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How can we get rid of garbage （垃圾) ？ Do we have enough energy sources to meet our future

How can we get rid of garbage (垃圾) ？ Do we have enough energy sources to meet our future energy needs？

These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time. They suggest using garbage as an energy source, and at the same time it can save the land to hold garbage.

For a long time, people buried garbage or dumped (倾倒) it on empty land. Now, empty land is scarce. But more and more garbage is produced each year. However, garbage can be a good fuel to use. The things in garbage do not look like coal, petroleum, or natural gas, but they are chemically similar to these fossil(化石) fuels. As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source.

Burning garbage is not a new idea. Some cities in Europe and the United States have been burning garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby buildings. In Paris, France, some power plants burn almost 2 million metric tons of the cities garbage each year. The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil.

Our fossil fuel supplies are limited. Burning garbage might be one kind of energy source that we can use to help meet our energy needs. This method could also reduce the amount of garbage piling up on the earth.

What two problems can man solve by burning garbage？

A．The shortage of energy and air pollution.

B．The shortage of energy and the land to hold garbage.

C．Air pollution and the shortage of fossil fuel.

D．Air pollution and the shortage of land to hold garbage.

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发布时间：2021-12-11

更多“How can we get rid of garbage （垃圾) ？ Do we have enough energy sources to meet our future”相关的问题

第1题

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第2题

The water we drink and use is running short in the world.

We all have to learn how to stop wasting our limited water. One of the steps we should take is to find ways of reusing it. Experiments have already been done in this field.

Today in most large cities, fresh water is used only once, then it runs into waste system. But it is possible to pipe the used water to a purifying factory. There it can be filtered and treated with chemicals so that it can be used again, just as it were fresh from a spring.

But even if every large city purified and reused its water, we still would not have enough. Then we could turn to the oceans. All we’d have to do to make use of the seawater on earth is to get rid of the salt.

This process is called desalinization, and it is already in use in many parts of the world.

The way to stop wasting our limited water is to （）.

A.do experiments with water

B.purify the used water and reuse it

C.use fresh water once again

D.make use of seawater

点击查看答案

第3题

According to the author, the same educational opportunities can't get rid of inequality because （）.

A.the principle survival of the fittest' exists

B.Nature ignores equality in dispensing brains and ability

C.Material rewards are for genuine ability

D.People have the freedom how to educate their children

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第4题

Don’t （) how much you can get done in a day, because many things take more time than we expect.

A.expect

B.estimate

C.overestimate

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第5题

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第6题

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第7题

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C.I agree with you on this point,and we should pay more to attention to food safety.

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第8题

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第9题

—How can people avoid food contamination nowadays？—（)

A. People should have balanced food to get different nutrients they need.

B. I agree with you on this point, and we should pay more to attention to food safety.

C. The government should set strict rules to standardize the production of food.

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第10题

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iction．But we ________ on this problem trying to improve the situation.

To tell you the truth, it's very hard for us to he

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