Rain forests _____and burned at such a speed that they will disappear from the earth in the near future.

A. are been cut　 　 　　B. are cut　 　　　　　 C. are being cut 　　　 D. had been cut

 

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：閱讀理解

The African elephant, the largest land animal remaining on earth, is of great importance to African ecosystem(生態(tài)系統(tǒng)). Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant-eater, it largely shapes the forest- and-savanna(大草原) surroundings in which it lives, therefore setting the terms of existence for millions of other animals that live in its habitat.

It is the elephant’s great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas . In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.

Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well.

What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.

What is the passage mainly about?

A. Disappearance of African elephants.

B. Forests and savannas as habitats for African elephants.

C. The effect of African elephants' search for food.

D. The eating habit of African elephants.

What does the underlined phrase “setting the terms” most probably mean?

A. Fixing the time.                    

B. Worsening the state.

C. Improving the quality.          

D. Deciding the conditions.

What do we know about the open spaces in the passage?

A. They result from the destruction of rain forests.

B. They provide food mainly for African elephants.

C. They are home to many endangered animals.

D. They are attractive to plant-eating animals of different kinds.

According to the passage, which of the following statements is true?

A. The African elephant is the largest animal on earth.

B. African elephants have 300 pounds of plants every day.

C. The African elephant is in a way the builder of the environment like all the other land animals.

D. If the African elephant disappears, the whole ecosystem won’t be affected.

The passage is developed mainly by        .

A. showing the effect and then explaining the causes 

B. pointing out similarities and differences

C. describing the changes in space order          

D. giving examples

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

      There are warm tropical regions all over the globe, but only the Indians of the South American rain forests have formed the habit of sleeping in the open air. Long before they made painful acquaintance (相識) with Europeans, they had invented something that was unique on earth: the hammock.

     Nobody really knows who first had the bright idea of making sleeping in the air the symbol of untroubled rest. The Indians see the hammock as a “gift of heaven (上天)”, something given to them a very long time ago.

      In it the Indians pass away hot noon hours, napping or chatting. Swinging it to and fro (來回?cái)[動(dòng)) creates a cooling breath of air and keeps away insects. They work and play in hammocks, are born and die there.

     Hung like a suspension bridge between heaven and earth, a hammock is dry while the soil is damp and is safe from most wild animals.

      Hammocks have the advantage over beds in that they are easy to transport and take up very little space when they have been rolled up(卷起) . Indians never go on a journey without their hammocks, not even to their plantations.

76.The word hammock in this passage means _______.

A. a suspension cage which can be swung to and fro in the air

B. a seat hanging by two ropes from the branch of a tree

C. a suspension bridge in the South American rain forests.

D. a net hung between two supports and used as a bed.

77. When was the hammock invented and by whom?

A. The Indians had invented the hammock long before they came to South America.

B. The Indians had invented the hammock long before the Europeans came to South America.

C. The Europeans invented the hammock after they made acquaintance with the Indians.

D. The Europeans had invented the hammock before they went to South America.

78. Indians swing the hammock to_______.

A. pray to heaven for a gift       B. keep away flies, mosquitoes and other insects

C. keep away wild animals        D. all asleep quickly

79. According to the passage, hammocks _______.

A. cannot be rolled up                B. are difficult to transport

C. are never brought to the plantations   D. can be kept dry while the ground is wet

80. The passage is about _______.

A. the Indian way of living                      B. tropical regions

C. Indians' gift for the Europeans           D. a portable bed

查看答案和解析>>

科目：高中英語 來源：2013屆甘肅省高二下學(xué)期期中考試英語試卷（解析版） 題型：閱讀理解

The African elephant, the largest land animal remaining on the earth, is of great importance to African ecosystem(生態(tài)系統(tǒng)). Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant-eater, it largely shapes the forest-and-savanna(大草原) surroundings in which it lives, therefore setting the terms of existence for millions of other animals that live in its habitat.

It is the elephant’s great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas(熱帶草原). In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.

Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well.

What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.

1.What is the passage mainly about?

A．Disappearance of African elephants.

B．Forests and savannas as habitats for African elephants.

C．The effect of African elephants’ search for food.

D．The eating habit of African elephants.

2.What does the underlined phrase “setting the terms” most probably mean?

A．Fixing the time.

B．Worsening the state.

C．Improving the quality.

D．Deciding the conditions.

3.According to the passage, which of the following statements is TRUE?

A．The African elephant is the largest animal on the earth.

B．African elephants have 300 pounds of plants every day, including small trees and underbushes.

C．The African elephant is in a way the builder of the environment like other land animals.

D．If the African elephant disappears, the whole ecosystem won’t be affected.

4.The passage is developed mainly by            .

A．showing the effect and then explaining the causes

B．pointing out similarities and differences

C．describing the changes in space order

D．giving examples

 

查看答案和解析>>

科目：高中英語 來源：新疆農(nóng)七師高級中學(xué)2009-2010學(xué)年度高二下學(xué)期第二階段考試英語試題 題型：閱讀理解

 

    A German company was concerned about talks in Moscow trying to sell some 100 million dollars worth of equipment to a Russian State company. Talks went smoothly but differences remained. So Martin Bayer himself, the CEO of the German Company, decided to come to Moscow to head the talks. Besides caring about his business, the CEO wanted to go to Russia to hunt bears.

    Martin Bayer was one of the greatest hunters of our time (and the Russians knew about it). He went to the Sahara more than hundred times and hunted lions, crocodiles; he hunted polar bears in the North Pole and tigers in the rain forests of India. But he had never hunted Russian bears.

    So the Russians decided to organize a bear hunt for Mr. Bayer to sweeten the talks. This wasn't a simple task. Some people in the west still believe that bears may be found and seen everywhere in Russian cities just like squirrels may be seen in our back yards. This is not true. The closest place one may find bears in the wild is maybe 2,500 miles away from Moscow. However, a solution was quickly found. The Russian businessmen went to Moscow Circus（馬戲團(tuán)）and for $2,000 bought a very old bear. This bear used to amuse and amaze audiences in many countries for 30 years, but got and looked too old, and was retired.

    “Be careful, the Russian bears are very dangerous, and frightening,” they told to Mr. Bayer. “If compared to the Russian bears, your African lions are nothing more than harmless cats.” The bear was brought to a forest 50 miles from Moscow and was left there. Mr. Bayer was told that bears were plentiful in that forest and that many cattle and even people had been eaten in the surrounding villages.

    Meanwhile, an 18-year old female drove through the forest on a motorcycle and suddenly saw a bear (no bears had been seen in those places for 200 years). She was frightened, fell, left her helmet and her motorcycle and ran away.

    Mr. Bayer was excited and ready to hunt. This could become the most successful part of his extraordinary hunting experience. The next moment Mr. Bayer saw a bear in a helmet driving on a motorcycle through the forest in front of him. The bear had a happy expression on his face, as he was doing something he had been doing in the circus for 30 years: circling on a motorcycle!

    Mr. Bayer lives in a private mental institution near Hamburg happily ever after. The equipment was never sold to Russia. It was sold to Iraq instead.

1. Why did the Russians invite Mr. Bayer to hunt bears?

         A. Russian bears are famous for their cruelty.

         B. They managed to find a bear for hunting.

         C. They expected the trade to be successful.

         D. There was a bear in Moscow Circus.

2. Why did the Russians say “Be careful, the Russian bears are very dangerous, and frightening”?

         A. To tell Mr. Bayer that many people had been killed by bears.

         B. To make Mr. Bayer feel the hunting really challenging.

         C. To warn Mr. Bayer to mind his safety while hunting.

         D. To tell Mr. Bayer that the bear is really dangerous.

3. We can infer from the last paragraph that __________.

         A. Mr. Bayer has gone ma   

B. the bear injured him badly

         C. he has worked in a mental institution since then

         D. the trade has gone smoothly between Russian and Iraq

4. Which would be the best title of the passage?

         A. Mr. Bayer, a Brave Hunter        B. Russian Bears, Dangerous Animals

         C. Don’t Hunt in Russia         D. Don’t Deal with the Russians

 

查看答案和解析>>

科目：高中英語 來源：2007年高考遼寧卷英語試題 題型：閱讀理解

Most rain forests lie close to the equator(赤道),where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above,causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet,warm world with plenty of sunlight is perfect for plants to grow,so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds,which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts,keeping temperatures fit for plant growth.

Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the “monsoon forest”.

Another type of rain forest grows on tropical mountains.It is often called the “cloud forest” because clouds often hang over the trees like fog.

The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals’ stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.

1.The climate of the rain forests near the equator is _______.

A．mild,wet and windy

B．hot,rainy and foggy

C．hot,wet and cloudy

D．warm,wet and sunny

2.We can learn from the passage that _______.

A．tree leaves are green all the time in the monsoon forest

B．there is a dry season in the cloud forest on tropical mountains

C．clouds help the plants in the rain forest near the deserts to grow

D．the formation of climate in the rain forest has little to do with the trees

3.According to the passage,_______ play the most important role in the spreading of seeds.

A．a(chǎn)nimals

B．droppings

C．fruits

D．winds

4.This passage is most likely to be found in _______.

A．a(chǎn) travel guide

B．a(chǎn) story book

C．a(chǎn) technical report

D．a(chǎn) geography book

 

查看答案和解析>>

同步練習(xí)冊答案