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

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.
相似考题

1.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.TB.F7.The best way to learn through mistakes is to try your best to speak.A.TB.F8.When you write, you will learn how to speak.A.TB.F9.When you read, you should choose interesting books for you.A.TB.F10.When you find some new words in reading, you should guess their meanings first.A.TB.F

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

3.Erna Hart _______ a good swimmer; she swam across the English Channel when she was only fourteen years old!A、must beB、must have beenC、could beD、should have been

4.We would suggest that we ()aside the problem of agency until circumstances necessitate doing so.A、should have leftB、leftC、will leaveD、leave

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。
更多“Trees should only be pruned when there is a good and clear reason for doing so and, ”相关问题

  • 第1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2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3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.
    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。

  • 第5题：

    Good morning, John . How are you doing?（）

    AI'm pleased. 

    BGood night. 

    CNot so bad. And you? 

    DHow do you do?


    C
    略

  • 第6题：

    What kind of questions should we ask our students when we want to give them a reason to read?
    The questions should have a good general idea of what the text is about, should be concerned with the general meaning or with the most important points of the text, and not focus on minor details, and should be fairly easy to answer and not too long.
    略

  • 第7题：

    When should you enable Network Address Translation Transparency (NAT-T) on the Teleworker?（）

    • A、when a router between the Teleworker router and the head-end VPN router is doing NAT/pNAT and does not support IPSec pass-through 
    • B、when the Teleworker router itself is doing NAT/pNAT
    • C、always
    • D、never

    正确答案:A

  • 第8题：

    jim has created a field hint for the address field. Users tell him this text disappears when they click in the address field. which one of the following is most likely reason?（）

    • A、 the address field is computed 
    • B、 jim should have used a text popup       
    • C、 jim stored the field hint in the database    
    • D、 field hint only display when the user has not clicked in the field （field hint）

    正确答案:D

  • 第9题：

    填空题
    The only way to conquer a fear is to face it, and doing so as frequently as possible.

    正确答案： doing应改为to do[解析] 此题考查and连接的并列结构。整个句子是不定式结构作表语，因此and前后均应为动词不定式。
    解析： 暂无解析

  • 第10题：

    单选题
    Standing under a big tree to（）getting wet in a rain is not a good choice. This is especially true when it is the thunderstorm reason.
    A

    avoid   

    B

    keep   

    C

    stop

    D

    drop


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    When evacuating a seaman by helicopter lift，which course should the ship take?（）
    A

    Downwind so that the apparent wind is close to nil

    B

    A course that will keep a free flow of air，clear of smoke，over the hoist area

    C

    A course that will have the hoist area in the lee of the superstructure

    D

    With the wind dead ahead because the helicopter is more maneuverable when going into the wind


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    When doing business in the US, you should take the following considerations into（）.
    A

    adventure

    B

    account

    C

    advice

    D

    ambition


    正确答案： D
    解析： 暂无解析

  • 第13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14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15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.
    ?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.

    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。

  • 第16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.
    A good gardener prunes a tree__________.

    A.at intervals throughout the year
    B.as quickly as possible
    C.occasionally when necessary
    D.regular every winter

    答案：C
    解析：
    由第一段第一句“Trees should only be prunedwhenthereis a good and clear reasonfor doing so”可知，必需时才会修剪树木，故选C。

  • 第17题：

    Standing under a big tree to（）getting wet in a rain is not a good choice. This is especially true when it is the thunderstorm reason.

    Aavoid   

    Bkeep   

    Cstop

    Ddrop


    A
    略

  • 第18题：

    Good morning, John . How are you doing?（）

    • A、I'm pleased. 
    • B、Good night. 
    • C、Not so bad. And you? 
    • D、How do you do?

    正确答案:C

  • 第19题：

    The only way to conquer a fear is to face it, and doing so as frequently as possible.


    正确答案:doing应改为to do[解析] 此题考查and连接的并列结构。整个句子是不定式结构作表语，因此and前后均应为动词不定式。

  • 第20题：

    单选题
    Part of the reason for the change in focus from economics to a more multifaceted approach to the psychological effects on doing work was __________.
    A

    due to the recognition that workers should be happy at work to maintain high productivity

    B

    a general conclusion that pay was sometimes not the most important factor

    C

    because the Hawthorne study continued for so long

    D

    because the workers requested it


    正确答案： C
    解析：
    本题是推断题。第二段倒数第二句提到：总体上，研究人员从他们的试验中总结出经济上的激励(薪水)不是生产力的唯一源泉；在某些情况下，甚至不是最重要的源泉。由此可推断出人们关注的重点已经不是经济方面，而是工作时的心理影响等更多方面，所以答案为B。

  • 第21题：

    单选题
    jim has created a field hint for the address field. Users tell him this text disappears when they click in the address field. which one of the following is most likely reason?（）
    A

     the address field is computed 

    B

     jim should have used a text popup       

    C

     jim stored the field hint in the database    

    D

     field hint only display when the user has not clicked in the field （field hint）


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Good morning, John . How are you doing?（）
    A

    I'm pleased. 

    B

    Good night. 

    C

    Not so bad. And you? 

    D

    How do you do?


    正确答案： C
    解析： 暂无解析

  • 第23题：

    问答题
    What kind of questions should we ask our students when we want to give them a reason to read?

    正确答案： The questions should have a good general idea of what the text is about, should be concerned with the general meaning or with the most important points of the text, and not focus on minor details, and should be fairly easy to answer and not too long.
    解析： 暂无解析

  • 第24题：

    单选题
    When checking a mooring line，you should（）.
    A

    ensure the bight is not fouled between the ship and the dock by taking up slack

    B

    pay out slack smartly and keep free for running

    C

    secure more turns to hold the line against any strain，then clear the area

    D

    surge the line so that it maintains a strain without parting


    正确答案： D
    解析： 暂无解析

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