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题型:阅读理解-阅读单选 难度:0.85 引用次数:138 题号:17885257

Three Types of Renewable Energy Sources


Water Power

Water power is the world’s biggest source of renewable energy by far, with China, Brazil, Canada, the U. S. , and Russia the leading water power producers. While water power is a clean energy source provided by rain and snow, it also has several drawbacks.

Large dams can damage river ecosystems and surrounding communities, harming wildlife and displacing residents. Even water power at full capacity bears its own emissions problems, as rotting organic material in reservoirs releases methane (甲烷,沼气).

Dams aren’t the only way to use water for power. Tidal and wave energy projects around the world aim to capture the ocean’s natural rhythms. The potential marine energy is great.


Wind Power

Wind turbines (涡轮) are growing around the globe, and China, the U. S., and Germany are the leading wind energy producers.

Some people may object to how wind turbines look on the horizon (地平线) and to how they sound, but wind energy, whose prices are declining, is proving too valuable a resource to deny. Another problem with wind turbines is that they’re a danger for birds and bats, killing hundreds of thousands annually that engineers are working on solutions to make them safer for flying wildlife.


Solar Power

From home rooftops to farms, solar power is reshaping energy markets around the world.

In addition to solar panels, which change the sun’s light to electricity, concentrating solar power (CSP) plants use mirrors to concentrate the sun’s heat, getting thermal energy. Solar thermal energy is also being used worldwide for hot water, heating, and cooling. China, Japan, and the U. S. are leading the solar transformation, but solar still has a long way to go.

1. Which country is the leading producer of all the three renewable energies?
A.China.B.Japan.C.Germany.D.Russia.
2. What may reduce the disadvantages of water power?
A.Gathering organic material in reservoirs.
B.Employing alternative water sources.
C.Moving residents away from dams
D.Using water power at full capacity.
3. What is a problem with the wind turbines?
A.They cost too much.
B.They occupy much space.
C.They cause noise pollution.
D.They affect flying wildlife’s health.
【知识点】 科学技术 说明文

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【推荐1】New technology rules the whole world now. But I still remember when I was a child, I did not have a cell phone or a computer because it was not necessary at all in those days. The Internet was not popular and the touch screen technology was unknown.

At this time here in the US smartphones are really a need, especially for young and business people. There are many applications (应用软件) really useful like maps, dictionaries, e-mails and games.

For me, I use my smartphone to check the weather and to look for something on the Internet and of course to keep communicating through calls and texts. Besides, I like music applications, GPS and Facebook.

Many tests have discovered that cell phones cause damage to us because they send out radioactive (具有放射性的) waves to our bodies and this could cause cancer.

Psychologists say that these devices can affect behavior and I believe everyone knows it is harmful to the eyes if we are sitting for a long time in front of the computer. However, it seems to be difficult for us to give up, even if we know how bad it is for our health. The use of technology becomes more and more important in our lives.

I think the use of technology has brought us unimaginable things. If we use technology correctly, I am sure it would be possible to decrease the damage to our bodies.

Keep in mind that it is important not to focus only on technology, but to spend time with our families and people close to us.

1. What can we know from the passage?
A.The author is a businessman working for a cell phone company.
B.The author has suffered a lot from the use of electrical devices.
C.The author knows little about the functions of modern cell phones.
D.The author is quite pleased with the various functions of cell phones.
2. Which of the following does the author agree with?
A.It’s not necessary to add more applications to cell phones.
B.Cell phones have made our world a boring place to live in.
C.New technology has done people more harm than good.
D.New technology makes people separated from each other.
3. What does the underlined word “decrease” in Paragraph 6 mean?
A.Keep.B.Cause.
C.Reduce.D.Add.
4. What does the author mainly discuss in the passage?
A.The importance of the Internet.B.The applications of cell phones.
C.The role of new technology in our lives.D.The health problems brought by cell phones.
2019-06-24更新 | 73次组卷
阅读理解-阅读单选(约300词) | 较易 (0.85)
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文章大意:本文是一篇说明文。主要讲述了“沙发土豆”这个概念,以及人们随着科技的发展变成了“沙发土豆”,从而逐渐的缺乏锻炼,影响身体健康的现象。

【推荐2】According to the Oxford English Dictionary, the term “couch potato” first appeared in print in a December, 1979 edition of the Los Angeles Times. Since then, has become a familiar term for a person who spends a lot of time sitting, and little time exercising. Although there does not seem to be any particular reason why the term “couch potato” is used rather than “couch tomato” , a person may become a “couch potato” because living this way is said to make you round like a potato. The term is also said to have something to do with the high-calorie (卡路里) food like potato chips.

People now would say “couch potato” whenever they talk about overweight and obesity (肥胖). Indeed, “couch potatoes” are believed to have heart disease risks, which can be avoided by regular exercise.

It is true that technology and modern life in general make us sick, fat, lazy and physically/mentally soft. The more time people spend using technology, particularly televisions and computers, the less time they will spend being physically active.

“Couch potato” kids are a particular concern. Media reports repeatedly claim that children today are fatter than their elder generations, but less athletically skilled, less interested in physical activities and more addicted (上瘾的) to “junk food” and technology such as televisions and computers. The message is clear: today’s children are fat because they are lazy and eat too much. Moreover, because technology is becoming more sophisticated (复杂的), children are less able to resist (抵抗,忍得住) technology’s attraction, and are more likely to spend more time using technology, less time doing physical activities and,therefore, more likely to be fat.

1. The first paragraph is mainly about ________.
A.why “couch potato” is used as a term for a person
B.when “couch potato” is used as a term for a person
C.how “couch potato” is different from “couch tomato”
D.what kind of person looks like a potato
2. The development of technology also makes us sick because ________ by using technology.
A.we are more likely to have heart disease risks in modern life
B.we spend less time doing exercise
C.we needn’t do many things by ourselves any more
D.we spend all our time watching TV and playing computer games
3. It’s kids’ ________ that people are particularly concerned about.
A.foodB.study
C.healthD.hobby
4. According to the passage,the author may suggest that ________.
A.scientists should stop their technology research
B.parents should take better care of their children
C.kids should be stopped from using new technology
D.people should spend less time using technology
2022-10-17更新 | 193次组卷
阅读理解-阅读单选(约320词) | 较易 (0.85)
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【推荐3】George is in his bedroom. He is playing on his computer again! George plays on his computer every day. But George feels sad. He plays on his computer because he doesn't have any friends. Sometimes he dreams he is playing football with lots of friends, but it never happens.

Today George is playing a computer football game. He is playing against the computer and he is winning. Suddenly the computer speaks to George.

"Hello, George! What game can we play now?"

George is surprised and jumps up from his chair. He can't believe it. Maybe he is dreaming.

George looks at the computer with big eyes. "You can speak!"

"Yes. I can do many amazing things!" Two arms shoot out of the sides of the computer. And then two legs. Suddenly the computer is walking!

"Let's go for a walk to find a friend," says the computer. The computer runs along the road. It goes into the library, where there are lots of computers. There is a boy, Tommy, sitting there, doing his homework.

Tommy looks at the crazy computer.

"What's this?" he cries. "A computer with arms and legs?" George's computer is in the middle of the room. It's getting bigger and bigger.

It is out of control. The lights in the library are flashing on and off. People are running out of the library.

"Quick!" says George. He grabs a stick and hits his computer. There is a loud bang and it explodes into the air and falls to the ground into small pieces.

"He's gone," says Tommy.

Tommy and George leave the library together. Tommy lives in the next street to George. "That's my house," says Tommy. "Do you want to play football in the garden?"

"Yes," says George, smiling. "Who needs computers?"

1. When George and the computer entered the library, what was Tommy doing?
A.He was chatting with a net friend.
B.He was doing his homework.
C.He was playing football on a computer.
D.He was repairing a computer.
2. What does the underlined word "it" refer to?
A.The libraryB.The stick
C.Tommy's homeworkD.George's computer
3. The passage may be a(n) _______.
A.ad for a supercomputerB.football match report
C.science storyD.diary
4. The passage implies that _____.
A.computers make people communicates with each other.
B.children prefer playing football on the computer.
C.online games replace some traditional ways of playing
D.computers will drive people mad in the future.
2020-05-22更新 | 51次组卷
共计 平均难度:一般