Trees help stop the soil________ away by the rain.
A. washed B. be washed C. being washed D. washing
科目：高中英语 来源： 题型：阅读理解
Trees are useful to man in three very important ways: they provide him with wood and other products；they give him shade；and they help to prevent drought and floods.
Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.
Two thousand years ago, a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.
Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with, and he can earn money by making charcoal(木炭) or selling wood to the townsman（城市居民）. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.
This does not only mean that the villager’s sons and grandsons have fewer trees. The results are even more serious. For where there are trees their roots break the soil up—allowing the rain to sink in and also hold the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away with it the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but a worthless desert.
The purpose that the writer wrote this article is to _________.
A. tell people the use of wood
B. tell people the function of tree roots
C. warn that man mustn’t destroy forests any more
D. explain how trees help man live a better life.
In the writer’s opinion, _________, or the forests will slowly disappear.
A. measures must be taken
B. people shouldn’t draw benefit from the tree
C. government must realize the serious results
D. unless no trees are cut down.
According to the article we know it is ________ to prevent the forests from slowly disappearing.
A. necessary but impossible B. necessary but difficult
C. impossible and unimportant D. difficult and impossible
In the last two paragraphs the writer wanted to make it clear that _________.
A. where there are no trees, the soil becomes poor but soft
B. where there are many trees, there are more floods
C. where there are no trees, the land might become desert slowly
D. floods will make the land become desert
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科目：高中英语 来源： 题型：阅读理解
Trees are useful to man in three very important ways: they provide him with wood and other products, they give him shade, and they help to prevent drought and floods.
Unfortunately, in many parts of the world man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.
Two thousand years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.
Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with, and he can earn money by making charcoal(木炭) or selling wood to the townsman（城市居民）. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.
This does not only mean that the villager’s sons and grandsons have fewer trees. The results are even more serious. For where there are trees their roots break the soil up—allowing the rain to sink in and also hold the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away with it the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but a worthless desert.
The purpose that the writer wrote this article is to ______.
A. tell people the use of wood
B. tell people the function of tree roots
C. warn that man mustn’t destroy forests any more
D. explain how trees help to prevent drought and floods
In the writer’s opinion, _____, or the forests will slowly disappear.
A. measures must be taken
B. people shouldn’t draw benefit from the tree
C. government must realize the serious results
D. unless trees never be cut down
According to the article we know it is _____ to prevent the forests from slowly disappearing.
A. necessary but impossible
B. necessary but difficult
C. impossible and unimportant
D. difficult and impossible
In the last two paragraphs the writer wanted to make it clear that _____ .
A. where there are no trees, the soil becomes poor but soft
B. where there are many trees, there are more floods
C. where there are no trees, the land might become desert slowly
D. floods will make the land become desert
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科目：高中英语 来源：2011-2012学年湖南省望城一中高二上学期期中考试英语试卷 题型：阅读理解
DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure. Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
【小题1】 From the passage, we can know that a boy looks like his parents because______.
| A．he is son of his parents. |
| B．his parents’ DNA decides his appearance. |
| C．he has received DNA from his father or his mother. |
| D．scientists have put some of his parents’ DNA into him. |
| A．let … go free | B．get rid of |
| C．absorb | D．survive |
| A．The DNA Research in Japan |
| B．A New Way of DNA Research in Japan. |
| C．The Causes and Effects of DNA Research |
| D．The Advantages And Disadvantages of RDNA |
| A．the research has been stopped because the created animals carry viruses |
| B．“super-trees” might be widely planted around the world |
| C．scientists have not completely understood DNA |
| D．RDNA research will benefit human beings a lot |
You might find this passage in / on a ________. A．fashion magazine B．novel C．scientific newspaper D．sports newspaper
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科目：高中英语 来源：2011-2012年湖南省高二上学期期中考试英语试题 题型：阅读理解
DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure. Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
1. From the passage, we can know that a boy looks like his parents because______.
A. he is son of his parents.
B. his parents’ DNA decides his appearance.
C. he has received DNA from his father or his mother.
D. scientists have put some of his parents’ DNA into him.
2.What does the underlined expression “let loose” probably mean?
A. let … go free B. get rid of
C. absorb D. survive
3. What is the best title for the passage?
A. The DNA Research in Japan
B. A New Way of DNA Research in Japan.
C. The Causes and Effects of DNA Research
D. The Advantages And Disadvantages of RDNA
4. The following statements are true about RDNA research EXCEPT ______.
A. the research has been stopped because the created animals carry viruses
B. “super-trees” might be widely planted around the world
C. scientists have not completely understood DNA
D. RDNA research will benefit human beings a lot
5.You might
find this passage in / on a ________.
A. fashion magazine B. novel C.
scientific newspaper D. sports newspaper
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科目：高中英语 来源：2010年浙江省高一上学期期中考试英语卷 题型：阅读理解
Trees are useful to man in three very important ways: they provide him with wood and other products；they give him shade；and they help to prevent drought and floods.
Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.
Two thousand years ago, a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.
Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with, and he can earn money by making charcoal(木炭) or selling wood to the townsman（城市居民）. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.
This does not only mean that the villager’s sons and grandsons have fewer trees. The results are even more serious. For where there are trees their roots break the soil up—allowing the rain to sink in and also hold the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away with it the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but a worthless desert.
1.The purpose that the writer wrote this article is to _________.
A. tell people the use of wood
B. tell people the function of tree roots
C. warn that man mustn’t destroy forests any more
D. explain how trees help man live a better life.
2. In the writer’s opinion, _________, or the forests will slowly disappear.
A. measures must be taken
B. people shouldn’t draw benefit from the tree
C. government must realize the serious results
D. unless no trees are cut down.
3.According to the article we know it is ________ to prevent the forests from slowly disappearing.
A. necessary but impossible B. necessary but difficult
C. impossible and unimportant D. difficult and impossible
4.In the last two paragraphs the writer wanted to make it clear that _________.
A. where there are no trees, the soil becomes poor but soft
B. where there are many trees, there are more floods
C. where there are no trees, the land might become desert slowly
D. floods will make the land become desert
查看答案和解析>>
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