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For years, the automobile industry has been testing vehicles that use hydrogen as fuel. Now, people across the United States have had a chance to see and even drive cars that get power from hydrogen fuel cells (燃料电池).
But the hydrogen fuel cell is not a new idea. The fuel cell was first invented by Sir William Grove of Britain in 1839. Since then, many different designs, have been invented. There is one place where fuel cells are a proven technology: in space. The American space agency used fuel cells in its Apollo spaceships in the twentieth century.
The most useful fuel cell for transportation purposes is the Polymer Electrolyte Membrane, or P.E.M. fuel cell. It is simple and can operate at temperatures of sixty to eighty degrees Celsius. That is much lower than other fuel cell designs. A P.E.M. fuel cell has two sides divided by a thin membrane (膜). Hydrogen gas is forced through one side where it comes in contact with a reactive material containing the metal platinum(铂). The membrane separates the electrons(电子) from the protons(质子) in the hydrogen atoms. The protons pass through it to the other side of the fuel cell. But the electrons are captured to do work; like powering a motor. Oxygen from the air is forced into the other side of the fuel cell. There, the gas meets the protons that have passed through the membrane. They combine to form water and heat. A single fuel cell does not produce a lot of electricity. But when many fuel cells are combined, they can produce enough electricity to power a vehicle. The product of the chemical reaction that powers fuel cells is water. This makes fuel cells a very clean technology.
Hydrogen fuel cell cars have been slow to develop because of many technical problems that have to be solved. For example, it is unclear how long the membranes in P.E.M. fuel cells will last. Also, fuel cells need water for their chemical reactions. They must be designed to start easily at low temperatures and in dry climates. And smaller, less costly fuel cells must be designed before they can truly take the place of gasoline engines. Now more models of fuel cell vehicles are being tested than ever before. The threat of climate change and the high cost of oil have increased interest in these vehicles that do not cause pollution.

Humankind has tried to improve its standard of living since the very beginning of civilization. Back then, as well as today, providing food and security was the basic task for a person. However, nowadays the range of required goods has expanded significantly. People feel the need for not only some primary things, such as a piece of bread and a roof over their heads, but also for various facilities and luxuries. Providing humanity with these things is connected to the use of natural resources, which requires energy. In turn, the common sources of energy we use today cause pollution, so economic growth is almost inevitably associated with environmental damage.

Economic growth is the increase in numbers of goods and services produced over time by an economy, and it's calculated in terms of real Gross Domestic Product (GDP). Before growth is calculated, inflation(通货膨胀) is adjusted in order to take into account its misleading effect on the price of goods and services. Economic growth can also be explained as the increase in expected output, which results from an increase in actual output, or total demand.

There are certain aspects of economic growth which affect the environment. The first of these is the fact that in order to produce more goods and products, at a faster rate, the construction of large industrial plants is required. These plants produce a lot of waste, leading to the pollution of water and the atmosphere, which may cause negative long- term health effects to nearby populations of animals, or people. They also lead to global warming.

Industrial manufacturing leads to the constantly increasing energy consumption. The traditional energy sources, which are commonly used nowadays, are considered to be the greatest polluters to the environment. There also exist so-called eco-friendly sources of energy. They are sometimes preferred but replacing the traditional sources with them also requires time, during which people have to make some sacrifices to support these undertakings.

In order to produce economically practical energy, a sometimes significant transformation of the natural site is often inevitable. This is expensive and, has harmful effects on the environment. Application of wind energy would Block airflows' natural speed, which is the reason for their decrease in strength, after crossing the windmill. Consequently, the pressure balance that is brought about by this current will be affected, and it is important to remember that the environment and weather conditions are directly affected by atmospheric pressure.

For these reasons, bringing about economic growth without resulting in any environmental damage is impossible.

1.What does the passage mainly talk about?

A．Pollution caused by plant construction

B．Effects of windmills on the environment

C．Economic growth and human civilization

D．Economic growth and environmental damage

2.According to the passage, the author holds the opinion that ____.

A．economic growth should be calculated in terms of GDP

B．use of natural resources causes no damage to the environment

C．industrial manufacturing may cause damage to the environment

D．a windmill is a perfect way to produce economically practical energy

3.Which of the following shows the structure of the passage?

CP (Central Point)     P (Point)      Sp (Sub-point次要点)    C (Conclusion)

【小题1】His dream was that the Olympic Games would make it possible for countries and people live p_____ side by side.
【小题2】Did you know the f_____ of the national table tennis competition? The result was very surprising.
【小题3】If we don’t fall in deep thought and are just satisfied with surface things, sooner or later we will find we haven’t gained anything because our first i_______ has blinded and misled us.
【小题4】Before our talk, I did not think very much about how an advertiser might be trying to t_______ customers into buying a product or a service.
【小题5】PSAs are often placed for free, and are i______ to educate people about health, safety, or any other issue which affects public welfare.
【小题6】Join me in wishing the Olympic movement a successful future to match its （光辉的）________ past .
【小题7】 One of the PSAs to teach us how to live healthy lives is ‘Smoking is ______ suicide(自杀) slowly’.
【小题8】Our new packaging will be colorful and ________ (引人注目).
【小题9】 It is ______(极其) important to know your audience so you can create the right message for the right people.
【小题10】 Fifteen years later the Qin Dynasty was _______ (推翻).

For years, the automobile industry has been testing vehicles that use hydrogen as fuel. Now, people across the United States have had a chance to see and even drive cars that get power from hydrogen fuel cells (燃料电池).
But the hydrogen fuel cell is not a new idea. The fuel cell was first invented by Sir William Grove of Britain in 1839. Since then, many different designs, have been invented. There is one place where fuel cells are a proven technology: in space. The American space agency used fuel cells in its Apollo spaceships in the twentieth century.
The most useful fuel cell for transportation purposes is the Polymer Electrolyte Membrane, or P.E.M. fuel cell. It is simple and can operate at temperatures of sixty to eighty degrees Celsius. That is much lower than other fuel cell designs. A P.E.M. fuel cell has two sides divided by a thin membrane (膜). Hydrogen gas is forced through one side where it comes in contact with a reactive material containing the metal platinum(铂). The membrane separates the electrons(电子) from the protons(质子) in the hydrogen atoms. The protons pass through it to the other side of the fuel cell. But the electrons are captured to do work; like powering a motor. Oxygen from the air is forced into the other side of the fuel cell. There, the gas meets the protons that have passed through the membrane. They combine to form water and heat. A single fuel cell does not produce a lot of electricity. But when many fuel cells are combined, they can produce enough electricity to power a vehicle. The product of the chemical reaction that powers fuel cells is water. This makes fuel cells a very clean technology.
Hydrogen fuel cell cars have been slow to develop because of many technical problems that have to be solved. For example, it is unclear how long the membranes in P.E.M. fuel cells will last. Also, fuel cells need water for their chemical reactions. They must be designed to start easily at low temperatures and in dry climates. And smaller, less costly fuel cells must be designed before they can truly take the place of gasoline engines. Now more models of fuel cell vehicles are being tested than ever before. The threat of climate change and the high cost of oil have increased interest in these vehicles that do not cause pollution.

“Image is everything．” An entire industry has been built upon the assumption that image is everything, but when it comes down to it, an appealing image is not enough．If there is no substance（事实） behind the image, the product, service or person will fail eventually．

First of all, one should consider how important image is in the selling of products and services．Advertising agencies have raised the art of creating an image to a state of near perfection．Public concept of that product or service is certainly managed by the images created by the advertising agencies．But if the product or service does not live up to the image that was created, the customer will be very dissatisfied and possibly ask for their money back．For example, the Arthur Andersen accounting firm had spent decades building up an image of trustworthiness．But the recent scandal(丑闻) showed that behind that image, it cheated in business practices．Despite the previous positive image, the firm is being accused of criminal actions and it will probably not survive as a business unit．Although the image had been nearly perfect, the reality behind the image has led to the downfall of the world famous accounting firm．

Similarly, personal advisers can build up a public image for politicians and movie stars．Putting out positive news releases, making sure that only the best photographs are published, and ensuring that the person is seen in all the right places can build up a very positive image in the view of the general commons．But once again, history is filled with examples of both politicians and movie stars that fell from grace like the story of the Hollywood actor giving in to the pressures of fame and fortune．With people, just as with products and services, image is certainly important, but without positive substance behind the image, failure is close．

To summarize, it is clear that an appealing image is extremely important to success, whether that image is related to selling a product or service or to the “selling” of a person．But image is only half of the equation．What lies behind that image is every bit as important as the image itself —— the person or product must deliver on that image or there is little chance for long-term success．

1.The downfall of the Arthour Andersen accounting firm is due to ________．

A. its dishonesty in business  B. its previous images

C. its bad management      D. its poor service

2.Why did some famous people fall from grace?

A. Their images were not well built up

B. They failed to live up to their images．

C. They felt much pressure from the public

D. They paid little attention to fame and fortune

3.The structure of the passage is ________．

A: Argument     P: Point     C: Conclusion

4.The author tries to argue that _________．

A. image creates everything

B. image is the key to success

C. truth is unlikely ever to be equaled

D. truth and image are equally important