首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
财务会计
Trees should only be pruned when there i
Trees should only be pruned when there i
shuhaiku
2019-12-17
43
问题
Trees should only be pruned when there is a good and clear reason for doing so and,fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially forthis purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.?What was the author's purpose when writing this passage?
选项
A.To give practical instruction for pruning a tree.B.To give a general description of pruning.C.To explain how trees develop diseases.D.To discuss different methods of pruning.
答案
A
解析
这是一篇说明文,讲了修剪的目的以及方法,为修剪树木提供实用的指导,故选A。
转载请注明原文地址:https://ti.zuoweng.com/ti/YAlsKKKQ
相关试题推荐
Whatshouldyouthinkaboutintryingto
Treesshouldonlybeprunedwhentherei
Treesshouldonlybeprunedwhentherei
Treesshouldonlybeprunedwhentherei
Treesshouldonlybeprunedwhentherei
Treesshouldonlybeprunedwhentherei
Whatshouldyouthinkaboutintryingto
Whatshouldyouthinkaboutintryingto
Whatshouldyouthinkaboutintryingto
InEnglishteaching,teachersshouldNOT
随机试题
房地产经纪机构通过网站平台吸引和寻找购房(或承租)人时,其网站平台上房源信息的文
下列哪项是胰腺炎患者营养调控目的?( ) A、胰腺得到修复 B、防止胆汁淤
估测通用设备的重置成本,评估师一般应首先考虑使用()。
某商贸公司为增值税一般纳税人,2018年1月8日上缴2017年12月应纳增值税额
板蓝根在病毒性肝炎治疗中的作用是
标准施工合同的通用条款包括( )。
加强社会主义精神文明建设,提升国民文明素质,应以()为引领,全面提高国民素质和社会文明程度。A.社会主义核心价值观B.中华传统美德C.科学精神D.人文精
治疗食积不化,消化不良,小儿疳积宜选用A.麦芽B.稻芽C.山楂D.神曲E.鸡内金
下列各项属于《妇女权益保障法》面临的任务的有()。A.改善男女同工不同酬状态B.保护妇女不再遭受家庭暴力、性侵犯、被拐卖等威胁C.改善妇女的贫困状态D.
关于住宅专项维修资金使用,下列说法不正确的是()。A.商品住宅的专项维修资金由业主交存B.住宅专项维修资金可用于购买一级市场国债C.住宅专项维修资金可用于