-
C
Indian scientists have designed a new device* that they hope will solve one of the biggest problems with the use of solar energy. They call the device a solar tree. Solar trees have metal “branches*” which are just from a tall pole at different levels. Each branch holds a solar panel*. These panels have large metal boards that collect energy from the sun and turn it into electricity.
Daljit Singh Bedi is the main scientist at the Council of Scientific and Industrial Research in India. Bedi says the shape of the solar trees makes it possible to fit more solar panels in a space than traditional systems do. This means less land would be needed to produce solar energy. “It takes about four square meters of space to produce energy which may need 400 square meters of space,” he says.
Scientists believe the energy a solar tree collects will be enough to power five homes. The solar tree will make it easier to provide solar energy for homes in cities. The trees will also take less space from farmers in rural areas. Bedi says solar trees will collect more energy than normal solar panels on the tops of buildings. “This design makes the solar panels exposed* more towards the sun,” he says. “And that way people are able to use 10 to 15 percent more energy.”
India has promised to reduce its greenhouse gas production. The country’s promise depends heavily on increasing solar energy. The cost of solar panels has gone down in recent years. This has increased the possibility of applying*solar trees in India.
Amit Kumar is the senior director of the Energy and Resources Institute in New Delhi. He says gaining access* to land takes time and increases costs. He adds that it is still not clear how useful these new developments in solar power technology are. “Only when we put those trees on a large scale* will we be able to get that answer,” he says.
1.We may probably read this passage in ___________.
A. Culture Views B. Nature and Science
C. Story Books D. Travelling Guide Book
2.Compared the traditional system, the main advantages of the solar tree is _____________.
A. we can see many “branches” in new solar tree
B. it surely produces more energy than traditional system
C. it’s reducing India’s more greenhouse gas production now
D. fewer and fewer people will use it than traditional ones
3.What does the underlined word "this" in the fourth paragraph refer to (指代)？
A. greenhouse gas production B. the solar panels
C. the new solar tree D. country’s promise
4.In the last paragraph, what do you think of what Amit Kumar said?
______________________________________________________________________________
九年级英语阅读理解困难题查看答案及解析
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根据短文内容，判断下列句子正误。正确的用“A”表示，不正确的用“B”表示。
Indian scientists have designed a new device (设备) that
they hope will solve one of the biggest problems with the use
of solar energy. They call the device a solar tree. Solar trees
have metal “branches” (分枝). Each branch holds a solar panel (太阳能电池板). These panels have flat surfaces that collect energy from the sun and turn it into electricity.
Daljit Singh Bedi is the chief (首席的) scientist at the Council of Scientific and Industrial Research in India. Bedi says the shape of the solar trees makes it possible to fit more solar panels in a space than traditional systems do. This means less land would be needed to produce solar energy. “It takes about four square meters of space to produce energy. However, 400 square meters of space would be required in the past to produce the same energy,” he says.
Scientists believe the energy that a solar tree collects will be enough to power five homes. The solar tree will make it easier to provide solar energy for homes in cities. The trees will also take less space from farmers in the countryside. And that way people are able to use 10 to 15 percent more energy.
Amit Kumar is a senior engineer of the Energy and Resources Institute in New Delhi. He says that it is still not clear how useful these new developments in solar power technology are. “Only when we put those trees on a large scale (规模) will we be able to get that answer,” he says.
1.Indian scientists have solved a big problem with the use of solar energy.
2.Solar trees can save land and produce more energy.
3.Not every scientist agrees that solar trees are useful at present.
4.Solar trees are widely used in India.
5.The passage mainly introduces how to use solar energy.
九年级英语阅读理解极难题查看答案及解析
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Scientists are trying to find new clean energies, so that they do not pollute the environment. Solar power(太阳能)is one of them.
Solar power is a kind of electricity.It takes energy from the sun by using solar panels(太阳能金属板).People usually put the solar panels on the roofs of the houses and buildings.It is the family solar power system. Some countries are even beginning to build solar power factories by setting thousands of solar panels in some place, because there is enough sunshine. Solar power panels have many advantages. The power is easy to get and will never be used up. Whenever it is sunny, there is power. The power is clean and renewable. It helps to reduce waste and pollution.It is also great for the environment. In some places,because they are too far away to send electricity or not easy to build electric power factories, solar power is especially necessary.
More and more countries,such as China, the USA,Japan and India, encourage scientists to develop technology to put solar power into use. However, the power is not as widely used as expected（预期的）.
One of the difficulties is that a solar power system needs sunshine. Some countries having lots of rain, like the UK, are not suitable to develop such power systems. Secondly,a solar power factory requires a very large place to set enough solar panels to collect sunlight and change it into electricity. Maybe an area in the desert would be one of the perfect places for such a factory to build. What’s more, solar panels are expensive at present though the energy itself doesn’t cost anything.
Today scientists are working hard to develop cheaper solar power systems. Maybe one day solar power will be one of the most important clean energies in our life.
根据短文内容，选择正确答案。
1.Solar power is a kind of energy taken from .
A.the air B.the sun C.the water D.the ground
2.Where is this passage probably from?
A.A poster B.A magazine C.A letter D.A cookbook
3.What is the fourth paragraph of the passage mainly about?
A.The ways to use solar power
B.The advantages of solar power
C.The places to build the solar power plants
D.The difficulties of putting solar power into use widely
4.Which of the following sentences is NOT right?
A.Solar power is a kind of electricity
B.The solar power is suitable for every country
C.Solar panels are expensive at present
D.Scientists are working hard to develop the solar power systems
5.What can we learn from the passage?
A.Solar energy itself is expensive
B.Solar power will be used up very soon
C.Solar power is a kind of clean and useful energy
D.Solar power is much better than the other energies
九年级英语阅读单选中等难度题查看答案及解析
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Scientists in Britain and the United States have made a new kind of enzyme(酵素) that eats plastics(塑 料). With its help, plastics can be turned into smaller parts and go away quickly. Scientists believe that, in the future, it could solve the problem of plastic pollution.
The enzyme is able to break down PET, a form of plastic. PET was first made in the 1940s and is now widely used to make plastic bottles. It can remain in the environment for many years and pollute large areas of land and water. So it has always been a headache to deal with the waste from PET and other plastics.
The researchers made the discovery(发 现) while examining the structure of a natural enzyme in Japan. They found that the natural enzyme was helping to break down PET plastics. So, they decided to make small changes to the enzyme by adding some amino acids(氨 基 酸). It made the natural enzyme’s plastic-eating abilities work faster and better.
John McGeehan, one of the lead researchers, said, “We’ve made an improved enzyme. It’s better than the natural one. And we are trying to make more improvements to it.” He went on, “The enzyme is not harmful to humans or animals, and it is friendly to the environment. So we are considering putting it into wider use.”
The team is now trying to make the enzyme break down PET in large quantities(大量
). “We’ll see that the plastic pollution may be stopped with this technology. However, there is still a long way to go,” John McGeehan added.1.Which is not true about the advantage of enzyme?
A.It’s able to make plastics become smaller parts.
B.It can solve the problem of the plastic pollution right now.
C.It’s used to make the plastics disappear in a rapid way.
2.The underlined phrase “break down” in the passage probably means “________” in Chinese.
A.实验 B.生产 C.分解
3.Which isn't the change they made to the natural enzyme?
A.Some amino acids were put in it.
B.The speed of plastic-eating has been improved.
C.The quality of plastic -eating remained the same.
4.Which of the following is TRUE according to the passage?
A.The scientists are still trying to improve the enzyme.
B.The enzyme will pollute large areas of land and water.
C.The natural enzyme woks better than the improved one.
5.We can’t infer from the study that________.
A.The team is able to increase the speed of the plastic -eating abilities
B.Efforts are made to increase the number of PET that the enzyme breaks down
C.Few efforts are required to the improvement of this new enzyme
九年级英语阅读单选困难题查看答案及解析
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Scientists in Britain and the United States have made a new kind of enzyme(酵素) that eats plastics(塑 料). With its help, plastics can be turned into smaller parts and go away quickly. Scientists believe that, in the future, it could solve the problem of plastic pollution.
The enzyme is able to break down PET, a form of plastic. PET was first made in the 1940s and is now widely used to make plastic bottles. It can remain in the environment for many years and pollute large areas of land and water. So it has always been a headache to deal with the waste from PET and other plastics.
The researchers made the discovery(发 现) while examining the structure of a natural enzyme in Japan. They found that the natural enzyme was helping to break down PET plastics. So, they decided to make small changes to the enzyme by adding some amino acids(氨 基 酸). It made the natural enzyme’s plastic-eating abilities work faster and better.
John McGeehan, one of the lead researchers, said, “We’ve made an improved enzyme. It’s better than the naturl one. And we are trying to make more improvements to it.” He went on, “The enzyme is not harmful to humans or animals,and it is friendly to the environment. So we are considering putting it into wider use.”
The team is now trying to make the enzyme break down PET in large quantities(大量的). “We’ll see that the plastic pollution may be stopped with this technology. However,there is still a long way to go,”John McGeehan added.
1.According to the scientists, the enzyme may solve the poblem of pollution.
A. air B. water C. light D. plastic
2.The underlined phrase “break down” in the passage probably means “ ” in Chinese.
A. 实验 B. 生产 C. 发明 D. 分解
3.Researchers discovered that a natural enzyme helped eat plastics .
A. in B. in the US C. in Japan D. in China
4.Which of the following is TRUE according to the passage?
A. The scientists are sill trying to improve the enzyme.
B. The enzyme will pollute large areas of land and water.
C. The natural enzyme woks better than the improved one.
D. The natural enzyme is harmful to humans and animals.
九年级英语阅读单选中等难度题查看答案及解析
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Scientists in Britain and the United States have made a new kind of enzyme(酵素) that eats plastics(塑 料). With its help, plastics can be turned into smaller parts and go away quickly. Scientists believe that, in the future, it could solve the problem of plastic pollution.
The enzyme is able to break down PET, a form of plastic. PET was first made in the 1940s and is now widely used to make plastic bottles. It can remain in the environment for many years and pollute large areas of land and water. So it has always been a headache to deal with the waste from PET and other plastics.
The researchers made the discovery(发 现) while examining the structure of a natural enzyme in Japan. They found that the natural enzyme was helping to break down PET plastics. So, they decided to make small changes to the enzyme by adding some amino acids(氨 基 酸). It made the natural enzyme’s plastic-eating abilities work faster and better.
John McGeehan, one of the lead researchers, said, “We’ve made an improved enzyme. It’s better than the naturl one. And we are trying to make more improvements to it.” He went on, “The enzyme is not harmful to humans or animals,and it is friendly to the environment. So we are considering putting it into wider use.”
The team is now trying to make the enzyme break down PET in large quantities(大量的). “We’ll see that the plastic pollution may be stopped with this technology. However,there is still a long way to go,”John McGeehan added.
1.According to the scientists, the enzyme may solve the poblem of pollution.
A. air B. water C. light D. plastic
2.The underlined phrase “break down” in the passage probably means “ ” in Chinese.
A. 实验 B. 生产 C. 发明 D. 分解
3.Researchers discovered that a natural enzyme helped eat plastics .
A. in B. in the US C. in Japan D. in China
4.Which of the following is TRUE according to the passage?
A. The scientists are sill trying to improve the enzyme.
B. The enzyme will pollute large areas of land and water.
C. The natural enzyme woks better than the improved one.
D. The natural enzyme is harmful to humans and animals.
九年级英语阅读单选中等难度题查看答案及解析
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—It is said that the scientists have found new ways to deal with AIDS.
—________wonderful news it is!
A．How B．What an C．How a D．What
九年级英语单项填空中等难度题查看答案及解析
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Scientists have learned a lot about the kinds of food people need. They said that there are several kinds of food that people should eat every day.
★Wheat, corn or rice ★Green and yellow vegetables
★Meat, fish and eggs ★Fruit like apples, pears and so on
★Milk and butter ★All kinds of nuts
People in different countries and different places of the world eat different kinds of things. Food is cooked and eaten in many different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day. In other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether food is eaten raw or cooked, cool or hot. It doesn’t matter if a person has dinner at four o’clock in the afternoon or at eleven o’clock at night. The important thing is what you eat every day.
There are two problem in feeding the large number of people on the earth. The first is to find some ways to feed the world’s population so that no one in hungry. The second is to make sure that people everywhere have the right kinds of food to get them to be strong and healthy.
1.According to scientists, which of the following groups of food is the healthiest of your lunch?
A. beef, pork, fish, milk.
B. oranges, bananas, fish, tomatoes
C. chicken, apples, rice, cabbages
2.What’s the meaning of underlined word “raw” in the passage?
A.罐装的 B.生的 C. 冷冻的
3.It is important for people to eat .
A. three times a day
B .something for lunch at 12 o’clock
C. different kinds of food every day.
4.Which of the following is True?
A. Scientists are helping people be strong and healthy
B. Cooked food is much better than raw one.
C. None of the people in the world is hungry.
九年级英语阅读理解困难题查看答案及解析
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Paragraph 1
Scientists have learned a lot about the kinds of people need. They say that there are several kinds of food that people should eat every day, they are: (1) green and yellow vegetables of all kinds; (2) citrus (柑桔) fruits and tomatoes; (3) potatoes and other fruits and vegetables; 94) meat of all kinds, fish and eggs; (5) milk and foods made from milk; (6) bread or cereal (谷类), rice is also in this kind of food; (7) butter, or something like butter.
Paragraph 2
People in different countries and different places of the world eat different kinds of things. Foods are cooked and eaten in many different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day; in other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether foods are eaten raw or cooked, canned (罐装的) or frozen (冷冻的). It doesn’t matter if a person eats dinner at 4 o’clock in the afternoon or at eleven o’clock at night. The important thing is what you eat every day.
Paragraph 3
There are two problems, then, in feeding the large number of people on the earth. The first is to find some way to feed the world’s population so that no one is hungry. The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.
1.According to(依据)the scientists，which of the following groups of food is the healthiest for your lunch？
A. Chicken, apples, cereal and cabbages.
B. Potatoes, carrots, rice and bread.
C. Oranges, bananas, fish and tomatoes.
D. Beef, pork, fish and milk,
2.It is important for people to eat ______.
A. three times a day
B. dinner at twelve o'clock
C. cooked food all the time
D. something from each of the seven kinds of food every day
3.People in different countries and different places of the world ____ .
A. have the right kinds of food to eat
B. cook their food in the same way
C. have their meals at the same time
D. eat food in different ways
4.Which of the following is not true？
A. People in some places don't have enough to eat.
B. There are too many people in the world.
C. One of the problems is that no one is hungry.
D. The scientists are trying to make people grow to be strong and healthy.
5.If there is Paragraph (段落) 4, what do you think is going to be talked about？
A. When people eat their lunch.
B. What to do with the two problems.
C. How to cook food in different ways.
D. Why people eat different kinds of food.
九年级英语阅读理解中等难度题查看答案及解析
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Scientists have learned a lot about the kinds of food people need. They say that there are several kinds of food that people should eat every day. They are (1) green and yellow vegetables of all kinds; (2) citrus (柑橘) fruit and tomatoes; (3) potatoes and other fruit and vegetables; (4) meat of all kinds, fish and eggs; (5) milk and food made from milk; (6) bread or cereal, rice is also in this kind of food; (7) butter, or something like butter.
People in different countries and different places of the world eat different kinds of things. Food are cooked and eaten in different kinds of ways. People in different countries eat at different times of the day. In some places people eat once or twice a day, in other countries people eat three or four times a day. Scientists say that none of the differences is really important. It doesn’t matter whether foods are eaten raw (生的) or cooked, canned or frozen. It doesn’t matter if a person eats dinner at 4’clock in the afternoon or at 11 o’clock at night. The important thing is what you eat every day.
There are two problems in feeding the large number of people on the earth. The first is to find some ways to feed the world’s population so that no one is hungry. The second is to make sure that people everywhere have the right kinds of food to make them grow to be strong and healthy.
1.According to the scientists, which of the following groups of food is the healthiest for your meals?
A.Chicken, apples, cereal and cabbages. B.Beef, pork, fish and milk.
C.Oranges, bananas, fish and tomatoes. D.Potatoes, carrots rice and bread.
2.It is important for people to eat ______.
A.three times a day B.dinner at twelve o’clock
C.cooked food all the time D.something from each of the seven kinds of food every day
3.People in different countries and different places of the world ______.
A.eat food in different ways B.cook their food in the same way
C.have their meals at the same time D.have the right kinds of food to eat
4.Which of the following is NOT true?
A.There are too many people in the world.
B.People in some places don’t have enough to eat.
C.One of the problems is that no one is hungry.
D.The scientists are trying to make people grow to be strong and healthy.
5.If there is Paragraph 4, what do you think is going to be talked about?
A.When people eat their lunch. B.What to do with the two problems.
C.How to cook food in different ways. D.Why people eat different kinds of food.
九年级英语阅读单选中等难度题查看答案及解析
). “We’ll see that the plastic pollution may be stopped with this technology. However, there is still a long way to go,” John McGeehan added.