首页
登录
职称英语
Trees should only be pruned when there is a good and clear reason for doing s
Trees should only be pruned when there is a good and clear reason for doing s
游客
2025-03-29
7
管理
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 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 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. [br] A good gardener prunes a tree______.
选项
A、at intervals throughout the year
B、as quickly as possible
C、occasionally when necessary
D、regular every winter
答案
C
解析
根据文中第一段的“more damage results from doing it unnecessarily than from learing the tree to grow in its own way.”可知,不必要的剪枝会给树木带来更多的伤害。据此可知,好的园丁只是在必要的时候才修剪树木,C项正确。
转载请注明原文地址:https://tihaiku.com/zcyy/4017633.html
相关试题推荐
AWhileexpertsinbasicscienceareimportant,BskilledtalentsshouldbetheCo
Criticismwithoutsuggestingareasofimprovementisnot______andshouldbeavoi
Writeapassageofabout150wordsonthefollowingtopic:ShouldAfricandi
PerhapsIshouldnothavedoneso,butIchangedmymindaboutthenewjobeven
Aschildrengetolder,self-disciplineshouldtaketheplaceofimposeddisc
Aschildrengetolder,self-disciplineshouldtaketheplaceofimposeddisc
Aschildrengetolder,self-disciplineshouldtaketheplaceofimposeddisc
Aschildrengetolder,self-disciplineshouldtaketheplaceofimposeddisc
Inno______shouldyoudothiswithouthelpandadvicefromyourdoctor—restricti
Itissuggestedthatallgovernmentministersshould______informationtotheirf
随机试题
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_055[/audioFiles]
温室效应greenhouseeffect
StopBeingaPeoplePleaser1.Say"no"Givereasonsinsteadof【T1】excus
男,8岁,因"身材矮小"就诊。体检:身高100cm,体重19kg,身材匀称,面容
A.经中心静脉行TPN B.经周围静脉行TPN C.要素饮食 D.管饲
对使用假资格证书的,一经查实,按弄虚作假、骗取教师资格处理,()年内不得申请认定
休克补液治疗后,临床上微循环改善的最重要指标是A.血压回升 B.口渴减轻
(2019年真题)从事会计工作2年且具有助理会计师专业技术资格人员,可担任单
根据《标准设计施工总承包招标文件》(2012年版)的规定,承包人应当在收到经监理
患者无痛性黄疸,尿中胆红素阳性,尿胆原阴性。最可能的诊断是( )。A.病毒性肝
最新回复
(
0
)