听力原文: Many animals recognise their food because they see it. So do humans. When you - 试题答案网问答

第1题

听力原文：Modern zoos are very different from zoos that were built fifty years ago. At that

听力原文： Modern zoos are very different from zoos that were built fifty years ago. At that time, zoos were places where people could go to see animals from many parts of the world.

The animals lived in cages that were made of concrete with iron bars, cages that were easy to keep clean. Unfortunately for the animals, the cages were small and impossible to hide in. The zoo environment was anything but natural. Although the zoo keepers took good care of the animals and fed them well, many of the animals did not thrive; they behaved in strange ways, and they often became ill.

In modern zoos, people can see animals in more natural habitats. The animals are given more freedom in large areas so that they can live more as they would in nature. Even the appearance of zoos has changed. Trees and grass grow in the cages, and streams of water flow through the areas that the animals live in. There are few bars; instead, there is often a deep ditch, filled with water, surrounding an area where several species of animals live together as they would naturally.

(30)

A．Animals lived in cages made of concrete with iron bars.

B．Animals lived in natural environments.

C．Streams of water flew through the cages.

D．Several species of animals lived together.

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第2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3题

听力原文：Good morning, ladies and gentlemen. Welcome to Safari Park. I am Susan; I will le

听力原文： Good morning, ladies and gentlemen. Welcome to Safari Park. I am Susan; I will lead you to visit the park. There are many beautiful animals in the park, and we will see them one after another. Follow me please! First, you'll see the Animals of Asia on your right. Some of them are not strangers to us, but as for many of them, we only heard of them from TV or radio. They are really beautiful. Just pass the Asian animals, you'll find Flamingo Pond. We're sure you'll like the beautiful pink birds. Continue a- long the walkway. On your right, you'll see the wild animals of the North American grassland. After that, it's Monkey Mountain where you'll notice the baby monkeys playing. The baby monkey sitting in the tree is the loveliest one here. Once visitors throw some food to them, he is always the first one to get it. But we'd better not throw food to them, because that will make the park easily dirty. Although the Monkey Mountain is attractive, we can't stay for too long time, because there are many other animals ahead.

What is the speaker？

A．A guide.

B．A visitor.

C．A teacher.

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第4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？

(33)

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5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6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7题

听力原文：M: Every year, as the seasons change, many birds, fish, insects and land animals

start to move. Some travel thousands of kilometers. For many it is for the first time. All of them have one thing in common: they know where they are going and they make no mistakes.

This is migration. There are many things which help animals to migrate. Birds and other animals have a body clock which tells them about changes in temperature and periods of light. Birds and some insects use their eyes to measure and compare the position of the sun from different place.

Many people now believe magnetism is very important. The earth itself is a magnet and every kind of life is affected in some way by its magnetic, fields.

But there are still many questions without answers, for example, the migration of eels. European eels travel down their rivers and into the Atlantic Ocean. They then swim 5600 kilometers to the Sargasso Sea, where they lay their eggs. The eels then die. The baby eels are carried by the Gulf Stream to Europe, a journey which takes two and a half years. They swim back up the rivers. There they live for about ten years before the return journey to the Atlantic. How do they do this？ We know what happens to the eels but not how or why.

"Migration" in this passage means

A．the seasonal moving of creatures.

B．settling down in a new place.

C．the activity controlled by magnetism.

D．knowing where one is going and making no mistakes.

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第8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9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？

(17)

A．Fifteen students.

B．Forty students.

C．Fifty students.

D．Twenty-five students.

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第10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11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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听力原文： Many animals recognise their food because they see it. So do humans. When you