欢迎来到天天文库
浏览记录
ID:16317343
大小:538.00 KB
页数:10页
时间:2018-08-09
《义务教育unit2workingtheland话题语言应用-农业》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、语言积累交际用语话题语言应用-农业说服;劝说(persuasion)I’drather…I’dprefer…because…IfIhaveachoiceI’llchoose…Thisisgoodvaluebecause…It’sbetterto…Idon’tlike…because…Whattheadvantageof…?It’sagreatpitythat…Youneedto…Theadvantagesare…You’lltastethedifferencewhen…话题词句【高清课堂:】Gettoknowthefarmi
2、ngsteps(rice)ploughthefieldsowseeds/growyoungplantsinserttheyoungplantsintothefieldspraytheagriculturalchemicalsharvestrice拓展阅读Americanbeekeepingoperationshavebeenhithardbywhatscientistscallcolonycollapsedisorder.Almosthalfoftheirworkerbeeshavedisappearedduringthep
3、astseason.C.C.D.hasalsobeenreportedinIsrael,EuropeandSouthAmerica.Beesflyawayfromthehiveandneverreturn.Sometimestheyarefounddead;othertimestheyareneverfound.Manycropsandtreesdependonpollinationbybeestohelpthemgrow.Anewreportsaysavirusmaybeatleastpartlyresponsiblefo
4、rthedisorderinhoneybeecoloniesintheUnitedStates.ThisvirusiscalledIsraeliacuteparalysisvirus.ItwasfirstidentifiedinIsraelintwothousandfour.IanLipkinatColumbiaUniversityinNewYorkandateamreportedthenewfindingsinSciencemagazine.DoctorLipkinsaysthevirusmaynotbetheonlyca
5、use.Hesaysitmayworkwithothercausestoproducethecollapsedisorder.Theteamfoundthevirusincolonieswiththehelpofamapofhoneybeegenesthatwaspublishedlastyear.Theyexaminedthirtycoloniesaffectedbythedisorder.Theyfoundevidenceofthevirusintwenty-fiveofthem,andinonehealthycolon
6、y.Thenextstepisfurthertestingofhealthyhives.TheresearcherssuggestedthattheUnitedStatesmayhaveimportedthedisorderinbeesfromAustralia.Theysaythebeesmaycarrythevirusbutnotbeaffected.TheideaisthatunlikemanyAmericanbees,theabilityofAustralianbeestofightdiseasehasnotbeen
7、hurtbythevarroamite.Thisinsectattackshoneybees,whichcouldmakethedisordermorelikelytoaffectahive.Australianbeeproducersrejectthesesuspicions.AndsomeresearcherssuspectthatbeeproductionintheUnitedStatesisdownmainlybecauseoftheweather.Honeybeesgathernectarfromflowersan
8、dtrees.Thesweetliquidgivesthemfoodandmaterialtomakehoney.ButcoldweatherthisspringintheMidwestreducedtheflowofnectarinmanyflowers.Manybeesmayhaves
此文档下载收益归作者所有