources.Soteachershavetoguarantee5.anadequateamountofinputinEnglish,whichcanbeconveyedtothestudentst
3、hrough6.various(vary)mediums.Sinceextracurriculaworkmayacceleratelanguagelearning,herearesome7.suggestions(suggest)toEnglishlearners:listeningtoanEnglishsongseveraltimesinoneweekafter8.reading(read)thewords.Try9.to__adjust(adjust)thelanguagetoEnglishinpartsyouknowwellwhilewatchingafavouriteDVD.S
4、tudyingwithfriends.Rewardingyourself,includinginformingafriend10.ofyourtargetssotheycanhelpmotivateyouaswell.Ⅰ.阅读理解AEachyear,hikersandmountainbikersgetlostorinjuredinthewilderness.Searchandrescueeffortscaninvolve20ormorepeople.Butanew“smart”drone(无人机)canfollowhikingtrails(小路)withoutapilot’sassis
5、tance.Thiscouldallowrescuerstosearchmoreefficiently.Scientistsoutfittedacraftwithasinglecamera.Asthedrone’s“eye”,thecamerapointedforwards.Buthavinganeyewasn’tenough.Thedronealsoneededa“brain”tounderstandwhatitwasseeing.Andthatbrainwouldhavetorecognizewhatconstitutesatrail.Cameraimages,however,ca
6、nbeverydifficultforaputertointerpret,studyleaderAlessandroGiustinotes.Soheandhisteamusedphotosofforesttrailstotraintheirdrone’sneuralnetwork(神经网络).TheyattachedthreeGoProcamerastoasingleheadband.Onecamerapointedstraightforward.Theothertwoweredirected30degreestotherightandleftofthecentre.Ahikerput
7、thepackageonandthenhitthetrailsinaforestedpartofSwitzerland.Overseveralweeks,thecamerasrecordedatotalof8hoursofvideocovering7kilometresoftrails.Theresearchersthendividedthevideointoindividualstillimagestotraintheneuralnetwor
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