Trees should only be pruned when there is a good and clear reason for doing so and,

题目
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 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 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 hurts 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?

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.
参考答案和解析
答案:A
解析:
这是一篇说明文,讲了修剪的目的以及方法,为修剪树木提供实用的指导,故选A。
如果没有搜索结果或未解决您的问题,请直接 联系老师 获取答案。
相似问题和答案

第1题:

Food should be taken in moderate quantity only when one feels hungry.


参考答案:当人饥饿时,应适度进食。

第2题:

Passage Three

Trees should only be pruned (修剪) when there is a good reason for doing so. Many gardeners believe 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. The object may be to get a tree of the right height, and 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. A tree may grow healthier 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 wound is left on the tree and this provides an easy entry (进入) for diseases, 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. Pruning is usually clone in winter, for then you can see the shape of the tree clearly without the interference from the leaves.

41. According to the article, which of the following statement is NOT true?

A. Pruning is necessary when there are unwanted branches.

B. Damage is done to a tree if it is left to grow in its own way.

C. Diseased or dead branches should be cut away if they are found to rub against each other.

D. Growing side branches often prevent air from moving freely.


正确答案:B

41.答案为B  根据第一段最后一句可知该陈述是错误的,修剪只是在有必要的时候才进行。

第3题:

In learning a foreign language, one should first pay attention to speaking.It is the ground-work(基础)of reading and writing. You'd better try your best to speak. Don't be afraid of making mistakes. While you are doing this, a good exercise is to write --- keep a diary, write notes or letters and so on. Many mistakes in your speaking will be easily found when you write.Through correcting the mistakes.

If you are slow in speaking,When you not important to the sentence. You can do that some other time.

6.Speaking is the ground-work while you are learning a foreign language.

A.T

B.F

7.The best way to learn through mistakes is to try your best to speak.

A.T

B.F

8.When you write, you will learn how to speak.

A.T

B.F

9.When you read, you should choose interesting books for you.

A.T

B.F

10.When you find some new words in reading, you should guess their meanings first.

A.T

B.F


参考答案:ABBAA

第4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 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 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 hurts 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.
Pruning should be done to__________.

A.make the tree grow taller
B.improve the shape of the tree
C.get rid of the small branches
D.make the small branches thicker

答案:B
解析:
由第二段第一句“pruning may be done to make sure that trees have a desired shape or size”可知答案选B,即修剪有时是为了树木有个好外形。

第5题:

When should the emergency position-indicating radio beacon be activated after abandoning an OSV ________.

A.Immediately

B.After one hour

C.Only when another vessel is in sight

D.Only after sunset


正确答案:A

第6题:

Erna Hart _______ a good swimmer; she swam across the English Channel when she was only fourteen years old!

A、must be

B、must have been

C、could be

D、should have been


正确答案:A

第7题:

What does the man mean?

A. He got there in only five minutes.

B. He has a good reason for being late.

C. He is used to waiting for the woman.


正确答案:B

第8题:

We would suggest that we ()aside the problem of agency until circumstances necessitate doing so.

A、should have left

B、left

C、will leave

D、leave


参考答案:D

第9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 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 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 hurts 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.
Why is a special substance painted on the tree?

A.To make a wound smooth.
B.To prevent disease entering a wound.
C.To cover a rough surface.
D.To help a wound to dry.

答案:B
解析:
由第三段“One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease”和“You should allow the cut surface to dry for a few hums and then paint it with one of the substances available from garden shops produced especially for this Justification”可知。修剪树木留下的伤口给了疾病侵袭的机会,因此涂刷特殊物质是为了阻挡疾病通过伤口进入树木。故选B。

第10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 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 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 hurts 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.
Trees become unhealthy if the gardener__________.

A.allows too many branches to grow in the middle
B.does not protect them from wind
C.forces them to grow too quickly
D.damages some of the small side branches

答案:A
解析:
由第二段最后一句“the health of a tree may be encouraged by removing branches that are blocking up the centre”可知,剪去阻塞树木中央空间的枝条可使树木健康生长,那么相反,保留这些枝条则会导致树木长得不健康,因此答案为A。

更多相关问题