2019_2020学年高中英语课时分层作业7SectionⅠ、Ⅱ（含解析）牛津译林版必修5

《2019_2020学年高中英语课时分层作业7SectionⅠ、Ⅱ（含解析）牛津译林版必修5》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、Unit3　Scienceandnature课时分层作业(七)　SectionⅠ、Ⅱ(建议用时：35分钟)[语言知识练习固基础]单句语法填空1．Sheisthefirstone____________(understand)thatproblem.2．__________theotherhand，westudentshavetodomassesofhomeworkbothathomeandatschool.3．ManyChinesecollegegraduatesleavetheircountrytogetfurtheredu

2、cationinAmerica________theintentionofgettingbetterjobsinthefuture.4．AlotofstudentswastetheirsparetimesurfingtheNet；________aconsequence，theyoftenfailtofinishtheirhomeworkontime.5．TurnofftheTV，soyoucanconcentrate________yourhomework.6．Nowadays，somehotnetworklanguages

3、__________(adopt)insomeofficialmedia，suchasCCTVandPeople'sDaily.7．Ifhe___________(improve)hisITskills，he'deasilygetajob.8．Thechildrenwereanxiousfortheirmother________(come)assoonaspossible.9．________(exact)speaking，youaretoblamefortheaccident.10．Nomatterwhathappens，

4、wemustpushahead________ourplan.[高考题型练习提能力]Ⅰ.阅读理解Plantcloninghasbeenanagriculturaltechniqueusedbyfarmersandgardenersforcenturies.Grafting(嫁接)isacommonformofplantcloning.Manyplantsinnatureactuallyclonethemselvesandreproduceasexually.Clonedplantsaremuchmorepredictablet

5、hannormalplants，sotheiryield(产量)ismorereliable.Clonedplantsalsoreproducefaster，limitingtheamountoftimebetweenplantingandharvesting.Itisalsooftencheapertoproduceseedsthroughcloningthanthroughtraditionalmethods.Plantscanessentiallybeoptimizedsothatfarmersorindividualg

6、rowersalwayshavethebestseedsavailable.Withmoreyieldatafasterrate，farmscanproducemorefoodformorepeoplewhiledecreasingoverallcosts.Cloningcanbeusedtowipeoutdiseasesthatpreviouslykilledoffentirefieldsofcrops.Thiswouldmakeplantsimmune(免疫的)tothekindsofdiseasesthatfarmers

7、andgardenersaroundtheworldfeareachyear.Cropfailuresduetodiseaseandviruscouldbecomeathingofthepast.Also，plantsthatarenearextinctioncanbebroughtbacktolifethroughcloning.Throughcloningscientistscandevelop“super”fruitsandvegetablesofsuperiornutritionalquality.Thiscouldm

8、akeforahealthierpopulationoverall.Thisisalreadybeingdonethroughselectivepollination(授粉)，andgeneticcloningcouldtakeittothenextlevel.Byplant