阅读理解 Soil conservation efforts protect soil from wind and water that can blow or wash it away. Good soil produces food crops for both humans and animals. One important form of soil conservation is th 题目和参考答案——青夏教育精英家教网—

题目内容

阅读理解

　　Soil conservation(保护) efforts protect soil from wind and water that can blow or wash it away. Good soil produces food crops for both humans and animals. One important form of soil conservation is the use of windbreaks. Windbreaks stop the wind from blowing soil away. They also keep the wind from destroying or damaging crops. Windbreaks are barriers formed by trees and other plants with many leaves. Farmers plant windbreaks in lines around their fields. They are very important when grains such as wheat are grown. Windbreaks are effective when a wall of trees and other plants blocks the wind. The windbreaks should also limit violent motions of the wind to those areas closest to the windbreak.

　　Windbreaks seem to work best when they fallow a little wind to pass through. If the wall of trees and plants stops wind completely, then violent air motions will take place close to the ground. These motions cause the soil to lift up into the air where it will be blown away. For this reason, a windbreak is best if it has only 60 to 80 per cent of the trees and plants needed to make a solid line. An easy rule to remember is that windbreaks can protect areas up to ten times the height of the tallest trees in the windbreak. There should be at least two lines in each windbreak. One line should be large trees. The second line, right next to it, can be formed from shorter trees and other plants with leaves. Windbreaks not only protect land and crops from the wind. They can also provide wood products. These include wood for fuel and longer pieces for making fences. Locally-grown trees and plants are best for windbreaks.

1．Which of the following statements is NOT true?

[　　]

A．A windbreak increases violent motions of the wind.

B．A windbreak stops the wind from destroying the crops.

C．A windbreak provides wood products for fuel and other purposes.

D．A windbreak is a form of soil conservation.

2．Why should windbreaks allow a little wind to pass through?

[　　]

A．So as to prevent violent air motions taking place.

B．So that the crops can breathe enough fresh air.

C．So as to save a lot of money by planting fewer trees.

D．Because a little wind helps the crops grow better.

3．10-metre-high windbreak can protect crops as far as _____ metres away.

[　　]

A．60-80　　　B．100

C．10　　　　 D．50

4．The passage is mainly about _____.

[　　]

A．soil conservation　　B．crops and winds

C．windbreaks　　　　D．how to plant trees

答案：A;A;B;C
解析：

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相关题目

　　Australia, the last continent, was discovered by ships belonging to some European nations in the seventeenth century. These nations were less interested in changing it into a colony（殖民地）than in exploring(勘探)it. As in the early history of the United States, it was the English who set up the settlements（新拓居地）in Australia. This history and the geography of these two British colonies have some other things in common as well.

　　Australia and the United States are about the same in size, and their western lands are both not rich in soil, It was the eastern coast of Australia and America that the English first settled, and both colonies soon began to develop towards the west. However, this westward movement took place more because the English were searching for better land than because the population was increasing. Settlements of the western part of both countries developed quickly after gold was discovered in America in 1849 and in Australia two years later.

　　Although the development of these two countries has a lot in common, there are some striking differences as well. The United States gained its independence from England by revolution while Australia won its independence without having to go to war. Australia, unlike the United States, was firstly turned into a colony by English prisoners and its economic development was in wheat growing and sheep raising. By 1922, for example, Australia had fifteen times more sheep than it had people, or almost half as many sheep as there are people today in the United States. Yet, in spite of these and other main differences, Australia and the United States have more in common with each other than either one has with most of the rest of the world.

1. Who turned Australia into a colony? ______ .

[ ]

A. Britain B. Several European countries

C. The United States of America D. None of the above

2. In the early history of America and Australia, both colonies developed towards the west firstly for the reason that ______ .

[ ]

A. the population was increasing rapidly in the east

B. the English thought there might be richer land there

C. gold was discovered there

D. fewer people lived there

3. In the early 1920s, ______ .

[ ]

A. Australia had one fifteenth as many people as sheep

B. there were more sheep in Australia than in the United States

C. the population in Australia was greater than that of the United States

D. the United States had twice as many sheep as people

4. Australia, unlike the United States, ______ .

[ ]

A. won its independence by peaceful means

B. did not discover gold until the sate 1840s

C. was the last and biggest continent to be discovered

D. was not rich in gold in its western part

5. The last sentence in the last paragraph “…Australia and the United States have more in common with each other than either one has with most of the rest of the world” means“ ______ ”.

[ ]

A. The United States and Australia do not have any main differences

B. The United States and Australia have much more in common than they have with other countries.

C. The United States and Australia have nothing in common with the rest of the world

D. In common with the rest of the world, the United States and Australia have a lot of differences.

阅读理解：

　　Look at the rock, and what do you see? Something to build with? Some-thing to eat or wear or keep you warm? Could it once have been an animal or a plant? Does it make you think of treasures hidden under the ground? No? Yet rocks are all these things.

　　The soil in which we grow our food is made up of rock worn down by weather. The salt we put on our food comes from halite. Halite is a natural mineral found as rock.

　　Have you seen walls of limestone(石灰石) in some buildings? Limestone is made up of plants and skeletons（骷髅）of sea creatures that died long ago. The coal that keeps some of us warm in winter comes from plants that lived millions of years ago.

　　Gold and silver and diamonds are called treasures. They are dug from rock. But these are not our only treasures. When you look at a rock, you may see many more of the treasures of our earth.

1．Rocks were once ______.　　　

[　　]

A．something to build with　　　B．something to eat

C．an animal or a plant　　　D．all of the above

2．The word in this story that means “not seen or kept out of sight” is ______.

　[　　]

A．dug　　　B．hidden

C．call　　　D．under

3．Soil is rock worn down by ______.

　　　[　　]

A．minerals　　　　　　　　　　　B．salt

C．rain, wind and the sun　　　　D．light

4．The story does not say this, but from what we have read, we can tell that ______.

[　　]

A．coal comes from old limestone

B．all rocks are made of salt

C．there are many kinds of rocks

D．gold, silver and diamonds are our only treasures

5．The main idea of the whole story is that ______.

[　　]

A．men use rocks in many different ways

B．rocks are not very important to man

C．all rocks are hidden under the ground

D．all our treasures are hidden under the ground

阅读理解：

　　In Europe, men do not usually wear skirts. But the Scottish national clothing for men is a kind of skirt. It is called a kilt. The Scottish like to be different. They are also proud of their country and its history, and they feel that the kilt is part of that history. That's why the men still wear kilts at traditional (传统的) dances and on national holidays. They believe they are wearing the same clothes that Scottish men always used to wear.

　　That's what they believe. However, kilts are not really so old. Before 1730, Scottish men wore a long shirt and blanket around their shoulders. These clothes got in the way when the men started to work in factories. So, in 1730 a factory owner changed the blanket into a skirt; the kilt. That's how the first kilt was made.

　　Then, in the late 1700s Scottish soldiers in the British Army began to wear kilts. One reason for this was national sentiment ( = feelings) . The Scottish soldiers wanted to be different from the English soldiers. The British Army probably had a different reason. A Scottish soldier in a kilt was always easy to find! The Scottish soldier fought very hard and became famous. The kilt was part of the fame, and in the early 1800s men all around Scotland began to wear kilts.

　　These kilts had colorful stripes (条纹) going up and down and across. In the 1700s and early 1800s, the color of the stripes had no special meaning. Men sometimes owned kilts in several different colors. But later the colors became important to the Scottish families. By about 1850, most families had special colors for their kilts. For example, men from the Campbell family had kilts with green, yellow and blue stripes. Scottish people often believe that the colors of the kilts are part of their family history. In fact, each family just chose the color they liked best.

　　This is not the story you will hear today if you are in Scotland. Most Scottish people still believe that kilts are as old as Scotland and that the colors are as old as the Scottish families. Sometimes feelings are stronger than facts!

1．This text is mainly about ________.

A．soldiers' clothes in Britain

B．the history of Scotland

C．a special kind of skirt

D．Scottish families

2．Which of the following is true according to the passage?

A．The English soldiers were the first to wear kilts.

B．It was hard then to tell the Scottish soldiers from the English ones apart from the clothes.

C．Colors were specially designed in the first kilts.

D．The factory owner made the first kilt from long shirts to make his workers different from others.

3．Scottish soldiers were dressed in kilts partly because of ________.

4．The colors of the kilts are ________.

[　　]

A．not part of the Scottish family history

B．older than the Scottish family history

C．for the Campbell family only

D．mainly green, yellow and blue

5．From the last paragraph we can infer that ________.

[　　]

A．the European people are full of strong feelings

B．there are no stories about kilts in Scotland today

C．the British like to do things on feelings, not on facts

D．the Scottish prefer to keep their tradition rather than believe the fact

阅读理解：

　　If you want to keep your land fertile (肥沃), you must try to stop soil from being washed away by water or winds. When soil is taken away by running water or blowing winds, we call it soil erosion. Ways have been found to stop soil erosion and this is known as soil conservation (保持).

　　One way of stopping soil erosion is to grow small plants such as grasses. These plants are called cover crops, whose roots (根) hold the soil tightly together. It's difficult for rain water to wash away the soil. When trees and bushes (矮树丛) are planted at the edges of an open field, soil erosion by strong winds cannot take place easily. The trees and bushes, which act as a very big and strong wall, protect the open land from the winds. The way to stop soil erosion on slopes (斜坡) is to build terraces (梯田) on the slope of hillside.

　　When the slope of a hillside is cut into “stairs”, water carrying soil cannot run straight down the terraces, which are used to slow down the speed of the falling water containing much soil in it. In this way most of the soil in the water is left behind on the terraces.

1．What takes place in soil erosion?

[　　]

A．Flood happens to the fertile land.

B．A large quantity of earth is carried away by water or winds.

C．Terraces are built on the slope of hillside.

D．Plants are grown to protect the open land.

2．The underlined words in this passage means “________”.

[　　]

A．grass roots

B．trees and bushes

C．small and low plants, such as grasses, to protect soil from being eroded away

D．covering plants that produce grain or vegetables

3．Trees and bushes are planted around an open field

[　　]

A．because their roots hold soil tightly

B．to prevent soil from being blown away by winds

C．to stop soil from being washed away

D．to keep soil wet

4．Which of the following can be used as the best title for the passage?

[　　]

A．What Causes Soil Erosion?

B．The Importance of Conservation

C．Rain Erosion and Wind Erosion

D．Erosions and Ways to Fight It

5．Grasses, bushes, trees and terraces ________.

[　　]

A．can stop soil erosion

B．can stop soil from being washed away only

C．is called soil conservation

D．can stop soil from being blown away only

阅读理解

Recycling

　　Increased population increases the need for natural resources and also increases waste products. Making a new useful product out of a waste product decreases(reduces)our need for natural resources. Recycling means using something over again after it has been used once.

　　Have you ever seen a piece of recycled paper? About one third of all the paper products made each year are made from waste paper. For example, recycled paper is usually used to make paper sacks. Recycling paper, such as newspapers, reduces the number of trees that must be cut each year to make new paper.

　　Each person wastes a lot of solid(固体的)waste. In the United States, the average(平均)is eight kilograms of waste per person each day. Most of the waste is rubbish. Finding places to dispose(处理)of solid waste is a major problem.

　　In many cities solid wastes are collected and the rubbish is burned in incinerator plants(焚化场). Air pollution control devices(设备)are used to prevent pollution. Heat produced in the burning may be used to produce electricity. Waste that is not burned is taken to a dump(垃圾堆). One kind of dump for the disposal of solid wastes is a sanitary landfill(废渣处理池). This method involves(包含)burying the wastes and bulldozing(平整)the soil over them. Parks, baseball fields, airports, and other developments may be built on completely filled landfills.

　　Recycling solid wastes decreases our need for methods of disposal. The metal in broken cars can be recycled and made into new steel. Worn-out rubber tires can be turned into new ones and used again. Plastics and other rubber products can be recycled. Metal cans and glass bottles can also be recycled. Increased recycling can help meet the increased demand for natural resources.

　　By recycling resources, people imitate(模仿)nature. Elements(元素)important to life are naturally recycled. Nothing lasts forever. Wood decays(腐烂), iron rusts(生锈), and concrete(混凝土)is worn away by wind and rain. All natural resources used by people finally go back into the air, water, and earth.

1．What is the main cause of the increased waste, according to the passage?

[　　]

A．Increased size of cities.

B．Development of the paper-making industry.

C．Increased population.

D．Being short of recycling methods.

2．According to the passage recycling paper is important because ________.

[　　]

A．better paper sacks can be made out of waste paper

B．the prices of new paper are very high

C．trees are no longer available(可获得的)in the developed countries

D．more trees on earth can be saved

3．A big problem of solid waste disposal is that ________.

[　　]

A．solid wastes are poisonous

B．it is difficult to find places to dispose of solid wastes

C．the disposal process is too backward

D．we don't have enough manpower to dispose of solid wastes

4．Which of the following can NOT be called recycling?

[　　]

A．Making new paper from used paper.

B．Using worn-out rubber tires to make new ones.

C．Burying metal cans and glass bottles.

D．Producing new steel from metal in broken cars

5．What is the writer's attitude towards recycling?

[　　]

A．The writer thinks that recycling is necessary and important.

B．The writer thinks it is no use recycling.

C．The writer doubts whether recycling is useful to people.

D．The writer thinks that it is a waste of time and money recycling.

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