This problem is said _____ three times.  
[     ]
A. to have been talked      
B. to have discussed  
C. having been discussed    
D. to have been talked about
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：閱讀理解

"Reduce, reuse and recycle, this familiar environmentalist slogan tells us how to reduce the amount of rubbish that ends up in landfills and waterways.

The concept is being used to deal with one possibly dangerous form of waste – electronic junk (電子垃圾), such as old computers, cell-phones, and televisions. But this process for managing e-waste may be used in an unscrupulous way more often than not used, a recent report suggests.

“A lot of these materials are being sent to developing nations under the excuse of reuse – to bridge the digital divide,” said Richard Gutierrez, a policy researcher.

One of the problems is that no one proves whether these old machines work before they hit the seaways. Because of this, the report says, e-waste is a growing problem in Lagos, Nigeria, and elsewhere in the developing world. Much of the waste ends up being thrown away along rivers and roads. Often it’s picked apart by poor people, who may face dangerous exposure to poisonous chemicals in the equipment.

Businessmen also pay workers a little money to get back materials such as gold and copper. This low-tech recovery process could expose workers and the local environment to many dangerous materials used to build electronics. According to Gutierrez, this shadow economy exists because the excuse of recycling and reusing electronics gives businessmen “a green passport” to ship waste around the globe. “Developing nations must take upon some of the responsibility themselves,” Gutierrez said. But, he added, “A greater portion of this responsibility should fall on the exporting state.”

China, for example, has become a dumping place for large amounts of e-waste. The nation is beginning to take action to stop the flow of dangerous materials across its borders. The Chinese government, after many years of denial, is finally beginning to take the lead.

The underlined word “unscrupulous” in Paragraph 1 probably means ________.

       A. unsafe               B. tricky                C. wrong                      D. immoral

What does the fourth paragraph mainly discuss?

       A. Old computers and TVs still work before they are sent abroad.

       B. Poor people break up e-waste to collect some valuable materials.

       C. A lot of e-waste is dumped in developing countries.

       D. The problem of e-waste is growing in developing countries.

From what Gutierrez said we can learn that ________.

       A. exporting countries should mainly be responsible for this problem.

       B. neither rich nor poor countries should be blamed for this problem

       C. developing countries should be responsible for this problem

       D. poor countries should blamed for this problem

It can be inferred from the last paragraph that _______.

       A. China has hidden a large amount of e-waste in many secret places

       B. China has greatly changed hre idea about the problem of e-waste

       C. China has prevented poisonous materials from entering China for a long time

       D. China is falling behind other countries in dealing with e-wast

The passage mainly tells us that _______.

       A. developing countries are facing serious environmental problems

       B. e-waste is a growing problem in developed countries

       C. e-waste is sent to developing countries under the excuse of reuse

       D. developing countries are making full use of e-waste

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

Our surroundings are being polluted faster than nature and man’s present efforts cannot prevent it. Time is bringing us more people, and more people will bring us more industry, more cars, larger cities, and the growing use of man-made materials.

    What can explain and solve this problem? The fact is that pollution is caused by man, by his desire for a modern way of life. We make “increasing industrialization”(工業(yè)化)our chief aim. So we are often ready to offer everything: clean air, pure water, good food, our health and the future of our children. There is a constant flow of people from the countryside into the cities, eager for the benefits of our modem society. But as our technological achievements have grown in the last twenty years, pollution has become a serious problem.

Isn’t it time we stopped to ask ourselves where we are going and why? It makes one think of the story about the airline pilot (飛行員) who told his passengers over the loudspeaker, “I’ve some good news and some bad news. The good news is that we’re making rapid progress at 530 miles per hour. The bad news is that we’re lost and don’t know where we’re going.” The sad fact is that this becomes a true story when spoken of our modern society.

Man cannot prevent the world from being polluted because___________.

A. the population of the world is increasing fast   

B. people use too many man-made materials

C. our technological achievements have grown in the last twenty years

D. we are producing more cars, trucks and buses

People crowd into the cities for___________.

A. they want very much to find well-paid jobs

B. they are anxious to enjoy the achievements of our society

C. they have become tired of their homeland

D. they have a strong wish to become industrial workers

The story about the airline pilot tells us that___________.

A. man knows where the society is going

B. people do not welcome the rapid development of modern society

C. man can do little about the problem of pollution

D. the speaker is worried about the future of our society

What does the  writer really want to say in this passage?

A. With tile development of technology pollution has become a serious problem.

B. Lower the speed of development to stop pollution.

C. It’s time we did something to reduce pollution.

D. As industry is growing fast, pollution is the natural result.

查看答案和解析>>

科目：高中英語 來源：2013屆海南省高二下學(xué)期期末考試英語試卷（解析版） 題型：短文改錯(cuò)

假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處語言錯(cuò)誤。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。

增加：在缺詞處加一個(gè)漏字符號(∧)，并在其下面寫出該加的詞。

刪除：把多余的詞用斜線(\)劃掉。

修改：在錯(cuò)的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1.每處錯(cuò)誤及其修改均僅限一詞；

2．只允許修改10處，多者(從第11處起)不計(jì)分。

Dear Sir，

How are you? As a exchange student，I am writing to tell you I would prefer to move into a single room in next term，

as I find that inconvenient to share a room with others. My roommate often held parties at night, made much noise.

Besides, his friends are always visiting him, that disturb me a lot. So I hope to draw your attentions to this problem. If

you think in my position，I am sure he will agree that the only solution for me is get a room of my own，one not in the

same building but as near to the school campus as possible. I would be gratefully if you could do me the favor.

Best wishes.

Yours sincerely，

Li Ming

 

查看答案和解析>>

科目：高中英語 來源：廣東省廣州市2009-2010學(xué)年度高一級第二學(xué)期期中考試英語科試題 題型：單詞拼寫

單詞拼寫（共10小題，每小題1分，滿分10分）

A.根據(jù)首字母寫出正確的單詞形式。

1. As the rocket rose into the air, we were pushed back into our seats because we were trying to e________ the pull of the earth’ gravity.

2. It is better for patients to live in an a________ of peace and calm in the

countryside.

3. Cigarette smoking m________ the risk of cancer.

4. She didn’t mean to hurt you. On the c_____, she was very kind.

B.根據(jù)中文和首字母提示寫出正確的單詞形式.

5. His illness a________ (解釋) for his absence. That’s why he hasn’t turned up now.

6. The latest information c________ (使…堅(jiān)信) him in the belief that we will surely win.

7. A knowledge of economics is f________（基本的）to any understanding of this problem.

C.用括號內(nèi)的單詞的正確形式填空:

8. He has made ________ (persist) efforts to realize his dream.

9. It is said that they have got the first place in the competition but they will be ________ (official) informed next Monday.

10. His work is ________ (impress) and we all admire him very much.

 

查看答案和解析>>

科目：高中英語 來源：2010年貴州省高一上學(xué)期期中考試英語卷 題型：閱讀理解

ScienceDaily (May 28, 2010) --- Researchers at Oregon State University (OSU) have made important progress in work that should lead toward robots that can not only walk and run very well, but use little energy at the same time.

Studies are moving closer to designing robots that could do dangerous work, create prosthetic limbs（假肢）for humans that work much better than in the past, or even help some people who use wheelchairs to get “walking” abilities.

“Researchers have been working toward robot movement for a long time,” said Jonathan Hurst, a professor at OSU. “What we’ve done is to study what behavior is really possible for a robot.”

The movement of humans and other animals is difficult to copy. Using little energy, they can move easily over hard areas, and enjoy balance from muscles（肌肉）. They have different ways to deal with forces, such as holding something hard in place rigidly（牢牢地）, like the act of holding a cup of coffee level during a car ride. In their recent studies, the OSU researchers proved that these two abilities are mutually exclusive（相互排斥的）. Humans deal with this problem by using pairs of muscles. For a robot, the more it’s able to do one of these tasks, the less able it is to do the other.

Presently, robots that can walk and run must be as rigid as possible while walking. But this way uses a lot of energy. The OSU researchers are working toward something that has similar or better performance, but uses far less energy, and is closer to the abilities of animals.

“So there’s no reason why we shouldn’t be able to build robots with good movement ability,” Hurst said. “Clearly this might be useful in highly dangerous situations. But I could also see great improvements possible with prosthetic limbs that work much better than present technology. ”

72. 1.The robots being studied by researchers at OSU ______.

A. are successful now

B. use little energy

C. do better than before

D. can run faster than humans

73. 2.Which of the following have researchers been studying all the time?

A. The robots’ movement

B. The robots’ weight

C. The robots’ sizes

D. The robots’ walking speed

74. 3.The underlined words “two abilities” in Para.4 refer to ______.

A. walking and running

B. walking and holding

C. moving and using little energy

D. moving and balancing

75. 4.According to Jonathan Hurst, we know that robots with good movement ability ______.

A. can be used in medical science

B. are only used in highly dangerous situations

C. will hardly be created in the future

D. will have a bad influence on man

 

查看答案和解析>>

同步練習(xí)冊答案