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A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of the world’s poor, finding a good way to keep food cool is difficult. Refrigerators are costly and they need electricity.
Yet spoiled food not only creates health risks but also economic losses. Farmers lose money when they have to throw away products that they cannot sell quickly.
But in nineteen ninety-five a teacher in northern Nigeria named Mohammed Bah Abba found a solution. He developed the “Pot-in-Pot Preservation/Cooling System.” It uses two round containers made of clay. A smaller pot is placed inside a larger one. The space between the two pots is filled with wet sand. The inner pot can be filled with fruit, vegetables or drinks. A wet cloth covers the whole cooling system.
Food stored in the smaller pot is kept from spoiling through a simple evaporation(蒸发) process. Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.
The evaporation process creates a drop in temperature of several degrees. This cools the inner pot and helps keep food safe from harmful bacteria. Some foods can be kept fresh this way for several weeks.
People throughout Nigeria began using the invention. And it became popular with farmers in other African countries. Mohammed Bah Abba personally financed the first five thousand pot-in-pot systems for his own community and five villages nearby.
In two thousand, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise. This award recognizes people trying to develop projects aimed at improving human knowledge and well-being. A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history. Winners receive financial assistance to help develop and extend their projects.
小题1:Which is the best title of the passage?
A.A Few Degrees can Make a Big Difference for Storage
B. A Cool Way to Keep Food from Spoiling
C. Spoiled Food Creates Health Risks and Economic Losses
D. The Evaporation Process Creates a Drop in Temperature
小题2:What does the third paragraph mainly talk about?
A.the structure of the invention
B.the usage of the invention
C.the cost of the invention
D.the inspiration of the invention
小题3:What is it that essentially keeps the food in the container from spoiling?
A.the wet cloth covering the cooling system.
B.the moving drier air outside the container
C.the wet sand between the containers
D.a drop in temperature by evaporation
小题4:According to the passage, where can we possibly see the invention?
A.rich and advanced families
B.scientific experiment laboratory
C.poor and underdeveloped area
D.supermarket needing to store goods
小题5:We can know from the passage that Mohammed Bah Abba ____________.
A.invented the controversial cooling system
B.financed the systems in all communities
C.received financial assistance for his invention
D.invented more complicated cooling system later

答案

小题1:B
小题2:A
小题3:D
小题4:C
小题5:C
解析

试题分析:文章介绍了穆罕默德巴林神父发明的“罐内冷却系统”的储藏食物的方法。他利用两个套在一起的罐子中间的湿沙子蒸发水分降温的原理来保存食物。这一发明还获得了瑞士的劳力士公司授予他的“劳力士雄才伟略大奖”。
小题1:主旨题,通过阅读全文可知本文介绍了一种降温方法来防止食物腐坏。故选B。
小题2:推理题,阅读第三段可知介绍了这种发明的组成和原理。故选A。
小题3:推理题。根据第五段中“The evaporation process creates a drop in temperature of several degrees.”蒸发的过程会产生几度的温度下降,根据常理可知降低了温度会使食物保鲜。故选D。
小题4:推理题,阅读文章可知这个发明最初是在尼日利亚北部的人们使用,后整个尼日利亚人们都是用,再后来还在其他非洲国家的农民中流行起来,由此可知是在不发达地区和穷人中运用。故选C。
小题5:推理题,根据文章最后一句“ Winners receive financial assistance to help develop and extend their projects.”获奖者会获得财务援助以帮助开发和扩大他们的项目。根据文章可知穆罕默德巴林神父也获得这个奖项,因此可知穆罕默德巴林神父获得对他的发明的财务支持。故选C。
核心考点
试题【A few degrees can make a big difference when it comes to food storage. Foods can】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Modern inventions have speeded up people"s lives amazingly. Motor cars cover a hundred miles in light 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 computers results in painful wrists and fingers. Mobile phones also                   , according to some scientists;too much use may put 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(耕耘) 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 make tools from wood and stone. Modern machinery has freed people from that primitive existence.
小题1:What"s the passage mainly about?(within 10 words)
                                                                       
小题2:List the difficulties our ancestors met according to the text.(within 15 words)
                                                                      
                                                                      
                                                                      
小题3:Fill in the blank in the 2nd paragraph with proper words or phrases.
                                                                       
小题4:Why do we make new products more and more time-saving according to Paragraph 1 of this passage?
                                                                       
小题5:Translate the underlined sentence in the 3rd paragraph into Chinese.
                                                                       
                                                                       
题型:不详难度:| 查看答案
The Pacific island nation of Nauru used to be a beautiful place. Now it is an ecological(生态的) disaster area. Nauru’s heartbreaking story could have one good consequence — other countries might learn from its mistakes.
For thousands of years, Polynesian people lived the remote island of Nauru, far from western civilization. The first European to arrive was John Fearn in 1798. He was the British captain of the Hunter, a whaling ship. He called the island Pleasant Island.
However, because it was very remote, Nauru had little communication with Europeans at first. The whaling ships and other traders began to visit, bringing guns and alcohol. These elements destroyed the social balance of the twelve family groups on the island. A ten-year civil war started, which reduced the population from 1,400 to 900.
Nauru’s real troubles began in 1899 when a British mining company discovered phosphate (磷酸盐)on the island. In fact, it found that the island of Nauru was nearly all phosphate, which a very important fertilizer for farming. The company began mining the phosphate.
A phosphate mine is not a hole in the ground; it is a strip mine(带状矿). When a company strip-mines, it removes the top layer(层) of soil. Then it takes away the material it wants. Strip mining totally destroys the land. Gradually, the lovely island of Nauru started to look like the moon.
In 1968, Nauru became one of the richest countries in the world. Every year the government received millions and millions of dollars for its phosphate.
Unfortunately, the leaders invested the money unwisely and lost millions of dollars. In addition, they used millions more dollars for personal expenses. Soon people realized that they had a terrible problem — their phosphate was running out. Ninety percent of their island was destroyed and they had nothing. By 2000, Nauru was financially ruined. Experts say that it would take approximately $433,600,000 and more than 20 years to repair the island. This will probably never happen.
小题1:What might be the author’s purpose in writing the text?
A.To seek help for Nauru’s problems.B.To give a warning to other countries.
C.To show the importance of money.D.To tell a heartbreaking story of a war.
小题2:What was Nauru like before the Europeans came?
A.Rich and powerful. B.Modern and open.
C.Peaceful and attractive. D.Greedy and aggressive.
小题3:The ecological disaster in Nauru resulted from           .
A.soil pollutionB.phosphate over mining
C.farming activity D.whale hunting
小题4:Which of the following was a cause of Nauru’s financial problem?
A.Its leaders misused the money.B.It spent too much repairing the island.
C.Its phosphate mining cost much money.D.It lost millions of dollars in the civil war.
小题5:What can we learn about Nauru from the last paragraph?
A.The phosphate mines were destroyed.B.The leaders will take the experts’ words seriously.
C.The island was abandoned by the Nauruans.D.The ecological damage is difficult to repair.

题型:不详难度:| 查看答案
 Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don’t agree with them.
Waste can bring a lot of problems. Although China is rich in some resources(资源), we are short of(缺乏) others, for example, fresh water(淡水). It is reported that we will have no coal(煤) or oil to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move? Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.
In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps(水龙头) when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day, if we do our best.
小题1:From the passage we know that some students often _______ in the school.
A.eat too muchB.don’t work hardC.waste thingsD.throw rubbish everywhere
小题2:Which is not mentioned in this passage?
A.Fresh water.B.Forest.C.Oil.D.Coal.
小题3:What may happen in 100 years?
A.We may still have enough oil.B.We may still have enough coal.
C.We may have a little oil.D.We may have no coal or oil to use.
小题4:Which is the best title of this passage?
A.Stop WastingB.School life
C.Waste in the SchoolD.Rich Resources in China

题型:不详难度:| 查看答案
The relationship between humans and animals has always been complex. Some cultures have developed entire belief systems around favored animals. Even in cultures with less formal belief systems, connections between people and animals still lead to commonly accepted opinions about animals.
These belief systems usually develop around the animals that interact (互动) with humans most frequently. Therefore, it should not be surprising that so many stories surround the most common of animals: rats. Rats live side by side with humans all over the world and regularly interact with people. Human-rat coexistence may be common all around the world, but different cultures respond to that closeness in different ways.
In the United States and Europe, one typical attitude is that the rat is a pest. This could be due to the common belief that rats spread disease. Actually, they don’t, at least not directly, but many people don’t know that. The Pied Piper of Hamlin, a well-known children’s story, is one example of how rats have been described in Western literature: in that story, rats cause such a problem that a town has to hire a piper to call them all away.
In many Latin American countries, the rat is described in a very different way. The story of the tooth fairy (a fairy believed by children to leave money while they sleep in exchange for a tooth that has come out) is common all over the world, but in Latin America, the “fairy” is a rat! Rats do have very strong teeth, which could explain the association. Clearly, this shows another attitude toward rats that is much more positive.
Yet another attitude toward the rat can be seen in the Chinese Zodiac (生肖). The Rat is one of the animals of the Zodiac. Like the other zodiac animals, the Rat is neither entirely good nor entirely bad. It’s described as clever and friendly, but also tricky and not entirely honest. That may be the most accurate description of the rat so far. Whether you like rats or not, it’s hard to deny their reputation for cleverness.
As many people are discovering these days, rats can even make excellent pets, so long as you remember to close the cage carefully!
小题1:What does the passage mainly talk about?
A.A trend of keeping rats as pets.
B.How different cultures look at rats.
C.How humans get along with animals.
D.Favored animals in different cultures.
小题2:The rats in The Pied Piper of Hamlin appear______.
A.unpleasantB.honestC.smartD.unusual
小题3:The tooth fairy in Latin America mentioned in Paragraph4 is to show______.
A.the tooth fairy is lovely
B.rats look very frightening
C.rats are welcome in Latin American countries
D.the story of the tooth fairy is common all over the world
小题4:According to the author, rats______.
A.don’t spread disease
B.should be treated as pests
C.are fairly described in the Chinese Zodiac
D.are kept as pets by more and more people
小题5:The passage is probably taken from a ______.
A.travel guideB.news reportC.nature magazineD.history textbook

题型:不详难度:| 查看答案
Life on Mars could become a reality and it could happen in your lifetime.
A welcoming planet
Scientists say Earth’s neighbor Mars, a bright red planet about half Earth’s size, is the most likely to support human life. Mars even has frozen water on its surface.
Since the late 1990s, NASA has been exploring Mars using remote-controlled vehicles(装置). Most recently Curiosity, a car-size vehicle, traveled through space on an unpiloted spacecraft(航天器) and landed on Mars in August 2012. Directed by NASA scientists , the vehicles move on the surface, taking pictures , collecting and analyzing soil, and looking for signs of life.
But what about human explorers? Plans are already in the works to send astronauts to Mars as soon as the mid-2030s.
_____________________________________
But before you start packing your bags, let’s consider the challenges. For starters, Mars is far away. Just getting there could take up to 10 months.
Scientists already know that time away from Earth’s gravity harms the human body. Bones and muscles get weaker. The body produces less blood. What damage would months and months of living in space do?
And then there is the matter of water, oxygen, food and fuel. Scientists will have to find solutions to these problems, or the first humans on Mars won’t survive very long in their new home.
Tiny Dangers
There’s another tinier risk. It’s so tiny that you can’t even see it: germs.
Some scientists believe that our germs could pollute the whole planet of Mars. Potentially killing Martian life before we have the chance to discover it. Worse, there is a small but terrifying chance that any microscopic life already there might be harmful to us .
Worse still, if any of those Martian germs(火星细菌) were brought back to Earth, the result could be disastrous. Animals, plants, and people could be wiped out.
Worth the $$$?
A more practical concern is the cost. The price could approach $ 1 trillion(万亿). How can we justify spending that much when so many problems—poverty, disease—could use the cash here on Earth?
小题1:Which of the following is TRUE according to the “A welcoming planet” part?
A.Mars is a little bigger than Earth.
B.There are flowing rivers on Mars.
C.People haven’t been to Mars so far.
D.Scientists have discovered signs of life on Mars.
小题2:Which of the following can best fill in the blank in the passage?
A.Living in space.B.Limited resources.
C.Extreme conditions.D.Interesting challenges.
小题3:By “Tiny dangers” the author means ________________.
A.there is no serious danger
B.people won’t be in any danger
C.it’s difficult for people to realize the danger
D.the danger may be caused by very small things
小题4:Which may cause the biggest danger?
A.Martian germs may be different from those on Earth.
B.Martian germs may be brought back to Earth.
C.People may carry germs to Mars.
D.There may be germs on Mars.
小题5:Which section of a newspaper is the passage most probably taken from?
A.PeopleB.HistoryC.ScienceD.Business

题型:不详难度:| 查看答案
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