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
37
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://jikaoti.com/ti/aMX4FFFM
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
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
Duringthesummerholiday,IthinkIshoulddosomething【M1】______meaningfulinsteadtouring.SoIgotajo
Duringthesummerholiday,IthinkIshoulddosomething【M1】______meaningfulinsteadtouring.SoIgotajo
Duringthesummerholiday,IthinkIshoulddosomething【M1】______meaningfulinsteadtouring.SoIgotajo
—Ishouldhavegonetoseethefilmwithyou.—______.
Theevidenceforharmonymaynotbeobviousinsomefamilies.Butitseemsthatfouroutoffiveyoungpeoplenowgetonwithth
Therearemanykindsoffriends.Somearealways【C1】______you,butdon’tunderstandyou.Somesay"onlyafewwordstoyou,but
Therearemanykindsoffriends.Somearealways【C1】______you,butdon’tunderstandyou.Somesay"onlyafewwordstoyou,but
ForgetTwitterandFacebook,GoogleandtheKindle.Televisionisstillthemostinfluentialmediumaround.Indeed,formanyof
IwillneverforgettheyearIwasabouttwelveyearsold.Mymothertoldusthatwewouldnotbe【16】Christmasgiftsbecausethe
随机试题
某客户购买了相机,系统会自动推荐存储卡、相机包等附加产品,这属于个性化推荐形式中的
英国古典经济学家亚当.斯密以制针为例说明以下哪一点的好处( )
患者,女性,50岁。反复上腹部疼痛、腹胀5年,无规律性,查体:消瘦,上腹压痛,有舌炎,贫血貌。胃镜检查示黏膜红白相间,以白为主,皱襞平坦,黏膜下血管透见,黏液湖缩小。黏膜活检呈重度不典型增生。在我国这种胃炎主要的好发部位是
下列哪种情况不首选胰岛素()
财产物资的盘盈盘亏报经批准处理时,一定会影响当期损益。()
关于职业道德建设,正确的说法有()
义真寻都督司、雍、秦、并、凉五州诸军、建威将军、司州刺史,持节如故。以段宏为义真咨议参军,寻迁宋台黄门郎,领太子右卫率。宏,鲜卑人也,为慕容超尚书左仆射、徐州刺史。高祖伐广固,归降。太祖元嘉中,为征虏将军、青冀二州刺史。追赠左将军。时义真将镇洛阳,而河南萧
在行政信息的沟通过程中,政府经常举办一些听证会,这一沟通模式属于()
某班有英语、数学、美术、舞蹈四个学习小组,班主任要求每一个学生加入且只加入两个。无论如何安排,都有至少5名学生加入的学习小组完全相同。问该班至少有多少名学生?()
【S1】【S3】
最新回复
(
0
)