听力原文:Forests are of great importance to our environment because they can absorb carbon - 试题答案网问答

第1题

听力原文：Human beings are cutting down the world's rain forests at the rate of 20 hectares

听力原文： Human beings are cutting down the world's rain forests at the rate of 20 hectares a minute (31) . Every year, 30 million hectares of rain forests are destroyed. And at this rate, most of the world's rain forests will disappear very soon.

The forests are cut down sometimes for wood, sometimes for farms so that crops and vegetables can be planted and sometimes to make way for roads. But the forests do not re-grow. The soil is very thin and it is soon washed away by the rain. The land is then too poor for the forests to begin to grow again.

There are a number of good reasons for saving the rainforests. Several important drugs in hospitals have come from the rain forests. Also they produce food. The rain forests are rich in wildlife, too. They cover less than 10% of the world's land, but they contain 40%～50%of the world's species of plants and animals (29) . The trees supply oxygen. If the rain forests are destroyed, this will change the world's weather (30) . Temperatures will go up, sea levels will rise and there will be changes in rain and snowfall.

Today, research studies in forests in Panama, New Guinea and Indonesia may help us to find solutions to save the world's rain forests.

(30)

A．15%.

B．10%.

C．About 50%.

D．Nearly 30%.

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第2题

听力原文：Experts say some fanning activities are seriously damaging Earth's environment. B

听力原文： Experts say some fanning activities are seriously damaging Earth's environment. Bad farming methods can damage soil, forests and water supplies. They also have caused some plants and animals to disappear.

Two groups now say that bad farming methods are threatening the ability of farmers to produce enough food to feed the world population in the future.

The groups used satellite images, maps and modern equipment to study the effect of agriculture on the environment.

The study found that the destruction of soil is widespread, Important organic nutrients are being removed from farmland.

Agriculture uses 70 percent of the freshwater in the world each year. The study found that many farmers are wasting water supplies. In addition, chemicals designed to protect crops may pollute waterways.

The report also says as much as 30 percent of the world's forests have been cut down so the land could be used for agriculture. This has led to a severe loss of wildlife and their environments.

(30)

A．Soil.

B．Human population.

C．Forest.

D．Water.

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第3题

听力原文：High in dense bamboo forests in the misty, rainy mountains of southwestern China

听力原文： High in dense bamboo forests in the misty, rainy mountains of southwestern China lives one of the world's rarest mammals: the giant panda, also called the panda. Only about 1,000 of these black-and-white relatives of bears survive in the wild.

Pandas eat almost nothing but bamboo shoots and leaves. Occasionally they eat other vegetation, fish, or small animals, but bamboo accounts for 99 percent of their diets. Pandas' teeth are very broad and flat. The shape of these teeth helps the animals crush the bamboo shoots, leaves, and stems they eat. There are many species of bamboo. Only a few of these grow at the high altitudes where pandas live today. A panda should have at least two bamboo species where it lives, or it will starve.

Giant pandas used to be able to move quite easily from one mountain top to another in search of food. Now the valleys are mostly inhabited by people. Pandas are shy; they don't venture into areas where people live. This restricts pandas to very limited areas.

Conservation organizations and Chinese government officials and scientists continue to work toward resolving the pandas' isolation problems. Maintaining "Bamboo Corridors" -- strips of undisturbed land through which pandas can comfortably travel from mountain to mountain-- is one of the many ideas that may help save the giant panda.

(29)

A．100.

B．500.

C．1,000.

D．1,500.

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第4题

听力原文： Finland is perhaps the most beautiful and mysterious of the countries of Northe

rn Europe. Two thirds of its surface is covered with thick forests and among them lie lakes, connected with rivers and canals. The northern part of this country is inside the Arctic Circle, where almost no trees Can grow because of its cold weather and the people use their deer for transport, clothing and food.

The Finnish history began in the Middle Ages. In about 1155, Finland Was conquered by its western neighboring Sweden. After a period of rule by Denmark in the 14th century, the Swedes won back independence and power in 1523 under their brave king, During the Napoleonic Wards (1814 -1818), Finland was passed finally from Sweden to Russia. The opportunity came in 1917, when the Russian Revolution brought foreign rule of Finland to an end. Shortly after Soviet Russia made peace with Germany, 1919 saw the founding of the Finnish Republic.

The years between the First and Second World Wars were years of progress and growing development. Finland has no coal or oil, and the nation's wealth lies in the timber (wood prepared for use in building, etc. ) from its forests, which supplies material for paper and furniture making, and in the electric power from its water.

How much of Finland's surface is covered with thick forests？

A．About 67%.

B．About 50%.

C．100%.

D．66%.

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第5题

听力原文：Going through cities and villages, I was attracted by Swedish national flags flyi

听力原文： Going through cities and villages, I was attracted by Swedish national flags flying over houses and buildings which were ordinary family houses and offices. I noticed that on the road, all the cars' headlights were turned on even under the sun of June. Mr. Raiding explained that according to the new traffic regulations, drivers were required to keep the lights on day and night, which helped decrease the traffic accidents. Along both sides of the road, there were high fences used to keep the animals living in the forests from rushing onto the road. I could see little bare land in the country. In fact, fifty-four percent of the land is covered by forests and another ten percent by lakes and rivers. I was told that in Sweden nobody has the right to lay the land bare -- whoever cuts the trees Or spoils the grass must restore it right away. Whenever trees are cut, they are replaced by young trees at once.

Around Sweden, there is a notice in the bathroom of every hotel, which reads: "We care for our environment." In Sweden, you cannot see rubbish in streets, public gardens, rivers or lakes. The bottles are made of glass and the packages are made of paper or other natural materials which can be recycled. To make best use of their resources, Swedes never turn on the heating too high or the air-condition too low. The indoor temperature is always kept around twenty-five degrees Centigrade, no matter at home or in large hotels.

(33)

A．Because it would help decrease traffic accidents.

B．Because it was a Swedish custom.

C．Because it was always very dark in Sweden.

D．Because it was always cloudy and rainy in Sweden.

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第6题

听力原文：A United Nations' report says Asian countries are facing major environmental prob

lems. The report released in Bangkok said that parts of China, India, Iran, Afghanistan and Pakistan are threatened by man-made and natural events that turn productive land into deserts. It said the most serious threat to the area is the rapid shrinking of Asia's rain forests, or woods, especially in Malaysia, the Philippines and Thailand. The report said the reduction in wood areas has already led to increased flooding, water-shortages in the dry seasons and the loss of farm lands. A top U.N. official said that as much as 70% of the woods in Asia will be gone in 20 years unless actions are taken now to save them.

What problems are Asian countries facing according to the United Nations' report？

A．Problems of water-shortages.

B．Problems of flood, and the loss of farmland.

C．Most problems of environment.

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第7题

听力原文：The national forestry industry has seen a large increase in the demand for lumber

over the last 12 months. According to forestry statistics, revenues increased by 21 percent to $1.2 billion. The main reason for this increase has been due to the rise in home construction. This has resulted in a shortage of workers in the forestry sector. However, this shortage of workers should be resolved within the next four months. Employees are earning more pay for their work compared to last year. The amount of trees planted last year was a record for the country. There is also healthy competition among lumber companies within the country that is expected to continue for the next two years. The only foreseeable threat to the lumber industry is the possibility of the spruce budworm infecting large forests and destroying trees. Fortunately, scientists and researchers believe the risk is minimal.

What is the main reason for the growth in forestry？

A．The shortage of workers in the industry.

B．The elimination of forestry regulations.

C．The increase in home construction.

D．The addition of new technologies.

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第8题

听力原文：Antarctica is the fifth largest of the Earth's seven continents. It surrounds the

听力原文： Antarctica is the fifth largest of the Earth's seven continents. It surrounds the South Pole, the point at the southern end of the Earth's axis. Antarctica has no permanent human population because it is almost completely covered by ice. Antarctica is shaped somewhat like a comma, with a round body surrounding the South Pole and a tail curving toward South America. Antarctica lies 1,000 km (600 mls) from South America, its nearest neighbor; 4,000km(2,500 mls) from Africa; and 2,500 km (1,600 mls) from Australia. Antarctica's latitude and high elevations make it the coldest continent in the whole world.

Antarctica was first discovered in the early 19th century, and because of the extreme cold and the lack of native peoples, forests, land animals, and obvious natural resources, the continent remained largely neglected for decades. Scientific expeditions and seal hunters had explored only parts of its coasts by the end of the 19th century, while the interior remained unknown. Explorers first reached the South Pole in 1911, and the first permanent settlements—scientific stations—were established in the early 1940s. From that time the pace of exploration accelerated rapidly. Scientists continue to conduct research in Antarctica, and in recent years increasing numbers of tourists have visited Antarctica to appreciate the region's majestic scenery and wildlife.

(23)

A．North America.

B．South America.

C．Africa.

D．Australia.

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第9题

听力原文：When men first lived on the earth a long time ago, they had no proper place to li

听力原文： When men first lived on the earth a long time ago, they had no proper place to live in. In order to get away from the heat of the sun, to keep themselves warm and dry, they found caves. Caves really gave them some kind of help. Some of these early men built their shelters up in the tree to escape wild animals. They had a hard life and had to go about from place to place for food. Much later on, their lives began to change. They learnt how to keep animals in herds. As they had to move their herds of animals from place to place for grassland, they had to build shelters which were easily carried about.

When they finally learnt the art of farming, they had to clean forests and started planting crops. After that, they had to think about building more permanent shelters. Old houses were built at first with wood and they even use grass as roofs. This went on for a long time. They kept making their houses better. Today, houses of all kinds are built. They are strong, permanent and can last a very long time.

(30)

A．To get away from the heat of the sun.

B．To keep themselves warm.

C．To get away from the rain.

D．To keep themselves dry.

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第10题

听力原文：One of the reasons for our success as a species is our ability to eat and thrive

听力原文： One of the reasons for our success as a species is our ability to eat and thrive on a large variety of foods. Many animal species have become extinct or are on the edge of extinction partly because they lack this adaptability. They need to feed on a particular kind of plant or a particular kind of animal or insect. If this source of food is for any reason re- moved, then the animal concerned is unable to change to a different diet. Gradually it becomes extinct. We know that many animal species have died out, but so have some human species such as the early form. of mall that is called Neanderthal man. Perhaps part of the reason for his failure to survive was his lack of adaptability in diet. But modern man is almost entirely free from the limitation of any particular food requirements. We are able to survive on a wide variety of foods both animal and vegetable. For example, the Eskimos are almost totally meat eaters: seal, bear, whale meat and fish form. their whole diet; the Aborigines of Australia, living in dry desert regions, have learnt to survive by making use of forms of insect life as food to supplement their diet of fruits and roots. Men have learnt to survive in the deserts and in dense rain forests; they have learnt to raise domestic animals, which live at high altitudes so that they can inhabit the mountainous regions of the world like Tibet; and they have made the coconut their chief food on the Pacific islands.

(30)

A．It is all ability both man and animals possess.

B．It is the reason for man's superiority over animals.

C．It is one of the reasons for man's success as a species.

D．It is a proof of our superior intelligence.

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听力原文：Forests are of great importance to our environment because they can absorb carbon