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(2019原创)The energy from the wind and the sun is very cheap and it will never________.
A.come out B.put out C.give out D.run out
九年级英语单选题中等难度题查看答案及解析
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The energy from the sun and wind is very cheap and it will never .
A. come out B. put out
C. carry out D. run out
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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The ________ from the sun and wind is very cheap and it will never run out.
A. energy B. noise C. heat D. light
九年级英语单选题简单题查看答案及解析
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The energy from the sun and wind is very cheap and it will never ________.
A.run out B.put out C.work out D.carry out
九年级英语单选题中等难度题查看答案及解析
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The energy from the sun and wind is very cheap and it will never ____________.
A. come out B. put out
C. carry out D. run out
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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The energy from the sun and wind is very cheap and it will never ____________.
A. come out B. put out C. carry out D. run out
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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These new types of energy from the sun, wind and water cost very little and will never ________.
A.run out B.wash out
C.wear out D.put out
九年级英语单选题中等难度题查看答案及解析
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These new types of energy from the sun, wind and water cost very little and will never ________.
A. run out B. wash out
C. wear out D. put out
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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先通读下面的短文，然后根据短文内容，在文章后表格的空格内填入一个最恰当的单词。所填单词必须写在答题卡对应题号的横线上。每个空格只能填一个单词。
People have been using the wind’s energy for a long, long time. More than 5, 000 years ago, ancient Egyptians made boats powered by the wind. In 200 B.C., people used windmills(风车) in China.
Today, we collect the wind’s energy with wind turbines(涡轮). A turbine is similar to a windmill; it is a very tall tower with two or three blades(叶片) at the top. These blades are turned by the wind. The blades turn a generator(发电机) located inside the tower, which creates power.
Groups of wind turbines are known as wind farms. Wind farms can be found near farmland, in narrow mountain passes, and even in the ocean, where there are stronger winds. Wind farms create power for nearby homes, schools and other buildings.
In places like the Midwest and along coasts, winds can provide cheap power. Another great advantage of wind power is that it is a clean form of energy. Wind turbines do not burn oil or coal and do not pollute the air.
Wind is not always an ideal source of energy, however. Wind speed changes from time to time, depending on the time of day, weather and location. Wind turbines can be also dangerous for bats and birds. These animals cannot always tell how fast the blades are moving and crash into them.
Title: 1. Energy
Ancient times
➢ People in Egypt made wind-powered boats 2. 5,000 years ago.
➢ People in China used windmills in 200 B.C.
Modern times
➢ It is 3. with turbines, which are tall windmill-like towers with two or three blades at the top and a generator inside.
➢ The wind turns the blades and the blades turn the generator to create power.
Advantages
➢ Winds produce power at a low 4. in certain areas.
➢ Wind turbines do not cause air pollution.
Disadvantages
➢ Wind speed does not remain at the same 5. all the time.
➢ Wind turbines can be dangerous for animals like bats and birds.
九年级英语信息归纳困难题查看答案及解析
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Have you ever seen a solar panel（太阳能电池板）in your neighborhood? Solar panels take energy from the sun and turn it into electricity. Over the past ten years, the price of solar panels has gone down greatly. In many parts of the world, solar energy is now the cheapest form of electricity. More and more people have started using solar energy to power（给……供电）their homes.
However, solar panels also have their problems. They stop working at night and on rainy days. Is it possible to make them produce electricity all of the time?
Scientists at Suzhou University, China, have invented a new solar panel now. It can produce electricity not only from solar energy but also from falling rain. When a raindrop falls on the solar panel and then rolls（滚动）down, it creates friction（摩擦力）on the surface of the panel, which can then be turned into electricity.
Sun Baoquan is one of the inventors. “Our new invention can produce electricity in any weather during the day,” he says. “It can even provide electricity at night if there is rain.”
The solar panel, however, does not make much electricity from falling rain. So Sun Baoquan is still working hard to improve it. The scientist also wants to make solar panels more flexible, which are as soft as clothing.
The field of solar energy is developing fast. Scientists around the world have been improving solar panels. Some have been working on ways to join solar panels and wind power together. Some have been trying to use sunlight to produce liquid and gas fuels（液体和气体燃料）.
1.Which energy is now the cheapest form of electricity in many parts of the world?
A.Solar energy. B.Water energy. C.Wind energy.
2.What is one of the problems of common solar panels?
A.The price of them is rising.
B.They can’t work all of the time.
C.They can hardly power people’s homes.
3.Why is the new solar panel more scientific and useful?
A.It has a larger size than a common one.
B.It produces more electricity from falling rain than solar energy.
C.It can produce electricity day and night and even in rainy conditions.
4.What does the underlined word “flexible” mean in Paragraph 5?
A.柔软的 B.光滑的 C.坚硬的
5.We can infer（推断）from this text that ________.
A.there is no room for developing solar energy
B.there is no end to the research in the field of solar energy
C.solar energy has completely taken the place of other kinds of energy
九年级英语阅读单选中等难度题查看答案及解析