


下载本文档
版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领
文档简介
课时作业(八)Unit3SectionⅡGrammarandusage&IntegratedskillsⅠ.阅读理解APeoplewhoaregoodatgrowingplantsknowthatit'spossibletoplantwhatseemstobealifelessstickandproduceatreeorotherkindsofplants.Thestickisreallywhatiscalledahardwoodcutting.Fromthesecuttings,trees,vines(藤蔓)exceptpinetreescangrow.Theyarecalledhardwoodbecausethepiecesarewoodyratherthanleafy.Gardenerscanexpectcloseto100percentsuccesswithplantssuchasgrape,gooseberry,privet,spiraeaandhoneysuckle.However,thismethoddoesnotworkwithapple,mapleoroaktrees,fortheylackleaves,hardwoodcuttingsarelessperishable(易腐烂的)thansoftwoodcuttings.Ifyouwanttodevelopagreenthumb—orgetreallygoodatgrowingplants—startyoureffortwithhardwoodcuttingsofwillow.Willowtreesoftenspreadfrombranchesthattakerootontopofthegroundthroughthewinter.Mostotherplantsdemandalittlemoreattention.Autumnisagoodtimetostarthardwoodcuttings.First,choosesomeshoots(新枝)thatgrewduringthemostrecentgrowingseason—theyoungestshoots.Cuttheshootstoalengthofabout15centimeters.Makesureyourememberwhichendwasup—theendthatisfartherfromtheroot.Expertsdothisbycuttingthebottomsoffdirectlyandthetopsatananglesotheyavoidmistakesduringplanting.Then,placethebottomofeachcuttingintosomewell-drained(排水良好的)soil.Ifyouhavetoplantinthespring,thecuttingsneedtobekeptcoolandwetthroughthewinter.Thetraditionalmethodistoplacethecuttingstogetherandburythemupsidedowninthesoil.Thisletsthebottomsofthecuttingsbefirsttofeelthewarmingeffectsofspringsunontheground.Putthecuttingsinaclosedplasticbag,putawetpapertowelaroundthebag,andthenputthewholethinginanotherplasticbag.1.Whatcanwelearnaboutwoodyplantsaccordingtothetext?A.Gardenerscanget100%successwiththem.B.Thecuttingsfromthemdryoutbeforerootsform.C.Allwon'tgrowfromhardwoodcuttings.D.They'refarlessreliablethanleafyplants.2.Whichofthefollowingfitsthemethodofhardwoodcuttingsproperly?A.Appletrees. B.Oaktrees.C.Pinetrees. D.Willowtrees.3.Whatisthefourthparagraphmainlyabout?A.Howtomakecuttings.B.Whentomakecuttings.C.Wheretoputcuttings.D.Whattomindatchoosing.4.Whatdoestheauthorstressaboutcuttingsinthelastparagraph?A.Thechoice. B.Thestorage.C.Thetemperature. D.Theseasons.BToday,Chinahasconducteditsfirst3Dprintingexperimentinspaceinanewlylaunchedspacecraft,whichwasputintolow-EarthorbitbyChina'sLongMarch5Bheavyliftcarrierrocket.VideobroadcastonCCTVshowedthattheprinterhasprintedaflatsectionofahoneyb-shaped(蜂巢状的)structureaswellasasymbolofChinaAerospaceScienceandTechnologyCorp,theparentpanyoftheChinaAcademyofSpaceTechnology.Theexperimentwasdonebya3Dprinter,developedandbuiltbyitsBeijingSpacecraftsManufacturingFactoryinsidetheprototypeofChina'snew-generationmannedspacecraft.Theprinter,namedtheSpace-BasedpositeMaterial3DPrintingSystem,usescarbonfiber-reinforcedmaterialstoautonomouslyprintobjects.Itisinstalledinthereentrymoduleoftheexperimentalspaceship,andwillbebroughtbacktoEarthoncethemodulereturns.Theprinterfeaturesadvancedtechnologiesinmaterialmodeling,precisioncontrolandautomation.Oncethespace-based3Dprintingtechnologybeesoperationallyready,itcanextensivelybenefitspaceprogramsasastronautscanuseittomanufacturealotofthingstheycurrentlyneedtoobtainfromresupplyflightsbycargospacecraft.WangYanan,editor-in-chiefoftheAerospaceKnowledgemagazine,saidthe3Dprinterwillbeveryusefulinextendedspacemissions,suchasthoseinaspacestation,becauseitwillallowastronautstomakeponentsquicklyandconvenientlyinspace.Thetechnologywillsavefuturespacejourneysconsiderableresourcesandcosts.Infact,thedeviceisnottheonlyrepresentativeof3Dprintingonboardtheprototype.ACubeSatdeployer,designedandmadethrough3DprintingbyCoSatsSpaceTechnology,isalsocarriedbythespacecrafttochecktheadaptabilityof3D-printedequipmentinspace.CoSatsChiefOperatingOfficerBaiRuixuesaidthe3D-printeddeployerismuchlighterandstrongerthanitscounterpartsanditwillhavehugepotentialinthespaceindustry.5.WhatdidthevideobroadcastonCCTVshowtotheaudience?A.Theprocessandtheproductsofthe3Dprinting.B.Thenameandtheshapeofthe3Dprinting.C.Thesignificanceofthe3Dprintingtechnology.D.Therelationshipbetweenthetwopanies.6.Whatifaponentisbrokeninthespacestationinthefuture?A.ItwillbesentbyspaceshipbacktoEarthforrepair.B.Theastronautscanfixitconvenientlybyhandonthespot.C.Theastronautscanmakeoneusing3Dprintingandreplaceit.D.Itwillbeunloadedandabandonedinspace.7.Whyisthelastparagraphmentioned?A.TointroducetheCubeSatdeployerproducedinspace.B.Toexplaintheadvantagesofthe3Dprintinginspace.C.Toshowtheadaptabilityof3Dprintinginspace.D.Toindicateabrightfutureof3Dprintinginspace.8.Whatcanbethemostsuitabletitleforthetext?A.3DPrintingExperimentConductedinSpaceB.3DPrintingSettoHelpEaseSpaceTripsC.3DPrintingLaunchedbyLongMarch5BD.3DPrinting—aNewWaytoExploreSpaceⅡ.七选五Allovertheworldpeoplearehookedonsports,whichhelpthemtostrengthentheirbodyandbuildtheircharacter.__1__Theyimprovetheparticipants'physicalskills,andprovideentertainmentfortheaudienceaswell.Manypeopleliketowatchothersplaygames.__2__Oftentheygetveryexcitedwhen“their”playerorteamwins.Iftheyarecrazyaboutthegameortheplayer,thenthey'llbeetheirdiehardfans.Somesportsaresointerestingthatpeopleeverywheregoinforthem.Football,forexample,hasspreadaroundtheworld.Swimmingispopularincountriesneartheseaorinthosewithmanyrivers.__3__Andthinkofpeopleincoldcountries.MassesofpeoplelovetoskateorskiinJapan,NorwayorCanada.__4__Chineseboxing,alsohasaverylonghistory.Butbasketballandvolleyballarerathernew,whichstartedinthelateofthenineteenthcentury.Peopleareinventingnewsportsorgamesallthetime.Waterskiing,asamoderngame,isoneofthenewestinthe
温馨提示
- 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
- 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
- 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
- 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
- 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
- 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
- 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
最新文档
- 现代档案保护措施试题及答案
- 提升食品安全意识的试题及答案
- 2024年收纳师考试重要试题及答案
- 2024年档案管理员考题剖析试题及答案
- 二级建造师考试全景复习与试题及答案
- 二级建造师考试常考题型试题及答案
- 收纳师备考效率提升技巧试题及答案
- 2024年 收纳师考试导向策略试题及答案
- 咖啡种植与环境的试题及答案
- 2024年系统分析师考试的创新思维:试题及答案
- 2024年初中学业音乐科目水平考试题库及答案
- 两位数乘一位数计算质量作业口算题
- 用户体验与用户界面设计培训:提高用户体验与用户界面设计的技术与方法
- 小学数学六年级下册数学广角鸽巢问题教学课件22
- 小区清明节防火应急预案
- 项目现场组织机构情况
- 国际贸易概论(第四版) 课件全套 姚大伟 第1-5单元 国际贸易基础理论 -“互联网 +”时代背景下的国际贸易新发展
- 2023分布式光伏电站安装作业指导书
- 浙江省残疾儿童康复服务记录表
- 过程审核检查表-示例
- 二年级上册音乐课程纲要
评论
0/150
提交评论