题目列表(包括答案和解析)
Life on earth depends on water, and there is no substitute for it. The current assumption is that our basic needs for water — whether for drinking, agriculture, industry or the raising of fish will always have to be met . Given that premise (前提), there are two basic routes we can go: more equal access to water or better engineering solutions.
Looking at the engineering solution first, a lot of my research concentrates on what happens to wetlands when you build dams in river basins, particularly in Africa. The ecology of such areas is almost entirely driven by the seasonal changes of the river — the pulse of the water. And the fact is that if you build a dam, you generally spoil the downstream ecology. In the past, such problems have been hidden by a lack of information. But in the near future, governments will have no excuse for their ignorance.
The engineers’ ability to control water flows has created new kinds of unpredictability, too. Dams in Africa have meant fewer fish, less grazing and less floodplain (洪泛区) agriculture — none of which were expected. And their average economic life is assumed to be thirty years. Dams don’t exist forever, but what will replace them is not clear.
The challenge for the future is to find new means of controlling water. Although GM technology (转基因) will allow us to breed better dry-land crops, there is no market for companies to develop crops suitable for the micro-climates of the Sahel and elsewhere in Africa. Who is going to pay for research on locally appropriate crops in the Third World?
【小题1】What’s the main idea of this passage?
| A．The engineering solutions to water resource and their limitation. |
| B．The challenge for the future. |
| C．The basic means of controlling water. |
| D．The challenge for developing crops. |
| A．Water resource should be used more reasonably. |
| B．More dams should be built in river basins. |
| C．More wetlands should be protected from destruction. |
| D．More dry-land crops could be developed in Africa. |
| A．The ecological destruction will be known to the public by researchers |
| B．The ecological destruction will no longer be a problem in the future |
| C．The future is an information age |
| D．Governments will face greater challenge in the future |
| A．fewer fish | B．less grazing land |
| C．less floodplain agriculture | D．less farming land |
| A．No one will invest in developing locally appropriate crops in Africa |
| B．Researchers have no interest in developing dry-land crops |
| C．Research on locally appropriate crops in the Third World may be profitable |
| D．There is less water resource in the Third Worldk*s*5u |
The world itself is becoming much smaller by using modern traffic and modern communication means （通讯设备）.Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest 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 carbon dioxide is now the most dangerous kind of air pollution. It is caused by heavy traffic. It is true 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 population at the same time.
【小题1】.
. Hundreds of years ago, the pollution was _________it is today.
| A．much easier than | B．as easy as | C．as hard as | D．much less than |
| A．because the earth is being polluted day and night |
| B．because science is developing |
| C．because of the rise in population |
| D．because the earth is blown away by the wind every year |
| A．it does harm to all living things in the world | B．it makes much noise |
| C．it makes our rivers and lakes dirty | D．it makes us angry more easily |
| A．Stop people from burning coal in the houses and factories in the city |
| B．Stop putting dirty smoke into the air |
| C．Encourage people to go to work by bike or on foot instead of driving a car |
| D．Don’t throw rubbish into the river. |
| A．The problem of pollution is not so serious because there are not so many people living on the earth. |
| B．The pollution of the earth grows as fast as the world’s population does. |
| C．If people could go to work by bike ,it would be helpful against the problem of carbon dioxide. |
| D．Many countries are making rules to fight against pollution. |
Yesterday the police were joined by more than 20 volunteers in the continuing search for the two missing teenagers, Vicky Gray and Tom Hunter, and their guide, Gavin Jones. The police said that they had disappeared during an adventure tour of Cape York Peninsula.
This was the second day of the search and the police were now very worried about the safety of the three missing people.
The police said that the search had covered a wide area, but the rainforest was thick and their work was made harder by the recent rain. Later on Chief Inspector Roger Fleet said, “The travelers had a radio with them. If they had been in trouble, they would have called us.”
The three travelers left Cooktown very early on Saturday morning in a Toyota car. They took a small dirt road that runs down to the Daintree River, a dangerous river full of crocodiles (鳄鱼). Chief Inspector Roger Fleet said the tourists wouldn’t have got into trouble if they had stayed on the main road.
A photo of Vicky and Tom was found by a policeman under the “Be Careful about crocodiles” sign near the river. Why was the photo left behind? This is just one of the unanswered questions. Other questions are: Why was the photo left behind? Why was the Toyota parked and locked at the edge of the rainforest? The police said that the travelers had left a map of the area behind. Why? Why had someone drawn a cross on the point (地点) where the car is? Is this a sign? What does it mean? If anyone can give information or has seen these three young people, contact the local police in Cooktown.
【小题1】This article is probably taken from ___________
| A．a newspaper | B．a magazine | C．a storybook | D．a guidebook |
| A．A touring map. | B．A photo of the travelers. |
| C．The travelers’ radio. | D．The travelers’ car |
| A．why they left a photo behind | B．why they came to this area |
| C．why their Toyota was parked in the place | D．why a cross was drawn on the map |
| A．join the police in searching for the missing people |
| B．tell the police about the travelers’ ages and their appearance |
| C．learn the lesson and stop taking adventure tours |
| D．provide information about the missing people |
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 is pollution. To pollute mean 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 a place, men 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 to all living things in the world, but it is not only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us become angry more easily.
Many countries are making rules to fight pollution. They stop the people from burning coal in houses and factories in the city, and from blowing dirty smoke into the air.
The pollution of SO2 is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is 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 keep careful of the rise in pollution at the same time.
【小题1】Our world is becoming much smaller ___________.
| A．because the earth is being polluted day and night. |
| B．thanks to science developing. |
| C．because of the rise in pollution |
| D．because the earth is blown away by the wind every year. |
| A．water pollution | B．air pollution | C．noise pollution | D．rubbish |
| A．it’s bad to all living things in the world. |
| B．it makes us become angry more easily. |
| C．it has made our rivers and lakes dirty. |
| D．it makes much noise. |
| A．The problem of pollution is not so serious because there are not so many people. |
| B．From now on, maybe people try to go to work by bus or bike instead of car or motorbike. It is helpful to fight against the pollution of SO2. |
| C．The pollution of the earth grows as fast as the world’s pollution does. |
| D．Many countries are making rules to fight pollution. |
Life on earth depends on water, and there is no substitute for it. The current assumption is that our basic needs for water—whether for drinking, agriculture, industry or the raising of fish—will always have to be met. Given this premise (前提), there are two basic routes we can go; more equal access to water or better engineering solutions.
Look at the engineering solutions first. A lot of my research concentrates on what happens to wetlands when you build dams in river basins, particularly in Africa. The ecology of such areas is almost entirely driven by the seasonal changes of the river—the pulse of the water. And the fact is that if you build a dam, you generally spoil the downstream ecology. In the past, such problems have been hidden by a lack of information. But in the near future, governments will have no excuses for their ignorance.
The engineers’ ability to control water flows has created new kinds of unpredictability, too. Dams in Africa have meant fewer fish, less grazing and less floodplain (洪泛区) agriculture, none of which were expected. And there average economic life is assumed to be thirty years. Dams don’t exist forever, but what will replace them is not clear.
The challenge for the future is to find new means of controlling water. Although GM technology(转基因) will allow us to breed better dry-land crops, there is no market for companies to develop crops suitable for the micro-climates of the Sahel and elsewhere in Africa. Who is going to pay for research on locally appropriate crops in the Third World?
1.What’s the main idea of this passage?
A．The engineering solutions to water resource and their limitation.
B．The challenge for the future.
C．The basic means of controlling water.
D．The challenge for developing crops.
2.The author suggests that governments will have no excuse for their careless ignorance in the future because _____.
A．The ecological destruction will be known to the public by researchers
B．The ecological destruction will no longer be a problem in the future
C．The future is an information age
D．Governments will face greater challenge in the future
3.Which of the following statements is NOT true for meeting our basic needs for water?
A．Water resource should be used more reasonably.
B．More dams should be built in river basins.
C．More wetlands should be protected from destruction.
D．More dry-land crops could be developed in Africa.
4.The last sentence probably implies that _____.
A．No one will invest in developing locally appropriate crops in Africa
B．Researchers have no interest in developing dry-land crops
C．Research on locally appropriate crops in the Third World may be profitable
D．There is less water resource in the Third World
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