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
64
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.
What was the author’s purpose when writing this passage?
选项
A、To discuss different methods of pruning.
B、To explain how trees develop diseases.
C、To give a general description of pruning.
D、To give practical instructions for pruning a tree.
答案
D
解析
本题问作者写这篇文章的目的是什么。通读全文,了解文章大意之后,我们可以推断出作者写此文的目的是为了给人们提供给树木剪枝的指导。因此,本题的正确答案应是D。
转载请注明原文地址:https://kaotiyun.com/show/N2PO777K
0
在职攻硕英语联考
相关试题推荐
Man:Doyouwanttoturnontheair-conditioneroropenthewindows?Woman:Ilovefreshairifyoudon’tmind.Question:Whatc
Inthispassage,scientistswarnof______.Oneofthemostimmediatedangersposedbyabruptclimatechangeis______.
SallywantedtogotoFloridafortheholiday,butherhusbandthought,sayingthattheywouldgotoNewYorktojoinhisp
I’dliketo______yourattentiontoanaspectoftheproblemwhichyouappeartohaveoverlooked.
Emotionisafeelingaboutorreactiontocertainimportanteventsorthoughts.Peopleenjoyfeelingsuchpleasantemotionsasl
Americanshaveagreatloveforinformalityandnowhereisthisbetterexpressedthanintheirlovefornicknames(昵称、绰号).Upon
Thebadlywoundedhave______formedicalattentionoverthoseslightlyhurt.
Whosaysyourjobleavesyounotimetohitthegym?AdetailednewstudyofU.S.physicalactivitypatternsshowsthatmenwho
随机试题
患者,女,27岁。因脑外伤昏迷入院。为供给营养和水分需给予鼻饲。通过鼻饲注入流质饮食后,再注少量温开水的目的是
双闭环调速系统包括电流环和速度环。电流环为外环,速度环为内环,两环是串联的,又称为双环串级调速。()
(2008年4月)简述公务员权利的法律保障。
以下哪项不属于引起产后出血的高危因素
刘某,33岁,孕1产0,12岁来月经,28~30d一次,每次5d,量中等,无痛经。但自人工流产后出现痛经,且逐渐加重。妇科检查:子宫后倾固定,阴道后穹隆处可见紫褐色结节,触痛明显。该病人最可能的诊断为()。
马某,女,68岁。患者15年前无明显诱因出现发热、肌痛,并逐渐出现晨僵,四肢肿胀。曾在某院诊断为“类风湿关节炎”,予强的松等治疗后好转出院。近半年来,患者自觉双侧膝关节疼痛明显加重,伴有双下肢肌肉轻度萎缩,麻木疼痛,常有低热。半月前因劳累过度,出现头痛、恶
职业健康安全与环境管理体系是()管理体系。
TCP/IP模型的传输层有两个协议,第一个协议TCP是一种可靠的面向连接的协议,第二个协议UDP是()。
Atfirst,IthoughtitwaspossiblethatIcouldhaveleftitathome.
A、Theshopisonsale.B、TheT-shirtsfithimperfectly.C、Theproductswereingoodquality.D、Hehadsomeacquaintancesthere.
最新回复
(
0
)