文章大意：本文是一篇说明文。本文介绍了世界上各种污染情况。
1 . The world itself is becoming much smaller by using modern traffic and modern communication means. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is no longer true.
Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO2 is now the most dangerous kind of air pollution. It is caused by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in pollution at the same time.
1. _______, our world is becoming much smaller.
2. Hundreds of years ago, life was __________ it is today.
3. Pollution comes in many ways. We can even hear it. Here “it” means _______.
4. Air pollution is the most serious kind of pollution because _______.
5. Which of the following is NOT true?
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is no longer true.
Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO2 is now the most dangerous kind of air pollution. It is caused by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in pollution at the same time.
1. _______, our world is becoming much smaller.
| A．Because of the rise in pollution |
| B．Thanks to science development |
| C．Because the earth is being polluted day and night |
| D．Because the earth is blown away by the wind every year |
| A．much easier than | B．as easy as |
| C．much harder than | D．as hard as |
| A．rubbish(垃圾) | B．noise pollution |
| C．air pollution | D．water pollution |
| A．it makes much noise |
| B．it makes us angry more easily |
| C．it makes our rivers and lakes dirty |
| D．it’s bad for all living things in the world |
| A．Many countries are making rules to fight pollution. |
| B．The pollution of the earth grows as fast as the world population does. |
| C．The problem of pollution is not so serious because there are not so many people living on the earth. |
| D．If people could go to work by bus or bike instead of car or motorbike, it would be helpful in fighting against the problem of SO2. |
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2 . An absolute description of the threat hanging over the world’s mammals, reptiles, amphibians(不如、爬行、两栖动物) and other life forms has been published by the well-known scientific journal, Nature. A special analysis carried out by the journal indicates that an astonishing 41% of all amphibians on the planet now face extinction while 26% of mammal species and 13% of birds are similarly threatened.
Many species are already critically endangered and lose to extinction, including the Sumatran elephant, Amur leopard and mountain gorilla. But also in danger of vanishing for the wild, it now appears, are animals that are currently rated as merely being endangered.
In each case, the finger of blame points directly at human activites The continuing spread of agriculture is destroying million of hectares of wild habitats(栖息地)every year, leaving animals without homes, while the introduction of newly-come species, often helped by humans, is also damaging native populations. At the same time, pollution and overfishing are destroying ocean ecosystems.
“Habitat destruction, pollution or overfishing either skill off wild creatures and plants or leaves them badly weakened,” said Derek Tittensor, an ocean ecologist at the World Conservation Monitoring Centre in Cambridge. “The trouble is that in coming decades, the additional threat of worsening climate change will become more and more common and could then kill off these survivors.”
The problem, according to Nature, is worsened because of the huge gaps in scientists knowledge about the planet’s biodiversity. Evaluations of the total number of species of animals and plants alive vary from 2 million to 50 million. In addition, evaluations of current rates of species’ disappearances vary from 500 to 36, 000 a year. “That is the real problem we face,” added Tittensor. “The scale of uncertainty is huge.”
In the end, however, the data indicate that the world is heading cruelty towards a mass extinction-which is defined as one involving a loss of 75% of species or more. This could arrive in less than a hundred years or could take a thousand, depending on extinction rates.
1. What’s the main idea of the first two paragraphs?
2. The direct reason for the extinction of some species is _____.
3. From paragraph 4 we know that another future threat is ______.
4. What is the real problem we are facing now according to paragraph 5?
5. What does “This” in the last sentence refer to _____?
Many species are already critically endangered and lose to extinction, including the Sumatran elephant, Amur leopard and mountain gorilla. But also in danger of vanishing for the wild, it now appears, are animals that are currently rated as merely being endangered.
In each case, the finger of blame points directly at human activites The continuing spread of agriculture is destroying million of hectares of wild habitats(栖息地)every year, leaving animals without homes, while the introduction of newly-come species, often helped by humans, is also damaging native populations. At the same time, pollution and overfishing are destroying ocean ecosystems.
“Habitat destruction, pollution or overfishing either skill off wild creatures and plants or leaves them badly weakened,” said Derek Tittensor, an ocean ecologist at the World Conservation Monitoring Centre in Cambridge. “The trouble is that in coming decades, the additional threat of worsening climate change will become more and more common and could then kill off these survivors.”
The problem, according to Nature, is worsened because of the huge gaps in scientists knowledge about the planet’s biodiversity. Evaluations of the total number of species of animals and plants alive vary from 2 million to 50 million. In addition, evaluations of current rates of species’ disappearances vary from 500 to 36, 000 a year. “That is the real problem we face,” added Tittensor. “The scale of uncertainty is huge.”
In the end, however, the data indicate that the world is heading cruelty towards a mass extinction-which is defined as one involving a loss of 75% of species or more. This could arrive in less than a hundred years or could take a thousand, depending on extinction rates.
1. What’s the main idea of the first two paragraphs?
| A．Figures about some wild animals are astonishing. |
| B．“Nature” is the famous journal around the world. |
| C．Many endangered species are close to extinction. |
| D．Some rare species have appeared around the world. |
| A．continuous appearance of new species |
| B．destructive activities of human beings |
| C．more and more homeless animals |
| D．the great change of ocean ecosystem |
| A．destruction of habitats |
| B．overfishing and pollution |
| C．the worsening climate change |
| D．killing off wild creatures and plants |
| A．The killing of wild creatures and cutting of trees. |
| B．The global warming caused by human beings. |
| C．The destruction of ocean ecosystem by pollution. |
| D．Evaluation of current rates of species’ disappearances. |
| A．mass extinction |
| B．extinction rates |
| C．extinction time |
| D．75% of species or more |
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