听力原文:In the past few years, millions of Americans have become suddenly enthusiastic ab - 赤豆云问答

第1题

听力原文：In the past two years, millions of Americans have suddenly embraced the bicycle a

听力原文： In the past two years, millions of Americans have suddenly embraced the bicycle as if it were a startling new invention. Annual bike sales doubled between 1960 and 1970, and there are nearly 70 million bikes in the United States today. That's more than two for every three automobiles.

Of course, the bike has been around for more than 150 years, and this isn't America's first bicycle boom. A wave of bike enthusiasm swept the land in the late 1800s and bicycle production hit two million units in 1897. Then with the coming of the auto, bicycling declined, and for decades remained popular only with children and a few adult faddists.

Now, national preoccupation with air pollution and physical fitness has brought the bike back to the forefront—particularly with adults. More than eight million bikes were sold in the United States last year and a third of them went to adults. The year before, only 15 percent of new bike sales were for adults.

(30)

A．The use of bikes is a new invention in the U.S.

B．Annual bike sales doubled in the 60s in the U.S.

C．The producers made 70 million bikes every year.

D．The number of bikes is two times that of cars in the U.S.

点击查看答案

第2题

听力原文：A good way to see the USA is by car. Americans love their automobiles and in the

听力原文： A good way to see the USA is by car. Americans love their automobiles and in the past fifty years they have developed a vast network of roads and freeways to help them reach their destinations. As few visitors have their own cars, renting one is the next best thing. You will need a valid driver's license and either international credit cards, or a deposit.

You should start out with a working knowledge of the road. Regulations vary from state to state and this can be very confusing to a newcomer. For example, in some states it is legal to turn right at a red light if there is no approaching traffic, while in other states you will be fined for this action. Throughout the country it is forbidden to pass a school bus when it has stopped to let off children.

The size of the country may startle you at first and you may be surprised at the spectacular physical beauty. When the first pioneers began to expand West into the wildness, the natural resources of the land seemed inexhaustible. Nearly 1,000 million acres of land was covered by virgin forests. Much of this was burnt off for farmland and it soon became apparent that the government would have to take action or the natural beauty of the land would be lost for ever.

(33)

A．A driver's license.

B．A passport.

C．An international credit card.

D．A deposit.

点击查看答案

第3题

听力原文：Generations of Americans have been brought up to believe that a good breakfast is

听力原文： Generations of Americans have been brought up to believe that a good breakfast is one of life's essentials. Eating breakfast at the start of the day, we have all been told, and told again, is as necessary as putting gasoline in the family car before starting a trip.

But for many people the thought of food first thing in the morning is by no means a pleasure. So despite all the efforts, they still take no breakfast. Between 1977 and 1983, the number of people who didn't have breakfast increased foam 8.8 million to 11.7 million. For those who feel pain of guilt about not eating breakfast, however, there is some good news. Several studies in the last few years indicate that, for adults especially, there may be nothing wrong with omitting breakfast. "Going without breakfast does not affect performance," said Arnold E. Bender, former professor of nutrition at Queen Elizabeth Collage in London, "nor does giving people breakfast improve performance."

Scientific evidence linking breakfast to better health or better performance is surprisingly indicated, and most of the recent wonk involves children, not adults.

(30)

A．Several studies have been done in the past few years.

B．The omission of breakfast does no harm to one' s health.

C．Adults have especially made studies in this field.

D．Eating little in the morning is good for health.

点击查看答案

第4题

听力原文：For the past few weeks we have been discussing national energy conservation alter

听力原文： For the past few weeks we have been discussing national energy conservation alternatives for the future. Today I am going to talk about what one community is presently doing to conserve energy. The people of Davis, California, have succeeded in cutting their energy consumption by one third since 1973. The first energy-saving action that was taken in the early 70's was the legislation of strict building codes.

All new houses in Davis must have the proper insulation so that heat will not escape unnecessarily during the winter. New houses must also face north or south so that they will not be overheated by the sun in summer. The laws have had a definite effect.

Since 1976 there has been a 50 percent saving in the amount of natural gas and electricity used in heating and air-conditioning. There are other energy-saving features about Davis. Buses, partially supported by the city, transport university students throughout the area. There are 24 miles of bicycle paths, and today there are twice as many bicycles as cars in the city. By reducing the available parking space, the City Council has succeeded in reducing the number of cars in the city every day. Another benefit of the reduced parking is the greater number of small cars.

People are saving gas because they are choosing not to drive or because they are driving fuel economical cars. Davis, California, has become an energy-saving model for other cities. Time is up for today. Next week we'll return to our regular topic of national energy alternatives.

(36)

A．Bicycles and cars.

B．Building codes.

C．Energy conservation.

D．New housing construction.

点击查看答案

第5题

听力原文：Not long ago, some of you may have read about the team of mountain climbing scien

听力原文： Not long ago, some of you may have read about the team of mountain climbing scientists who helped to recalculate the elevation of the highest mountain in the world, Mount Everest. Of course the elevation of Mount Everest was determined many years ago using traditional surveying methods. But these scientists wanted to make a more precise measurement, using a new method that takes advantage of recent advances in technology; it's called the Glob al Positioning System. The Global Positioning System uses 24 satellites that circle the earth. Each of the satellites is constantly sending out signals, and each signal contains important information that can be used to determine the longitude, latitude and elevation at any point on the earth’s surface. Well in order to use the system to calculate a mount of Everest's elevation, scientists need to put a special receiver on the summit to receive signals from the satellites. The problem with this was that in the past, the receivers were much too heavy for climbers to carry. But now these receivers have been reduced to about the size and weight of a hand-held telephone, so climbers were able to take the receiver to the top of the Everest, and from there, to access the satellite system signals that would allow them to determine the precise elevation. And it turns out that the famous peak is actually a few feet higher than us previously thought.

(33)

A．The advantages of traditional surveying methods.

B．Using satellites to communicate with mountain climbers.

C．Obtaining new information about a mountain.

D．Controlling satellites from the top of a mountain.

点击查看答案

第6题

听力原文：Man has a big brain. He can think and speak. Scientists used to think that men ar

听力原文： Man has a big brain. He can think and speak. Scientists used to think that men are different from animals because they can think and learn. They now know that animals can learn —dogs, rats, birds —and worms —can learn. So scientists are beginning to understand that men are different from animals because they can speak. Animals cannot speak. They make noises when they are afraid, or angry, or unhappy. Apes are our nearest cousins. They can understand some things more quickly than human beings, and one or two have learned a few words. But they are still different from us. They cannot join words and make sentences. They cannot think like us because they have no language. They can never think about the past or the future.Language is a wonderful thing. Man has been able to develop civilization because he has language. Every child can speak his own language very well when he is four or five —but no animal learns to speak. How do children learn？ Scientists do not really know. What happens when we speak？ Scientists do not know. They only know that man can speak because he has a big brain.

(34)

A．Because he has a big brain.

B．Because he learns to speak.

C．Because he develops civilization.

D．Because he knows many words.

点击查看答案

第7题

听力原文：British people place considerable value on punctuality, if you agree to meet frie

听力原文： British people place considerable value on punctuality, if you agree to meet friends at three o'clock, you can bet that they'll be there just after three. Since Britons are so time conscious, the pace of life may seem very rushed. In Britain, people make great effort to arrive on time. It is often considered impolite to arrive even a few minutes late. If you are unable to keep an appointment, it is expected that you call the person you are meeting.

If you are invited to someone's house for dinner at half past seven, it is considered good manners to arrive ten to fifteen minutes "late". An invitation might state "7:30 to 8:00", in which case you should arrive no later than 7:50. However, if an invitation says "sharp", you must arrive in plenty of time.

"Drop in anytime" and "come see me soon" are idioms often used in social meetings but seldom meant to be taken literally. It is wise to telephone before visiting someone at home.

Although it is not necessarily expected that you give a gift to your host, it is considered polite to do so, especially if you have been invited for a meal. Flowers, chocolate, or a small gift are all appropriate. A thank-you note or telephone call after the visit is also considered polite and is an appropriate means to express your appreciation for the invitation.

(30)

A．After 8:15.

B． No later than 7:30.

C． No later than 7:50.

D． At 8:00.

点击查看答案

第8题

听力原文：During the last few years, there has been an enormous increase in the number of s

听力原文： During the last few years, there has been an enormous increase in the number of shops, stores and supermarkets which provide facilities for self-service. Their general purpose is to provide goods of every description attractively and cleanly and in perfect condition, so that the customer can serve herself, and then pay for the goods with. the minimum of delay.

The organizers of a self-service store have their difficulties. They must display a great number of goods in a minimum space without covering up anything. They must deal with perishable foodstuffs requiring different ranges of temperature; and they must arrange a speedy flow of customers past the cash registers without overtaxing the operators.

For the purposes of display, many devices are used such as long lengths of adjustable shelves to take various sizes of packs, rotating circular shelves, islands of display stands, racks for tubed foods, and multi-tiered mobile stalls.

Perishable foodstuffs and quick frozen fruit, vegetables and meat are kept in refrigerated self-service cabinets, which keep goods at the required temperatures. These are at zero Fahrenheit for frozen food, 28-32 degrees for meat and fish, and 40-50 degrees for dairy produce and provisions.

Some of the advantages of self-service seem to be that there is no waiting to be served; there is a wide variety of choice, and it is claimed that prepacked meat and vegetables are hygienic. Shopping is said to be more "streamlined" and more economical. Nevertheless many people still prefer to be served by a small shopkeeper who knows them personally and will deliver goods to their homes.

(33)

A．Supermarkets provide cheaper foods.

B．There is less delay in choosing in supermarkets.

C．Food and meat are more clean and more tasty.

D．Air-conditioning is at different temperature.

点击查看答案

第9题

听力原文：The world' s population continues to grow. There now are about 4 billion of us on

听力原文： The world' s population continues to grow. There now are about 4 billion of us on earth. The number could roach 6 billion by the end of the century and 11 billion in another 75 years. Experts have long been concerned about such a growth. Where will we find the food, water, jobs, houses, schools and health care for all these people？ A major new study shows that the situation may be changing. A large and rapid drop in the World' s birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations. Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using, birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from home instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population growth. China is one of the nations that has made great progress in reducing its population growth.

China has already cut its rate of population growth by about one half since 1970. Each Chinese family is now urged to have no more than one child. The hope is to reach a zero population growth with the total number of births equaling the total number of deaths, by the year 2000.

(33)

A．An economic policy of a country.

B．An economic policy of a family.

C．TV programs designed for a family.

D．A birth control policy of a country.

点击查看答案

第10题

听力原文：The world's population continues to grow. There now are about 4 billion of us on

听力原文： The world's population continues to grow. There now are about 4 billion of us on earth. The number could roach 6 billion by the end of the century and 11 billion in another 75 years. Experts have long been concerned about such a growth. Where will we find the food, water, jobs, houses, schools and health care for all these people？ A major new study shows that the situation may be changing. A large and rapid drop in the World's birth rate has taken place during the past 10 years. Families generally are smaller now than they were a few years ago. It is happening in both developing and industrial nations. Researchers said they found a number of reasons for this. More men and women are waiting longer to get married and are using, birth control devices and methods to prevent or delay pregnancy. More women are going to school or working at jobs away from home instead of having children. And more governments, especially in developing nations, now support family planning programs to reduce population growth. China is one of the nations that has made great progress in reducing its population growth.

China has already cut its rate of population growth by about one half since 1970. Each Chinese family is now urged to have no more than one child. The hope is to reach a zero population growth with the total number of births equaling the total number of deaths, by the year

(33)

A．An economic policy of a country.

B．An economic policy of a family.

C．TV programs designed for a family.

D．A birth control policy of a country.

点击查看答案

听力原文：In the past few years, millions of Americans have become suddenly enthusiastic ab