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
公务员
Trees should only be pruned (修剪) when there is a good and clear reason for doing so and, fortunately, the number of such reasons
Trees should only be pruned (修剪) when there is a good and clear reason for doing so and, fortunately, the number of such reasons
admin
2011-01-01
55
问题
Trees should only be pruned (修剪) when there is a good and clear reason for doing so and, fortunately, the number of such reasons is small. Pruning involves 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 trees to grow in their own ways.
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 the branches that are locking up the centre and so preventing the free movement of air.
One result of pruning is that an open would is left on the tree and this provides an easy entry for diseases, but it is a wound that will heal(愈合). Often there is a race between the healing and the disease as to whether the tree will live or die, or that there is a period when the tree is at risk. It should be the aim of every gardener to reduce the risk 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 t, 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 the interference(妨碍) 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.
A good gardener prunes a tree______.
选项
A、several times throughout the year
B、as quickly as possible
C、occasionally when necessary
D、regularly every winter
答案
C
解析
由文章第一句话可知,必要的时候才需要剪枝,但需要剪枝的时候不多。 故选C。
转载请注明原文地址:https://kaotiyun.com/show/xKBq777K
本试题收录于:
中学英语题库教师公开招聘分类
0
中学英语
教师公开招聘
相关试题推荐
关于高斯定理的理解有下面几种说法,其中正确的是()。
作业的布置与批改是教学工作的有机组成部分,应当遵循的基本要求是()。①有明确的目的②内容要符合要求③分量要适当④批改要认真、及时
课程资源不仅包括教材、教具、仪器设备等有形的资源,也包括学生已有的知识和经验、家长的支持态度和能力等无形的资源。()
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousd
Sincethebeginningofhumanevolution,menhavemigrated(迁移)acrosscontinentsinsearchoffood,shelter,safety,andcomforta
Therearemanykindsoffriends.Somearealways【C1】______you,butdon’tunderstandyou.Somesay"onlyafewwordstoyou,but
GrowingnumbersofscientiststhereforeseeAntarcticaasadistantearlywarningsensor,wherepotentiallydangerousglobaltre
Statusesaremarveloushumaninventionsthatenableustogetalongwithoneanotherandtodeterminewherewe"fit"insociety.
ForgetTwitterandFacebook,GoogleandtheKindle.Televisionisstillthemostinfluentialmediumaround.Indeed,formanyof
IwillneverforgettheyearIwasabouttwelveyearsold.Mymothertoldusthatwewouldnotbe【16】Christmasgiftsbecausethe
随机试题
目前生产上常使用压缩空气作为产生等离子弧介质的空气等离子弧切割,用来切割碳素钢和低合金钢。
CO中毒氯乙烯中毒
某依法必须进行招标的项目,由于需要澄清与修改的内容特别多,招标人组织设计单位和招标代理机构对招标文件完成澄清与修改时,距项目的开标时间仅剩下了5日时间。为保证投标人在开标后不投诉,招标人在发放招标文件澄清与修改时,要求每个投标人写下书面承诺:不会因为招标文
世贸组织是()谈判的成果。
资料一:甲公司为一个大型国有企业,主营业务为原油贸易,公司资金雄厚,在银行的信用等级较高,银行给该公司提供的贷款额度较多;甲公司拥有一流的营销和管理团队:甲公司拥有国内最强的石油仓储能力;甲公司缺乏石油开采和炼化方面的技术专家;原油贸易环节的利润
一、注意事项1.监考老师发给你的测试材料分为两部分:试题本和答题纸。2.测试开始前。请在试题本和答题纸上指定位置先填写好自己的姓名、准考证号等项内容。然后再开始答题。3.申论考试与传统的作文考试不同,是分析驾驭材料的能力与表达能力并重的考试。作答参考
2013年1—2月份,社会消费品零售总额37810亿元,同比增长12.3%。其中,限额以上企业(单位)消费品零售额18001亿元,增长10.2%。按经营单位所在地分,1—2月份,城镇消费品零售额32656亿元,同比增长12.1%;乡村消费品零售额5154亿
“喜极而泣”所体现的情绪状态是
下列属于大陆法系的主要特点的是()。
Allthepupilsseemtobevery(cheerful).
最新回复
(
0
)