听力原文: Many animals recognise their food because they see it. So do humans. When you

第1题

听力原文：Why do people want to save the Whales？ There are two important reasons. One reaso

听力原文： Why do people want to save the Whales？ There are two important reasons. One reason is that whales help to keep a balance between plants and animals. People have disturbed this balance. People get rid of their wastes by throwing them into the oceans and seas. People's sewage and garbage increase the salt in ocean and sea water. The increased salt helps some plants and some very small animals to grow. These plants and animals can be harmful to fish. Whales eat enormous amount of plants and animals that grow in very salty water. Therefore, whales are very important because they keep the ocean environment clean enough for fish. In addition, because fish provide necessary food for many people, people need whales, and many people want to save them.

(23)

A．Because whales keep a balance between plants and animals on land.

B．Because whales eat a lot of fish.

C．Because whales eat large amounts of garbage.

D．Because whales keep oceans clean for fish, and people need fish.

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第2题

听力原文：Many egg-laying animals merely lay their eggs and leave. Turtles, for instance, a

听力原文： Many egg-laying animals merely lay their eggs and leave. Turtles, for instance, and horseshoe crabs, the eggs hatched and the little ones are their own. The current theory about birds is the earliest birds did just that when they were cold-blooded creatures living in warm places. However, when they became warm-blooded creatures living in cold places, they had to remain on the eggs to keep them warm. For this, they needed a place--a nest. Very likely, the first nest was just a primitive hole scraped in the ground. Even now many species still lay eggs in this sort of crude nest. Primitive nests found on the ground were fine for some birds, but others began to elevate their nests in branches, perhaps to avoid predators. These early elevated nests were probably loose platforms of sticks and dried leaves. The type is still built by some birds today. The latest development in nest, the most recent vision, so to speak, is the cup-shaped nest. This is the one we regard today as the typical bird's nest, you know, like a robin's nest.

(36)

A．Their flying ability improved greatly.

B．They became warm-blooded.

C．They began to lay eggs.

D．They changed their migration patterns.

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第3题

听力原文：Lions are opportunists. They prefer to eat without having to do much work. When r

听力原文： Lions are opportunists. They prefer to eat without having to do much work. When resting in the shade, they are also watching the sky to see what is flying by, and even in the heat of the day they will suddenly start up and run a mile across the plains to find out what is going on. If another animal has made a kill, they will drive it off and take the kill for themselves. A grown lion can easily eat 60 pounds of meat at a single feeding. Often they eat until it seems painful for them to lie down.

The lionesses (the females), being thinner and faster, are better hunters than the males. But the males don't mind. After the kill they move in and take the best share.

Most kills are made at night or just before daybreak. We have seen many, many daylight attempts but only ten kills. Roughly, it's about twenty daytime attempts for one kill.

When lions are hiding for an attack by a water hole, they wait patiently and can charge at any second. The kill is the exciting moment in the day-to-day life of the lion, since these great animals spend most of their time, about 20 hours a day, sleeping and resting.

Lions are social cats, and when they are having a rest, they love to touch each other. After drinking at a water hole, a lioness rests her head on another's back. When walking, young lions often touch faces with older ones, an act of close ties among members of the group.

Questions 29 to 32 are based on the passage you have just heard.

29. Why are lions described as opportunists？

30. What do we learn from the passage？

31. How can we know that lions are social animals？

32. What would be the best title for the passage？

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A．They are cruel animals.

B．They are clever animals.

C．They like to take every chance to eat.

D．They like to take advantage of other animals.

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第4题

听力原文：It was not until one hundred and fifty years ago that scientists learned about th

听力原文： It was not until one hundred and fifty years ago that scientists learned about the existence of dinosaurs. Thanks to an English doctor and his wife, the door was opened to this zoological study. Reasoning that these animals' tremendous size must have made them terrible creatures, scientists combined two Greek words, deimos, meaning terrible, and sauros, meaning lizards, to form. the word dinosaur.

After many years of study, they determined that these beasts roamed the earth for millions of years, and ceased to exist some sixty million years ago.

Unbelievable as it may seem, not all dinosaurs were carnivorous, that is, meat eating. Many were herbivorous, or vegetarians.

By reassembling the bones found at digging sites, scientists have been able to reconstruct the skeletons and learn great deal about the dinosaur's living conditions. They have learned that dinosaurs inhabited not only the land, but also the water and sky.

(33)

A．Beasts.

B．Herbivorous.

C．Carnivorous.

D．Dinosaurs.

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第5题

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

听力原文： Forests are of great importance to our environment because they can absorb carbon dioxide and produce oxygen. They may also provide shelter and food for many different types of plants and animals. Trees are cut down for many reasons but the main reasons are to make space to build new houses and to clear land to grow grass for cows and sheep to eat, to produce dairy foods. The trees being cut down are sold and are made into paper and furniture.

Cutting down trees may have serious effects to the environment. (33)If animals' homes, which are built in and around the trees, are destroyed, many species in the world will become extinct. For example, many different types of animals in South America had disappeared before scientists could learn about them. Cutting down trees also affects the climate. When rain falls on a forest, new clouds will be created. If huge areas of trees are cut down, clouds can not form, rain does not fall and the land becomes drier and drier and finally becomes deserts. (34)And what's more, the carbon dioxide builds up and adds to the global warming which is making the earth become hotter and hotter.

(35)In recent years, to protect the forests, many European countries are planting trees faster than they are cutting them down. Many trees were planted a few years ago to replace woodland and to create forests in areas where there wasn't much wood. We can also help to save forests by reusing and recycling paper.

(34)

A．The loss of natural habitat for many species.

B．Less space for building new homes.

C．Less carbon dioxide and oxygen.

D．Reduced supply of paper and wood.

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第6题

听力原文：Camping can teach you many things, such as how to recognize plants and animals, t

听力原文： Camping can teach you many things, such as how to recognize plants and animals, to set up a tent, and to read a map. Most of all, you can anticipate understanding more about yourself and your place in nature.

Whether you decide to travel on foot into the wilderness, to travel by canoe, or simply to drive to a nearby campground, you are probably looking for some of the same experiences. Most campers hope to find a simpler lifestyle. They tend to forget about work and worries while they enjoy being outdoors;

Because the number of U. S. campers is increasing daily, the National Park Service advises outdoor lovers to remember several things. First, although it encourages campers to enjoy outdoors, it urges everyone to treat nature with respect. That involves leaving your campsite cleaner than you found it. It involves learning to enjoy the natural world of plants and animals without disturbing it. Remember that wild animals are wild, and they can hurt you, just as you can hurt them.

The park service invites you to enjoy and explore the world of nature, but at the same time, it expects you to protect each area you visit so that future generations may look forward to having similar enjoyable experiences.

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A．To learn to recognize plants and animals.

B．To get to know more about yourself and your place in nature.

C．To lean how to make use of a map to find your way in the open air.

D．To learn how to survive in the wildness.

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第7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.

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A．100.

B．500.

C．1,000.

D．1,500.

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第8题

听力原文：In the 19th century it was common to hear people in Europe and America say that t

听力原文： In the 19th century it was common to hear people in Europe and America say that the resources of the sea were unlimited. For example, a noted biologist writing in the mid 1800s commented that all of the great sea-fish industries are inexhaustible. Today there's evidence that the resources of the sea are as seriously threatened as those of the land and the air, and the concern of conservationists now includes sea-fish as well as the African elephant, the Indian tiger and the American eagle. Further, the threat to fish is more alarming in some ways than the threat to birds and land animals because fish are a much needed food resource. Many people throughout the world depend on fish as an important part of their diets, and a decline in the fish supply could have extensive effects on hunger and population.

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A．That they were in infinite.

B．That they should be carefully conserved.

C．That they were declining.

D．That they were limited.

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第9题

听力原文：Many egglaying animals merely lay their eggs and leave. With turtles for instance

听力原文： Many egglaying animals merely lay their eggs and leave. With turtles for instance, the eggs hatch on their own. The current theory about birds is that the earliest birds did just that, when they were coldblooded creatures living in warm places. However when they became warmblooded creatures living in cold places they had to remain on top of the eggs to keep them warm. This process we call incubation. For this they needed a place, a nest very likely the first nests were just primitive depressions scraped into the ground. Even now many species still lay eggs in this sort of crude nest. In fact, every spring a mother killdeer lays her eggs in scene pebbles along the edged the parking lot just outside this building. Primitive nests on the ground were fine for some birds but others began to elevate their nests onto Branches, perhaps to avoid predators. These early elevated nests were probably loose platforms of sticks and twigs, the types still built by ospreys and mostarians today. The latest evolutionary development in nests the most re cent version, so to speak, is the cupshaped nest. This is the one we regard today as the typical bird's nest, you know, like a robin's nest.

(33)

A．How birds' nests have evolved.

B．Why some birds' nests am considered primitive.

C．How birds learn to build nests.

D．Why birds lay eggs.

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第10题

听力原文：M: How many students took the exam last Saturday？W: Well, let me see. Fifty has r

听力原文：M: How many students took the exam last Saturday？

W: Well, let me see. Fifty has registered, but everyone didn't show up, I believe that we had twenty-five from the Middle East and fifteen from Latin America.

Q: How many students did the woman believe had taken the exam？

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A．Fifteen students.

B．Forty students.

C．Fifty students.

D．Twenty-five students.

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第11题

听力原文：Almost all states in America have a state fair. They last for one, two or three w

听力原文： Almost all states in America have a state fair. They last for one, two or three weeks. The Indiana state fair is one of the largest and oldest state fairs in the United States. It is held every summer. It started in 1852. Its goals were to educate, share ideas, and present Indiana's best products. The cost of a single ticket to enter the fair was 20 cents.

During the early 1930's, officials of the fair ruled that the people could attend by paying with something other than money. For example, farmers brought a bag of grain in exchange for a ticket. With the passage of time, the fair has grown and changed a lot, but it is still one of Indiana's most celebrated events. People from all over Indiana and from many other states attend the fair. They can do many things at the fair.

They can watch the judging of the price cows, pigs, and other animals, they can see sheep getting their wool cut, and they can learn how that wool is made into clothing; they can watch cows giving birth. In fact, people can learn about the animals they would never see except at the fair. The fair provides a chance for the farming communities to show its skills and farm products. For example, visitors might see the world's largest apple, or the tallest sunflower plant.

Today, children and adults at the fair can play new computer games, or attend more traditional games of skill. They can watch performances put on by famous entertainers. Experts say such fairs are important, because people need to remember that they're connected to the earth and its products, and they depend on animals for many things.

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A．For people to share ideas and show farm products.

B．For officials to educate the farming community.

C．For farmers to exchange their daily necessities.

D．For farmers to celebrate their harvests.

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听力原文： Many animals recognise their food because they see it. So do humans. When you