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 pruned (修剪, 整枝) when there is a good and clear reason for doing so and, fortunately, the number of such rea
Trees should only be pruned (修剪, 整枝) when there is a good and clear reason for doing so and, fortunately, the number of such rea
admin
2015-12-31
50
问题
Trees should only be pruned (修剪, 整枝) 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 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 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 wound on the tree 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 in winter, for then you can see the shape of the tree clearly without interference from 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.
Trees become unhealthy if the gardener______.
选项
A、damages some of the small side branches
B、forces them to grow too quickly
C、does not protect them from the wind
D、allows too many branches to grow in the middle
答案
D
解析
本题是一道具体细节题。问如果园丁怎样做树木就会生病。利用查阅式阅读法,我们可以在文章的第二段的后半部分中找到相关内容。这部分指出,可以通过剪枝增进树的健康,可以砍掉病死枝干或互相摩擦的树枝以防磨伤。将生长在树中央阻碍空气流通的枝条剪掉可以有利于树的健康。因此,本题的正确答案应是D“听任树中间部分的许多树枝任意生长”。
转载请注明原文地址:https://kaotiyun.com/show/y2PO777K
0
在职攻硕英语联考
相关试题推荐
Inthispassage,scientistswarnof______.Accordingtothepassage,inthelongrun,abruptclimatechange______.
Woman:Henry,yourarticleinthecampusnewswasexcellent.Man:Ionlywishtheyhadpublishedtheentirething.Question:Wha
ThelargesizeandroughlycircularshapeofthePacificmadesomescientiststhinkthatit______aholeleftwhenthemoonsep
SpeakerA:Canyoutellmesomethingaboutyourcompany?SpeakerB:______Ourcompanywasestablishedin1953.Weproduceawid
Whenwecreditthesuccessfulpeoplewithintelligence,physicalstrengthorgoodluck,wearemakingexcusesforourselvesbeca
Antsfirstcapturedtheattentionofsoftwareengineersintheearly1990s.Asingleantcannotdomuchonitsown,butagroup
Antsfirstcapturedtheattentionofsoftwareengineersintheearly1990s.Asingleantcannotdomuchonitsown,butagroup
Antsfirstcapturedtheattentionofsoftwareengineersintheearly1990s.Asingleantcannotdomuchonitsown,butagroup
Antsfirstcapturedtheattentionofsoftwareengineersintheearly1990s.Asingleantcannotdomuchonitsown,butagroup
随机试题
6个月患儿吐、泻3天,大便10~15次/天,呈蛋花汤样,尿量极少,皮肤弹性差,可见花纹,前囟、眼窝明显凹陷,四肢厥冷,大便镜检偶见白细胞,血清钠135mmoL/L。该患儿腹泻的病原以哪一种致病微生物的可能性较大
出版物在大宗架位上货架时,同系列、同书号的书,最好放在同一架子上。()
下列作家与作品归属有误的是()
男性,70岁,间断胸骨后不适半年,近一个月来吞咽食物时有轻度梗阻感,不吐,偶有食物反流。钡餐示:食管下段管壁僵硬,黏膜紊乱有中断。最可能的诊断是
需要添加抑菌剂的注射剂有()
某市法院受理了中国人郭某与外国人珍妮的离婚诉讼,郭某委托黄律师作为代理人,授权委托书中仅写明代理范围为“全权代理”。关于委托代理的表述,下列哪一选项是正确的?(2013年卷三第42题)
依据《建设工程工程量清单计价规范》的规定,铁皮和卷材天沟按()计算工程量。
背景:已知某工程的网络计划中相关资料如下表所示。问题:计算总工期,以及网络图中各工作的六个时间参数(ES、EF、LS、LF、TF、FF)。
中国农业银行现任党委书记、董事长是()。
•Readthearticlebelowaboutafurnitureretailer.•Foreachquestion(23-28),ontheoppositepage,choosethecorrectanswer.
最新回复
(
0
)