首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Trees should only be trimmed when there is a good and clear reason for doing so and, fortunately ,the number of such reasons is
Trees should only be trimmed when there is a good and clear reason for doing so and, fortunately ,the number of such reasons is
admin
2011-03-01
46
问题
Trees should only be trimmed when there is a good and clear reason for doing so and, fortunately ,the number of such reasons is small. Trimming 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, trimming may be done to make sure that trees have a desired shape or size. Tile 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 thickens its appearance or give it a special shape. Secondly, trimming may be done to make the tree healthier. You may cut out diseased or dead wood ,or branches that are rubbing against each other and thus causing wounds. The health of a tree may be encouraged by removing branches that are blocking up the center and so preventing the free movement of air.
One result of trimming is that an open wound is left on the tree and this provides an easy entry for disease, but it’s 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 the risk of death as far as possible. It is essential to make the area which has been trimmed 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 the garden shops produced especially for this purpose. Trimming is usually done in winter, for you can see the shape of the tree clearly without interference front the leaves and it is, too, very unlikely that the cuts you make will bleed. If this does happen, it is ,of course, impossible to paint them properly.
The author’s purpose in writing this passage is ______.
选项
A、to give practical instructions for trimming a tree
B、to give a general description of trimming a tree
C、to explain how trees develop diseases
D、to discuss different methods of trimming a tree
答案
B
解析
本题考查文章主旨。纵观全文,文章简要讲述了剪枝的理由、时机以及要采取的必要保护措施等一般性的描述,并未深入探讨,因此选[B]一般性地描述剪枝问题。[A]就剪枝给予具体说明与文章内容不符,因为文章没有说明剪枝的细节;[C]原文未提及;文章也未讨论剪枝的各种不同方法,因此排除[D]。
转载请注明原文地址:https://kaotiyun.com/show/VNkd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Lifelearning(sometimescalledun-schoolingorself-directedlearning)isoneofthoseconceptsthatarealmosteasiertoexpla
Lifelearning(sometimescalledun-schoolingorself-directedlearning)isoneofthoseconceptsthatarealmosteasiertoexpla
WhatdowemeanbyaperfectEnglishpronunciation?Inone【C1】______thereareasmanydifferentkindsofEnglishastherearesp
Whatdoesthedoctorsuggestthemanshoulddo?
Readthetextaboutourneighbour.ForQuestions61to65,matchthenumberofeachterm(61to65)tooneofthestatements(At
Readthetextaboutourneighbour.ForQuestions61to65,matchthenumberofeachterm(61to65)tooneofthestatements(At
Laborforceisdefinedasbeingthetotalnumberofpeoplewhoareavailabletoworkandearnincome.Thisdefinitionincludese
Laborforceisdefinedasbeingthetotalnumberofpeoplewhoareavailabletoworkandearnincome.Thisdefinitionincludese
随机试题
在Windows窗口的右上角可以同时显示的按钮是()
A.自行吸收B.胸膜腔穿刺抽液C.胸膜腔闭式引流术D.剖胸止血E.血块和纤维组织剥除凝固性血胸机化的处理原则是
中年男性,胸骨后疼痛,向左肩和左臂内侧放射,伴大汗,窒息感,应用硝酸甘油无明显效果,临床考虑为( )。
泌尿系结石最有效的预防方法是
有关我国建设工程造价的类型和编制时期的一般表述不正确的是()。
将目标划分成许多子目标,将问题划分成许多子问题,寻找解决每一个子问题的方法称为()。
设随机变量X在[-1,2]上服从均匀分布,随机变量则D(Y)=______.
基于精简指令集RISC结构处理的服务器与相应的PC服务器相比,CPU处理能力提高()。
Withonlyabout1000pandasleftintheworld,Chinaisdesperatelytryingtoclonetheanimalandsavetheendangeredspecies.
A.famousB.conductedC.rejectD.influentialE.unrealisticF.developG.failH.drainI.realisticJ.manageK.dro
最新回复
(
0
)