首页
登录
职称英语
Why should pruning be done? [originaltext] Trees should only be pruned when
Why should pruning be done? [originaltext] Trees should only be pruned when
游客
2024-10-15
40
管理
问题
Why should pruning be done?
Trees should only be pruned when there is a good and clear reason for doing so and the number of such masons is small. Pruning involves the cut ting 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 heavier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. Removing branches that are blocking up the center and so preventing the free movement of air may en courage the health of a tree.
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 that risk of death as far as possible. It is essential to make the area, 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 hours and then paint it with one of the substances available from garden shops produced especially for this purpose. Pruning is usually done ih winter, for then you can see the shape of the tree clearly 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.
选项
A、To make the tree grow taller.
B、To improve the shape of the tree.
C、To get rid of the small branches.
D、To make the small branches thicker.
答案
B
解析
从文中我们知道剪枝的两个原因是“to make sure that trees have a desired shape or size”以及“make the tree heavier”,因此答案是B。
转载请注明原文地址:http://tihaiku.com/zcyy/3802735.html
相关试题推荐
NATOtroopswilljoinin______.[br][originaltext]NATOtroopsaretojoint
Whendidtheworld’spopulationreachsixbillion?[br][originaltext]F:Profes
Whendidtheworld’spopulationreachsixbillion?[originaltext]F:ProfessorLe
Therescueeffortsconcentratedmainlyon[originaltext]Canadianpoliceand
Whatisthisnewsitemmainlyabout[originaltext]SomeHotmailusersarerep
Accordingtothepassage,"scheduling"meansthatyou[br][originaltext]Li
Accordingtothepassage,newwordstendtocomefrom[br][originaltext]Ne
Accordingtothepassage,newwordstendtocomefrom[originaltext]Newword
WhichofthefollowingstatementsisCORRECTaboutMary?[br][originaltext]M:
WhichofthefollowingstatementsisCORRECTaboutMary?[br][originaltext]M:
随机试题
Currenteconomichardshipshavehadwhatiscalledinconstitutionallawa"
Undergroundticketsareavailableatallundergroundstations.Ticketsprice
以下收载生物制品的是哪一版药典A.2000年版 B.2010年版 C.
2008年1月平安保险公开发行400多亿元的(),该产品不设重设和赎回条款,它的
下面( )属于借款人挪用贷款的情况。A.用流动资金贷款购买辅助材料 B.
应对方式问卷的应用价值包括()。 (A)为选拔人才提供帮助(B)评估精神障
任何单位或个人开展医疗活动,必须依法取得A.《设置医疗机构批准书》 B.《设置
甲是一名明星,深受广大群众喜爱,且收入不菲。后来2018年2月4日甲与乙领证结婚
基于产业结构优化和区域协调发展的目标,我国工业结构要通过()措施加以调整。
关于川崎病,是一种以全身性中、小动脉炎性病变为主要病理改变的急性热性发疹性疾病,
最新回复
(
0
)