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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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更多“How can we get rid of garbage …”相关的问题

第1题

根据以下内容回答下列各题, 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 wed 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

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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

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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

If you feel a shortage of energy, join our Health ...

If you feel a shortage of energy, join our Health Club. Fatigue is common for people to 1）_________ of to their doctors. In such cases, you should take a look at the causes for your tiredness and learn how you can get rid of it. Firstly, if you have to work hard 24 hours a day, seven days a week with high 2)_________, you will feel tired and bored. The 24/7 push to be productive can wear you out both physically and 3)__________. Your can have mini-breaks that will cheer you up and make your routine a little less routine. Secondly, if you sit staring at a screen for long periods of time you tend to blink less frequently and 4)_______your eyes. Your eyes need a break. Stand up once in a while to 5)_________ your legs and arms. Frequent breaks with long 6)__________ to your nearby parks will keep your body active and reduce eyestrain. Finally, gaining as little as five pounds of weight can cause 7)________. Extra weight also puts extra burden on your heart, which makes you tired. You can 8)_________ the habit of eating junk food and 9)___________ yourself to the basics of healthy eating. Try to eat smaller 10)_________ of food. With each pound of weight you lose, you'll feel a rise in energy. A) reverse B) strip C) strain D) empty E) portions F) fatigue G) rides H) emotionally I) reserve J) stretch K) dump L) complain M) collections N) efficiency O) strides

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第6题

ane：I like oranges,watermelons,grapes,and bananas.Michael：？Jane：How about 8 in

ane：I like oranges,watermelons,grapes,and bananas.

Michael：？

Jane：How about 8 in the morning？We can get there in an hour and a half.

Michael：OK. I'll call John and tell him about our plan.

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第7题

Speaker A: What shall we do this weekend？ Speaker B: How about going to London on Saturday

？ There's a good exhibition on at the Royal Academy. Speaker A: ______. Shall we get the coach or the train？

A．I'd like to say yes but it's just not possible

B．I'd rather go to another place

C．OK, that's a good idea

D．I can't make it Saturday

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第8题

--- A: I can put you down for eleven o’clock. Is that OK?

--- B: _____

A.Oh, I’ll be having an interview that time. How about 3 o’clock in the afternoon?

B.Friday is good.

C.Yes, we could.

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第9题

–– Frank: We haven't got together for a long time. How about lunch next week？–– N

–– Frank: We haven't got together for a long time. How about lunch next week？

–– Nick: I' m pretty tied up all next week. How about we plan on two weeks from today？____.

–– Frank: OK Wednesday in two weeks.

A: I can reach it on that Wednesday

B: I can get it on that Wednesday

C: I can assure it on that Wednesday

D: I can make it on that Wednesday

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第10题

听力原文：Stress is a very normal part of life. Most people feel stress at some time in the

听力原文： Stress is a very normal part of life. Most people feel stress at some time in their lives. It doesn't come from an event itself, that is, from the things that are happening in our lives. It comes from the meaning we give to what has happened. We can experience stress any time we feel we don't have control. It can come from a feeling that we can do anything about a situation.

Stress is not just caused by our mental or emotional condition. It is also influenced by how tired we are, whether we have a balanced diet with enough vitamins and minerals, whether we get enough physical exercise and whether we can relax. If we feel stressed, there are several things that we can do. First, we need to learn how to relax and breathe slowly and smoothly.

We can also take some time out of our worried, busy schedule to notice the small things in life. Smell the air, look at the flowers, notice the small designs in the leaves on a tree -- these activities can do much to quiet us and to give ourselves a small break in a busy schedule.

We need to take care of our bodies. Being tired makes it easier for us to get sick and to develop physical problems related to stress. We need to get enough rest, eat well, and do some regular exercise.

Finally, we need to find what is causing the stress in our lives. Once we have found it, we need to begin to change that part of our lives. If we believe that we can control stress, we can begin to control our lives.

(34)

A．An unexpected event.

B．The understanding to an event.

C．The things that happen in our lives.

D．The influence of others.

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