厦门大学继续教育2015英语复习题

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1、厦门大学网络教育2015-2016学年第一学期《英语2》课程复习题I.ReadingComprehension:Passage1Treesshouldonlybepruned(修剪)whenthereisagoodandclearreasonfordoingsoand,fortunately,thenumberofsuchreasonsissmall.Pruninginvolvesthecuttingawayofovergrownandunwantedbranches,andtheinexperi

2、encedgardenercanbeencouragedbythethoughtthatmoredamageresultsfromdoingitunnecessarilythanfromleavingthetreetogrowinitsownway.First,pruningmaybedonetomakesurethattreeshaveadesiredshapeorsize.Theobjectmaybetogetatreeoftherightheight,andatthesametimetohe

3、lpthegrowthofsmallsidebrancheswhichwillthickenitsappearanceorgiveitaspecialshape.Secondly,pruningmaybedonetomakethetreehealthier.Youmaycutoutdiseasedordeadwood,orbranchesthatarerubbingagainsteachotherandthuscausewounds.Thehealthofatreemaybeencouragedb

4、yremovingbranchesthatareblockingupthecenterandsopreventingthefreemovementofair.Oneresultofpruningisthatanopenwoundisleftonthetreeandthisprovidesaneasyentryfordisease,butitisawoundthatwillheal.Oftenthereisaracebetweenthehealingandthediseaseastodecidewh

5、etherthetreewillliveordie,sothatthereisaperiodwhenthetreeisatrisk.Itshouldbetheaimofeverygardenertoreducethatriskofdeathasfaraspossible.Itisessentialtomaketheareawhichhasbeenprunedsmoothandclean,forhealingwillbesloweddownbyroughness.Youshouldallowthec

6、utsurfacetodryforafewhoursandthenpaintitwithoneofthesubstancesavailablefromgardenshopsproducedespeciallyforthispurpose.Pruningisusuallydoneinwinter,forthenyoucanseetheshapeofthetreeclearlywithoutinterferencefromtheleavesandalsoitisveryunlikelythatthec

7、utsyoumakewillbleed.Ifthisdoeshappen,itis,ofcourse,impossibletopaintthemproperly.1.Pruningshouldbedoneto_____.BA.makethetreegrowtallerB.improvetheshapeofthetreeC.getridofthesmallbranchesD.makethesmallbranchesthicker2.Treesbecomeunhealthyifthegardener_

8、____.AA.allowstoomanybranchestogrowinthemiddleB.doesnotprotectthemfromthewindC.forcesthemtogrowtooquicklyD.damagessomeofthesmallsidebranches3.Whyisaspecialsubstancepaintedonthetree?BA.Tomakeawoundsmooth.B.Topreventdiseaseenteringawound.C.Tocov