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听力原文：Hundreds of species of marine life manage to survive even in the darkest depths o

听力原文： Hundreds of species of marine life manage to survive even in the darkest depths of the ocean. These tenants of the sea have evolved some extremely ingenious devices for locating their food and enemies.

Where the light is very dim, some of these deepwater species have developed enormous eyes with almost telescopic lenses, very much like those of owls. Others, especially the fish that survive where there is no light at all, are quite blind but have developed long feelers that enable them to identify and collect stray bits of food that come within a considerable radius of them.

Some inhabitants of the sea supply their own light. They have built-in torches that they can switch on and off, depending on whether they are pursuing or being pursued. Some have regular lamps, spots of steady light, which spread a faint glow through the water around them. One deepwater squid (鱿鱼) can spray a luminous fluid that lights up its immediate vicinity, a neat variation on the ink ejected by its cousins nearer the surface to becloud and darken the water. It is supposed that about half of the varieties of fish living in the dark depths of the ocean have some power of illumination.

(30)

A．Supply their own light.

B．Locate food and enemies.

C．Compensate for the lack of light.

D．Both B and C.

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发布时间：2020-11-17

更多“听力原文：Hundreds of species of marine life manage to survive even in the darkest depths o”相关的问题

第1题

听力原文：W: I wish Susie would stop reciting that poem. I've heard her repeat it hundreds

of times.

M: At least that much. I used to really like Whitman's poems until I had to listen to her over and over again.

Q: What do the man and woman mean？

(19)

A．They are tired of hearing the poem.

B．They are very excited to hear Whitman's poems.

C．Susie is one of their favorite.

D．They want to listen to Susie's recitation of the poem.

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第2题

听力原文：Most Americans think that ice cream is as American as baseball and apple pie. But

听力原文： Most Americans think that ice cream is as American as baseball and apple pie. But ice cream was known long before America was discovered.

The Roman emperor Nero may have made a kind of ice cream. He hired hundreds of men to bring snow and ice from the mountains. He used it to make cold drinks. Traveler Marco Polo brought back recipes for chilled and frozen milk from China.

Hundreds of years later, ice cream reached England. It is said that King Charles I enjoyed that treat very much. There is a story that he bribed his cook to keep the recipe for ice cream a royal secret. Today ice cream is known throughout the world. Americans eat more than two billion quarts a year.

(33)

A．They think that ice cream is very new.

B．They know that ice cream is brought from Europe.

C．They think that ice cream was an American idea.

D．They don't know what ice cream is.

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第3题

听力原文：Science fiction is one of the most popular books today. Hundreds of titles are pu

听力原文： Science fiction is one of the most popular books today. Hundreds of titles are published every year and are read by all kinds of people. Furthermore, some of the most successful films of recent years have been based on science fiction stories. Science fiction is not a fairly new development in literature, its ancestors can be found in books written hundreds of years ago. Modern science fiction writers don't write about men from Mars or space adventure stories. They are more interested in predicting the results of technical developments on science and the human mind; or in imagining future worlds which are a reflection of the world which we live in now. Because of this their writing has obvious political undertones. In an age where science fact frequently overtakes science fiction, the writer may find it difficult to keep ahead of scientific advances.

(33)

A．Science fiction is not a fairly new in literature.

B．Science fiction is very popular with people today.

C．Science fiction only deals with terrible ideas.

D．Many successful films are based on science fiction stories.

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第4题

听力原文：People always seem to be looking for ways to get rich quickly. So when gold was d

听力原文： People always seem to be looking for ways to get rich quickly. So when gold was discovered in California in the mid 1800's, hundreds and hundreds of people rushed in, hoping to get a part of the wealth. Today, gold in California continues to have as much of an appeal as it did over one hundred years ago. Modem prospectors in the form. of mining corporations have headed back to the same area to use new techniques for locating the gold that old time prospectors left behind. These modern prospectors, however, do not have some of the problems the old timers had. Anxious to seek a fast fortune, many of those early prospectors arrived before law and order were established. And they took full advantage of this situation by cheating and robbing each other. But not every one looking for gold in those days was greedy. Some people were generous and helpful. One such person was William Waldo. He established a relief committee that collected money and supplies to help save the lives of countless people who were caught in the mountains by early snowstorms before they even reached California.

(26)

A．Better land.

B．Quick wealth.

C．Modem equipment.

D．Stricter laws.

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第5题

听力原文：This is Ray McCarthy with the news. Reports are coming in of a major train crash

听力原文： This is Ray McCarthy with the news. Reports are coming in of a major train crash in Japan. (32) A passenger train carrying hundreds of workers home from the center of Tokyo is reported to have hit an oncoming goods train. Both were traveling at high speed. (33) Figures are not yet available but it is believed that the death toll could be as high as 300, with hundreds more injured. Emergency and rescue services rushed to the scene. But our reporter says it will take days to clear the track and to establish the numbers of the dead and injured. There was a similar accident on the same stretch of track four years ago.

(34) There was another bomb scare in a large London store last night during late night shopping. Following a telephone call to the police from an anonymous caller, hundreds of shoppers were shepherded out of the store while roads in the area were sealed off. Police dogs spent hours searching the store for a bag which the caller claimed contained 50 pounds of explosives. Nothing was found and the store was given the all-clear by opening time this morning. A police spokesman said that this was the third bomb scare within a week and that we should all be on our guard.

And finally, the motoring organizations have issued a warning to drivers following the recent falls of snow in many parts of the country. (35) Although the falls may be slight, they say extra care is needed.

Questions:

What accident happened recently in Japan？

What do the reports say about the recent accident in Japan？

Why did people have to leave the London store last night？

What did motoring organizations advise drivers to do？

(33)

A．A goods train hit a bus carrying many passengers.

B．Two passenger trains crashed into each other.

C．A passenger train collided with a goods train.

D．An express train was derailed when hit by a bomb.

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第6题

听力原文：Elephants live mostly on grass, leaves and fruit. They also eat the twigs and bar

听力原文： Elephants live mostly on grass, leaves and fruit. They also eat the twigs and bark of trees. The quantity of food and water which they consume is enormous, and they can be very destructive in their search for food, there are two main types of elephants. There is the Asiatic elephant, which is found in India, for example, and the African elephant. Superficially they are very much alike, but the African elephant is generally larger. One characteristic of Asiatic elephants is that they do not like being exposed to the sun, and consequently they prefer to live in shady places. They are also very fond of bathing. Apart from that, the most important difference between the two varieties is that the Asiatic elephant is more easily trained. Elephants in India, for example, have been caught and tamed for many hundreds of years. We have already noted that they have good memories, and it is this that makes them easy to train. Since they are immensely strong, they can carry and drag huge objects, such as the trees and rocks. This makes them extremely valuable as beasts of burden.

(30)

A．Asiatic elephants are larger.

B．African elephants do not like being exposed to the sun.

C．African elephants prefer to live in shady places.

D．Asiatic elephants are fond of bathing.

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第7题

听力原文：Astronomers have spent hundreds of years searching for signs of life on other pla

听力原文： Astronomers have spent hundreds of years searching for signs of life on other planets, using telescopes. When they saw the geography of Mars, they thought they could see canals and that this might be evidence of intelligent life on the planet. More recently, however, spacecraft have been sent to analyze the soil for signs of life. The results were negative and astronomers are now convinced that no life exists on the surface of any other planet in our solar system. To send a spacecraft far beyond our solar system is not realistic because of the huge distances involved.

The only way we are likely to know of its existence is from radio messages unless life comes and visits us. Listening for intelligent life is not a new idea, but the techniques now being used to offer much better chance of success than before. Looking for evidence of life in other solar systems now means using special radio receivers called radio telescopes to listen out for messages. The assumption is that intelligent forms of life would have discovered radio waves and would, like us, be using them to communicate.

Through its research work, astronomers have developed two means of systematically searching for intelligent life. The first method is to select the closet 800 stars like our sun and to direct a radio telescope to scan each one of them for electromagnetic waves. The second way is to survey the entire sky, listening for continuous signals. All this, as well as the chance of discovering that maybe we are not alone in the universe!

(29)

A．Intelligent life.

B．Canals of some kind.

C．Signs of life.

D．Natural resources.

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第8题

听力原文：The earth's oceans are colossal, so much bigger than the land area that they cove

听力原文： The earth's oceans are colossal, so much bigger than the land area that they cover 70% of the surface of the earth. They give us food and materials and a major constituent in the formation of our weather. The extremes of temperature on the earth would be much greater, and many places would be too hot or too cold for humans without the oceans to act as the earth's thermostat.

As our supply of fresh water becomes more and more scarce, we have naturally looked to the oceans, the greatest source of water on earth. But there is so much salt in sea water that it is not fit for human consumption. Scientists have been trying to find ways to turn this salt water into fresh water. Machines for the conversion of water are already at work in certain parts of the world, but their cost is still exorbitant. Science will have to find much cheaper ways to do the job.

Possibilities for food abound in the ocean. In addition to the hundreds of varieties of fish, some kinds of seaweed can be eaten. It is nutritious enough, containing many proteins, vitamins, and minerals that humans need for survival, but so far no one has been able to figure out how to disguise its awful taste.

(30)

A．70% of the land surface.

B．Food.

C．Drinking water directly.

D．Mineral water.

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第9题

听力原文：Good morning, students. I hope you have been able to read the two books about spe

听力原文： Good morning, students. I hope you have been able to read the two books about speech and hearing problems that I put on the list. Today's lecture deals with the presence of the unusually large deaf population that existed on the Massachusetts island Martha's Vine-yard for about three centuries. From the settlement of the island in the 1640s to the 20th century, the people there, who were descended from only 25 or 30 original families, married mainly other residents of the island. They formed a highly inbred group, producing an excellent example of the genetic patterns for the inheritance of deafness. Indeed in the late 1800 one out of every 25 people in one village on the island was born deaf and the island as a whole had a deafness rate at least 17 times greater than that of the rest of the United States. Even Alexander Graham Bell, the inventor of the tele- phone and a prominent researcher into hearing loss, visited Martha's Vineyard to study the population. But because of the principles of genetics a deaf parent did not always have deaf children. In the 20th century, the local population has mixed the people off the island and the rate of deafness has fallen.

(23)

A．A large number of its residents were deaf.

B．It was settled more than 300 years ago.

C．Each family living there had many children.

D．Alexander Graham Bell visited there.

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第10题

听力原文：The word "okay" is known and used by millions of people all over the world. Still

听力原文： The word "okay" is known and used by millions of people all over the world. Still, language experts do not agree on where it came from. Some say it came from Indian people. When Europeans first came to America, they heard hundreds of different Indian languages. Many were well developed. One tribe especially had a well developed language. They were farmers and fishermen who lived in the rich Mississippi valley in what is now the state of Alabama. When problems arose, the headers of this tribe discussed them with the tribal chief. They sat in a circle and listened to the wisdom of the chief. He heard the different proposals often raising and lowering his head in agreement, and saying, "okeh," meaning, "all is so". The Indian languages have given many words to English. Many American states have Indian names, and so do rivers, streams, mountains, cities and towns.

(30)

A．American Indian.

B．British people.

C．Europeans.

D．African people.

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