阅读理解。 A new study in West Africa shows how farm irrigation systems powered b - 高中英语试题 - 超级试练试题库

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阅读理解。     A new study in West Africa shows how farm irrigation systems powered by the sun can produce
more food and money for villagers. The study in Benin found that solar-powered pumps are effective in
supplying water, especially during the long dry season.
     Sub-Saharan Africa is the part of the world with the least food security. The United Nations Food and
Agriculture Organization estimates that more than one billion of the world"s people faced hunger last year.
Around two hundred sixty-five million of them live south of the Sahara Desert. Lack of rainfall is one of
their main causes of food shortages.
     Jennifer Burney from Stanford University in California led the study. The research team helped build
three solar-powered irrigation systems in northern Benin.The solar-powered irrigation systems produced
an average of nearly two metric tons of vegetables per month.They sold the surplus (过剩的) produce at
local markets. The earnings greatly increased their ability to buy food during the dry season which can last
six to nine months. People in the two villages with the systems were able to eat three to five more serving
of vegetables per day. But making the surplus available at markets also had a wider effect.The study
compared the villages with two others where women farmed with traditional methods like carrying water
in buckets. The amount of vegetables eaten in those villages also increased, though not as much.
     The researchers note that only four percent of the cropland in sub-Saharan Africa is irrigated. Using
solar power to pump water has higher costs at first. But the study says it can be more economical in the
long term than using fuels like gasoline, diesel or kerosene. And solar power is environmentally friendly. 1. People living in sub-Saharan Africa are short of food mainly because ______. A. it seldom rains there throughout the year
B. there is little farmland in the area
C.people there lack experience in farming
D.people know nothing about irrigation techniques 2. Which of the following is an advantage of Jennifer"s irrigation systems? A. They are not affected by the weather.
B. They cost much less than traditional irrigation systems.
C. They have no bad effects on the environment.
D. They use less fuel than traditional irrigation systems. 3. We can learn from the last paragraph that ______. A. people in South Africa will soon be provided with enough food
B. the demand for fuels like gasoline will greatly decrease in Africa
C. people in sub-Saharan Africa don"t take agriculture seriously
D. it"s worthwhile to use the new irrigation systems on the whole 4. People in the two villages owe all the following to Jennifer"s irrigation systems EXCEPT that ______. A. they could buy more food during the dry season
B. they could eat more vegetables than usual every day
C. they could supply local markets with vegetables
D. they could provide people in other villages with food

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试题【阅读理解。 A new study in West Africa shows how farm irrigation systems powered b】；主要考察你对题材分类等知识点的理解。[详细]

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阅读理解。     The need to feed a growing population is putting much pressure on the world"s supply of water. With
97% of the world"s water too salty to be drunk or used in agriculture, the worldwide supply of water needs
careful management, especially in agriculture.
     Although the idea of a water shortage seems strange to someone fortunate enough to live in a high rainfall
country, many of the world"s agricultural industries experience constant water shortages. Although dams
can be built to store water for agricultural use in dry areas and dry seasons, the costs of water redistribution
(重新分配) are very high. Not only is there the cost of the engineering itself, but there is also an environmental
cost to be considered. Where valleys are flooded to create dams, houses are lost and wildlife homes destroyed.
Besides, water may flow easily through pipes to fields, but it cannot be transported from one side of the world
to the other. Each country must therefore rely on the management of its own water to supply its farming
requirements.
     This is particularly troubling for countries with agricultural industries in areas dependent on irrigation. In
Texas, farmers" overuse of irrigation water has resulted in a 25% reduction of the water stores. In the Central
Valley area of southwestern USA, a huge water engineering project provided water for farming in dry valleys,
but much of the water use has been poorly managed.
     Saudi Arabia"s attempts to grow wheat in desert areas have seen the pumping of huge quantities of
irrigation water from underground reserves. Because there is no rainfall in these areas, such reserves can only
decrease, and it is believed that fifty years of pumping will see them run dry. 1. From the first two paragraphs we learn that _______. A. much of the world"s water is available for use
B. people in high rainfall countries feel lucky
C. water can be easily carried through pipes across the world
D. the costs of water redistribution should be considered . 2. Which of the following is true? A. The underground water in Saudi Arabia might run out in 50 years.
B. Most industries in the world suffer from water shortages.
C. The water stores in Texas have been reduced by 75%.
D. Good management of water use resulted from the project in the Central Valley. 3. The text is mainly about _______.A. water supply and increasing population
B. water redistribution and wildlife protection
C. water use management and agriculture
D. water shortages and environmental protection 4. What is most likely to be discussed in the paragraph that follows?A. Approaches to handling the pressure on water supply.
B. Ways to reduce the costs of building dams.
C. Measures to deal with worldwide water shortages.
D. Steps to improving water use management

题型：0128 模拟题难度：| 查看答案

阅读理解。     Modern inventions have speeded up people"s lives amazingly. Motor-cars cover a hundred miles in
little more than an hour, aircraft cross the world inside a day, while computers operate at lightning speed.
Indeed, this love of speed seems never-ending. Every year motor-cars are produced which go even faster
and each new computer boasts (吹嘘) of saving precious seconds in handling tasks.
     All this saves time, but at a price. When we lose or gain half a day in speeding across the world in an
airplane, our bodies tell us so. We get the uncomfortable feeling known as jet-lag; our bodies feel that they
have been left behind in another time zone. Again, spending too long at computer results in painful wrists
and fingers. Mobile phones also have their dangers, according to some scientists; too much use may
transmit
harmful radiation into our brains, a consequence we do not like to think about.
     However, what do we do with the time we have saved? Certainly not relax, or so it seems. We are so
accustomed to constant activity that we find it difficult to sit and do nothing, or even just one thing at a time.
Perhaps the days are long gone when we might listen quietly to a story on the radio, letting imagination take
us into another world.
     There was a time when some people"s lives were devoted simply to the cultivation of the land or the care
of cattle. No multi-tasking there; their lives went on at a much gentler pace, and in a familiar pattern. There is
much that we might envy about a way of life like this. Yet before we do so, we must think of the hard tasks
our ancestors faced: they farmed with bare hands, often lived close to hunger, and had to fashion tools from
wood and stone. Modern machinery has freed people from that primitive existence. 1. The new products become more and more time-saving because _____.A. the manufacturers boast a lot
B. time is limited
C. the prices are increasingly high
D. our love of speed seems never-ending 2. What does "the days" in Paragraph 3 refer to? A. Simple life in the past.
B. Imaginary life.
C. Times of inventions.
D. Time for constant activity. 3. What is the author"s attitude towards the modern technology? A. Critical.
B. Optimistic.
C. Objective.
D. Negative. 4. What does the passage mainly discuss? A. The present and past times.
B. Modern technology and its influence.
C. Imaginations and inventions.
D. Machinery and human beings.

题型：0128 模拟题难度：| 查看答案

阅读理解。     The horsepower was first used two hundred years ago. James Watt had made the world"s first widely
used steam engine. He had no way of telling people exactly how powerful it was, for at that time there were
no units for measuring power.
     Watt decided to find out how much work one strong horse could do in one minute. He called that init one
horsepower. With this unit he could measure the work his steam engine could do.
     He discovered that a horse could lift a 3,300-pound weight 10 feet into the air in one minute. His engine
could lift a 3,300 pound weight 100 feet in one minute.
    Because his engine did ten times as much work as the horse, Watt called it a ten-horsepower engine. 1. Watt made the world"s first _____.A. train
B. engine
C. steam engine
D. bus 2. Watt wanted to find a way _____. A. to lift a 3,300-pound weight
B. to show how useful his steam engine was
C. to tell people exactly how powerful his steam engine was
D. to measure the weight of his steam engine 3. What does one horsepower mean? It means _____. A. one horse"s power
B. what one strong horse can do in one minute
C. what one horse can do in a day
D. what work one horse can do as much as possible 4. Which is not true? A. Watt decided to find out how much work one strong horse could do in one minute.
B. Watt decided to make the world"s first widely used horse engine.
C. He wanted to find a way to tell people exactly how powerful his engine was.
D. He wanted to measure the work his engine could do. 5. The best headline for the article is _____. A. Horsepower
B. Watt"s steam engine
C. A ten-horsepower engine
D. The beginning of horsepower

题型：河北省模拟题难度：| 查看答案

阅读理解。     American Youth Millions of words have been written about young people in the United States. There are
reasons for this great interest in the ideas, feelings, and actions of youth.
     Today there are about seven million Americans in colleges and universities. Young persons under twenty-
five make up nearly half of the American population. Many of these will soon be in charge of the nation.
Naturally their ideas are important to everyone in the country, and it is necessary for older people to understand
what they think and feel.
     College students today have strong opinions about right and wrong. They are deeply interested in making a
better life for all people, especially for those who have not been given a fair chance before now. They see much
that is wrong in the lives of their parents. It is hard for them to see what is right and good in the older ways. As
a result, there is often trouble in American families. Your country may be meeting such problems, too. 1. The meaning of the underlined phrase "make up" is _____.A. 编造
B. 构成
C. 补偿
D. 化妆 2. Which of the statements would the writer probably agree? A. It is unfortunate that so much attention is being paid to young people in the United States.
B. Older people should try to understand the thoughts and feelings of youth.
C. Many problems today are caused by parents who do not control their children.
D. The young people of today are mainly interested in enjoying life. 3. The last sentence says, "Your country may be meeting such problems, too." The phrase "such problems"
    refers most directly to _____. A. crime caused by the use of drugs
B. the newer sexual freedom of youth
C. young people"s dislike of hard work
D. disagreements between young people and their parents

题型：河北省模拟题难度：| 查看答案

阅读理解。     It"s known to us that when we taste delicious food, some people are in hunger. They live a hard life. They are poor and always don"t have enough food to eat.
     Food banks are the organizations to help these poor people. Food banks receive the food from companies or supermarkets, and also from donations from the public. In this way, they collect extra food and give out the food to people who are hungry.
     The first food bank was St. Mary"s Food Bank. It started in 1967 in Arizona. In 1979, it became a larger organization named America"s Second Harvest Network-made up of over 200 food banks across the USA. Each year, the Network provides food for more than 25 million hungry people in the United States, including more than 9 million children and nearly 3 million old people.
      Volunteers are important to food banks. There are many different ways for you to volunteer. You can help out through activities such as:
     *Sorting, boxing and packaging donated food.
     *Tutoring poor kids at your local Kids Café.
     *Transporting or delivering food.
      It"s simple. Take part in it today, and let"s try to make our world without hunger! 1. We can learn from the passage that food banks are _____. A. some special banks
B. some organizations
C. the banks for poor people
D. the banks to receive food 2. What is the meaning of the underlined word"donations"? A. something given
B. extra food
C. the Network
D. volunteers 3. It can be inferred from the last paragraph that _____.A. the author wants to set up another food bank
B. many young people want to become volunteers
C. few people want to become volunteers
D. the author hopes to see more people become volunteers 4. What would be the best title for this passage? A. Help the people in hunger
B. Go to become volunteers
C. Food banks
D. Make our world without hunger

题型：0124 模拟题难度：| 查看答案

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