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
专升本
Trees should only be pruned when there is a good and clear reason for doing so and, fortunately, the number of such reasons is s
Trees should only be pruned when there is a good and clear reason for doing so and, fortunately, the number of such reasons is s
admin
2019-05-23
23
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 all 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 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.
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
转载请注明原文地址:https://kaotiyun.com/show/uBDC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Isuggestedheshould_______himselftohisnewconditions.
A、Theyshouldhelpmaintaintheequipment.B、Theyshouldkeepawatchfuleyeontheirchildren.C、Theyshouldstoptheirchildre
A、ShehasbeenlongingtoattendHarvardUniversity.B、She’llconsidertheman’ssuggestioncarefully.C、Shehasfinishedherpr
Thehumanbraincontains10thousandmillioncellsandeachofthesemayhaveathousandconnections.Suchenormousnumbersused
Itissohot.Youshouldputthefoodintotherefrigeratornow,otherwise;itwill_______soon.
Dogsaresocialanimalsandwithoutpropertraining,theywillbehavelikewildanimals.Theywillsoilyourhouse,destroyyour
JennyisAanuniversityBstudent,CandsheisanDhonestgirl.
Thisschoolputsemphasisonstudents’abilitytosolveproblemsindependently.
IAhopeyouBarenotgettingCboringofmyDconversation.
Whenshouldachildstartlearningtoreadandwrite?ThisisoneofthequestionsIammostfrequentlyasked.Thereisnohard
随机试题
惩办就意味着严惩,必要时可以不依法定罪量刑。()
肾病综合征患儿易合并感染的主要原因是
对变异型心绞痛疗效最好的药物是
甲公司2005年1月1日对乙公司投资,其投资占乙公司股本的80%,投资成本为300000元。甲公司按权益法核算该投资。乙公司2005年、2006年和2007年实现净利润(亏损)分别为-300000元、-200000元、350000元,2005年至200
下列资产损失,不属于由企业自行计算扣除资产损失的是()。
下图非洲局部地区气候类型分布图,读图完成问题。图中荒漠化严重的地区是()。
JamesMartin认为,主题数据库是与企业经营主题有关而不是与一般的应用项目有关的数据库,下列论述中哪个是不正确的?()
下列叙述中正确的是()。
You______yesterdayifyouwerereallyseriousaboutthejob.
Catherine,Iwantyoutobethefirsttoknowtheresultsofmyfinalexaminations.I’vejustpassedallexaminationsandIa
最新回复
(
0
)