Trees should only be pruned (修剪) when there is a good and clear reason for doing so and , 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 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 cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the center 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 (愈合). 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 important 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 to dry for a few hours and then paint it with one of the materials 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 (妨碍) 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 .
1..Why should pruning be done?
A.To make the tree grow taller. B.To improve the shape of the tree.
C.to get rid of the small ranches . D.To make the small branches thicker.
2..Trees become unhealthy if the gardener__________.
A. giving a tree a special shape and a definite height
B. removing small side branches and making a tree look less thick
C. allowing too many branches to grow in the middle
D. having a tree surrounded by many other trees
3..Why is a special material painted on the tree?
A.To help a wound to dry. B.to cover a rough surface.
C.To make a wound smooth. D.To prevent disease entering a wound.
4..A good gardener prunes a tree _________ .
A.several times throughout the year B.as quickly as possible
C.occasionally when necessary D.regularly every winter
5..What was the author’s purpose when writing this passage?
A.To discuss different methods of pruning.
B.To introduce some common knowledge of pruning.
C.To explain how trees develop disease.
D.To give practical instruction for pruning a tree.
高二英语阅读理解简单题
Trees should only be pruned (修剪) when there is a good and clear reason for doing so and , 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 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 cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the center 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 (愈合). 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 important 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 to dry for a few hours and then paint it with one of the materials 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 (妨碍) 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 .
1..Why should pruning be done?
A.To make the tree grow taller. B.To improve the shape of the tree.
C.to get rid of the small ranches . D.To make the small branches thicker.
2..Trees become unhealthy if the gardener__________.
A. giving a tree a special shape and a definite height
B. removing small side branches and making a tree look less thick
C. allowing too many branches to grow in the middle
D. having a tree surrounded by many other trees
3..Why is a special material painted on the tree?
A.To help a wound to dry. B.to cover a rough surface.
C.To make a wound smooth. D.To prevent disease entering a wound.
4..A good gardener prunes a tree _________ .
A.several times throughout the year B.as quickly as possible
C.occasionally when necessary D.regularly every winter
5..What was the author’s purpose when writing this passage?
A.To discuss different methods of pruning.
B.To introduce some common knowledge of pruning.
C.To explain how trees develop disease.
D.To give practical instruction for pruning a tree.
高二英语阅读理解简单题查看答案及解析
Only when it is hungry ______ a human being.
A. a lion will attack B. a lion should attack
C. will a lion attack D. should a lion attack
高二英语单项填空中等难度题查看答案及解析
________ your dog with me should be a good choice. Trust me and I’ll look after it well.
A. When you left B. Leaving C. If you leave D. Leave
高二英语单项填空中等难度题查看答案及解析
________ your dog with me should be a good choice. Trust me and I’ll look after it well.
A. When you left B. Leaving C. If you leave D. Leave
高二英语单项填空中等难度题查看答案及解析
When people cut down big trees, new trees should be planted. ,they will have no trees to cut down in the future.
A.If not B.If so C.If no so D.If don’t
高二英语单项填空中等难度题查看答案及解析
A good friend should be kind and helpful. _________ is my mother.
A. A such friend B. One such friend
C. Any such friend D. Such one friend
高二英语单项填空中等难度题查看答案及解析
A good friend should be kind and helpful. _________ is my mother.
A. A such friend B. One such friend
C. Any such friend D. Such one friend
高二英语单项填空中等难度题查看答案及解析
The law has a great many rules, showing when and how far a man is to be punished, or if he should be made to hand over money or property to his neighbors, and so on. These rules are contained in books. A lawyer learns them mainly by reading books.
He begins by doing little else than reading, and after he has prepared himself by three years’ study, still, he has to, almost every day, read more about some new questions which he has to answer.
The power to use books, then, is a special skill which a would-be lawyer ought to possess. He ought to have enough flexibility(灵活性)to make it easy for him to collect ideas from printed words. He ought to have some readiness to find what a book contains, and something of an instinct(直觉)for where to look for what he wants.
But although this is the power which he will first feel in need of, it is not the most important. A lawyer does not study law to recite it; he studies it to use it and act upon the rules which he has learned in real life. His business is to try cases in court and to advise people what to do in order to keep out or get out of trouble.
1.The first thing a law student has to do is to _______.
A.read books B.hand over money
C.practice law D.answer questions
2.The major business of a lawyer is ________.
A.to discuss the material he has read
B.to advise people who have law problems
C.to learn about real life
D.to study the law
3.What is the most important to a lawyer?
A.To possess a lot of books.
B.To have enough flexibility when collecting ideas from printed words.
C.To be able to quickly find out what a book contains.
D.To be able to use his book knowledge in the right way in his future business.
4.According to the passage, a good lawyer should know how to ________.
A.understand and use what he reads
B.be effective in everything
C.collect ideas from different sources
D.be effective in court
高二英语阅读理解中等难度题查看答案及解析
Men and women should be treated equally according to the law, but ______ there is great room for improvement.
A.in reality B.above all C.after all D.in return
高二英语单项填空中等难度题查看答案及解析
Is it only when you fail _________ you will be aware of your mistakes?
A.that B.and C.or D.unless
高二英语单项填空中等难度题查看答案及解析