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Seth DeBolt is a plant scientist at the University of Kentucky US. He and other scientists wanted to find a source of fuel that poor people in rural areas of developing countries could use to make electricity.
The United Nations Development Program says a billion and a half people have no electricity. A billion others have an undependable supply.
Professor DeBolt went on a study trip to rural Indonesia. He saw that there was very little waste in the use of agricultural products. Everything that farmers grew was used for something. Even the remains of fruit that people did not eat were fed to chickens.
Little waste meant there was little that could be used for fuel. Growing a separate fuel crop would take land away from food crops. That was something Professor DeBolt did not want to do.
DeBOLT said, "The people at most risk with respect to energy poverty, typically they"re the same people who have food insecurity issues as it is. And then any change in availability would be most damaging to that group of people."
But he found one item that was in plentiful supply and would not create competition between food and fuel. Coconut shells are generally thrown out. Yet Professor DeBolt says it has an "excellent" heating value. All someone needs is a way to release that energy.
DeBolt says he and his team see possibilities for coconut power. "Coconuts are growing here and these are the areas where there is possibility for energy poverty to be eased at least in part by these small-scale production systems."
The researchers say these systems could provide as much as thirteen percent of the energy needs of a country like Indonesia. Other tropical countries with large crops of coconuts and similar fruit could benefit, as well.
But DeBolt says this is not a perfect solution. There are technical questions, like how to safely deal with the dangerous waste produced in the process. And there needs to be money to get these projects started.
小题1:Professor DeBolt went on a study trip to rural areas of developing countries to      .
A.help farmers make full use of waste
B.seek certain materials to make electricity
C.persuade farmers to grow more coconuts
D.find a suitable place to carry out the experiment
小题2:DeBolt thought it was not a good idea to grow fuel crops because      .
A.there are plenty of coconuts
B.local farmers have no interest in it
C.it would make food problems worse
D.fuel crop has little use for local farmers
小题3:The last two paragraphs mainly tell us that coconut power      .
A.needs further experiments and efforts
B.can help solve energy problem perfectly
C.will cause technique and money problems
D.has drawn Indonesia"s government attention
小题4:What might be the best title for the passage?
A.Make Full Use Of CoconutsB.Make Power From Coconuts
C.A Perfect SolutionD.Food And Energy Problems

答案

小题1:B
小题2:C
小题3:A
小题4:B
解析
本文讲述了科学家要在农村找到一种可以发电的植物且不占用农田。随后发现椰子树就是这样一种植物。但椰子树也有它的缺点。
小题1:B 细节题。根据第一段He and other scientists wanted to find a source of fuel that poor people in rural areas of developing countries could use to make electricity.可知答案为B。
小题2:C 细节判断题。根据Growing a separate fuel crop would take land away from food crops. That was something Professor DeBolt did not want to do.可知,科学家不愿意占用农民的良田,因为这样会影响农民的粮食。
小题3:A 推断题。根据最后一段可知,椰树发电也不是完美的,还有技术问题,故选A。
小题4:B 概括标题。根据本文的主题可知,科学家最后发现椰树可以用于发电。故答案为B。
核心考点
试题【Seth DeBolt is a plant scientist at the University of Kentucky US. He and other 】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
In the animal kingdom, weakness can bring about aggression in other animals. This sometimes happens with humans also. But I have found that my weakness brings out the kindness in people. I see it every day when people hold doors for me, pour cream into my coffee, or help me to put on my coat. And I have discovered that it makes them happy.
From my wheelchair experience, I see the best in people, but sometimes I feel sad because those who appear independent miss the kindness I see daily. They don’t get to see this soft side of others. Often, we try every way possible to avoid showing our weakness, which includes a lot of pretending. But only when we stop pretending we’ re brave or strong do we allow people to show the kindness that’ s in them.
Last month, when I was driving home on a busy highway, I began to feel unwell and drove more slowly than usual. People behind me began to get impatient and angry, with some speeding up alongside me, horning (按喇叭) or even shouting at me. At that moment,I decided to do something I had never done in twenty-four years of driving. I put on the car flashlights and drove on at a really low speed.
No more angry shouts and no more horns!
When I put on my flashlights, I was saying to the other drivers, “I have a problem here. I am weak and doing the best I can.” And everyone understood. Several times, I saw drivers who wanted to pass. They couldn’t get around me because of the stream of passing traffic. But instead of getting impatient and angry, they waited, knowing the driver in front of them was in some way weak.
Sometimes situations call for us to act strong and brave even when we don’t feel that way. But those are few and far between. More often, it would be better if we don’t pretend we feel strong when we feel weak or pretend that we"re brave when we’re scared.
小题1:The author has discovered that people will feel happy when ________.
A.they offer their help
B.they receive others’ help
C.they feel others’ kindness
D.they show their weakness
小题2:The author feels sad sometimes because ________.
A.he has a soft heart
B.he relies much on others
C.some people pretend to be kind
D.some people fail to see the kindness in others
小题3:What did the other drivers do when they saw the flashlights?
A.They speeded up to pass.
B.They waited with patience.
C.They tried their best to help.
D.They put on their flashlights too.
小题4:In this passage, the author advises us to ________.
A.handle problems by ourselves
B.accept help from others
C.admit our weakness
D.show our bravery

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If we were asked exactly what we were doing a year ago,we should probably have to say that we could not remember. But if we had kept a book and had written in it an account of what we did each day,we should be able to give an answer to the question.
It is the same in history .Many things have been forgotten because we do not have any written account of them .Sometimes men did keep a record of the most important happenings in their country,but often it was destroyed by fire or in a war.Sometimes there was never any written record at all because the people of that time and place did not know how to write.For example,we know a good deal about the people who lived in China 4,000 years ago, because they could write and leave written records for those who lived after them.But we know almost nothing about the people who lived even 200 years ago in central Africa, because they had not learned to write.
Sometimes, of course,even if the people cannot write,they may know something of the past.They have heard about it from older people,and often songs and dances and stories have been made about the most important happenings,and these have been sung and acted  and told for many generations, for most people are proud to tell what their fathers did in the past.This we may call  “remembered history”.Some of it has now been written down. It is not so exact or so valuable to us as written history is,because words are much more easily changed when used again and again in speech than when copied in writing.But where there are no written records,such spoken stories are often very helpful.
小题1:Which of the following ideas is not suggested in the passage?
A.“Remembered history”,compared with written history,is less reliable
B.Written records of the past play the most important role in our learning of the human history.
C.A written account of our daily activities helps US to be able to answer many questions.
D.Where there are no written records.there is no history.
小题2:We know very little about the central Africa 200 years ago because ___
A.there was nothing worth being written down at that time
B.the people there ignored the importance of keeping a record
C.the written records were perhaps destroyed by a fire
D.the people there did not know how to write
小题3:“Remembered history” refers to ___.
A.history based on a person’s imagination
B.stories of important happenings passed down from mouth to mouth
C.songs and dances about the most important events
D.both B and C
小题4:“Remembered history”is regarded as valuable only when ____.
A.it is written downB.no written account is available
C.it proves to be timeD.people are interested in it
小题5:The passage suggests that we could have learned much more about our past than we do now if the ancient people had _____
A.kept a written record of every past event
B.not burnt their written records in wars
C.told exact stories of the most important happenings
D.made more songs and dances

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Hundreds of years ago, life was much harder than it is today. People didn’t have modern machines. There was no modern medicine, either.
Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air    pollution is the most serious kind of pollution. It’s bad to all living things in the world.
Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick that it is like a quilt over a city. This kind of quilt is called smog.
Many countries are making rules to flight pollution. Factories must now clean their water before it is thrown away, and they mustn’t blow dirty smoke into the air.
We need to do many other things. We can put waste things in the dustbin and do not throw them on the ground, there will be less pollution.
Rules are not enough. Every person must help to fight pollution.
小题1:Hundreds of years ago, life was much harder than it is today because ______.
A.there were not any modern machines
B.there was no modern medicine
C.both A and B
D.there were not many people
小题2:What is the biggest problem in today’s life?
A.Water pollution
B.Air pollution
C.Noise
D.Pollution
小题3:The most serious kind of pollution is ______.
A.noise pollution
B.air pollution
C.water pollution
D.A, B and C
小题4:Factories must clean their water ______.
A.before they are thrown away
B.when they are thrown away
C.after it is thrown away
D.before it is thrown away
小题5:From the passage we know that ______.
A.a few years ago, there was no smog at all
B.today people don’t have to talk to each other in a loud voice
C.we can drink water from the polluted rivers and lakes
D.people are making rules in order to fight pollution

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Popeye the Sailor first became a popular cartoon in the 1930s.The sailor in that cartoon ate lots of spinach(菠菜) to make him strong. People watched him, and they began to buy and eat a lot more spinach. Popeye helped sell 33 percent more spinach than before! Spinach became a necessary part of many people’s diets. Even some children who hated the taste began to eat the vegetable.
Many people thought that the iron in spinach made Popeye strong, but this is not true. Spinach does not have any more iron than any other green vegetable.
People only thought spinach had a lot of iron because the people who studied the food made a mistake. In the 1890s, a group of people studied what was inside vegetables. This group said that spinach had ten times more iron than it did. The group wrote the number wrong, and everyone accepted it.
Today, we know that the little iron there is in spinach cannot make a difference in how strong a person is. However, spinach does have something else which the body needs—folic acid(叶酸).
It is interesting to point out that folic acid can help make a person strong. Maybe it was really the folic acid that made Popeye strong all along.   
小题1:A good title for this reading passage is______.
A.Popeye the Sailor
B.The Truth About Spinach
C.A Mistake with Numbers
D.Folic Acid Makes You Strong
小题2:Why did many people eat spinach after they saw Popeye the Sailor?
A.They thought spinach made them strong.
B.They thought Popeye was funny.
C.Spinach had a lot of iron.
D.People liked folic acid.
小题3:A research group told people that spinach______.
A.made Popeye strong
B.was a green vegetable
C.had less iron than other green vegetables
D.had more iron than other green vegetables
小题4:Folic acid is ______.
A.something in food
B.a vegetable
C.dangerous
D.a certain kind of spinach

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The koala, one of Australia’s most treasured creatures, is in trouble.

Affected by habitat (栖居地) loss and climate change, like many other uniquely Australian animals, koalas are being squeezed into smaller regions. But at present, it is a deadly disease, a somewhat silent killer that causes a further decline in the koala population, that is worrying many scientists about the fate of the koala.
The killer is Chlamydia, which has caused symptoms in up to 50 percent of the wild koalas, with probably even more infected (感染) but not showing symptoms. It has been particularly severe in Queensland, where nearly all koalas are infected. The disease causes many symptoms including eye infections, which can lead to blindness, making it difficult for them to find their primary food.
Treating Chlamydia in wild koalas is a challenge. There is no treatment available for it. Only a small percentage of the animals can be treated successfully and returned to the wild. Besides, there is no national plan in Australia to save the koala; it is up to each region to make management plans for its koala population.
The good news is that researchers are working to test a vaccine (疫苗) that would help prevent further spread. If all goes well, plans can be carried out to distribute the vaccine more widely. But it’s impossible to vaccinate (给注射疫苗)  all wild koalas.
Another possibility would be to make vaccine distribution a routine part of treatment for the thousands of koalas brought into care centers every year after they are injured by cars or dogs.
While it is a combination of problems that are affecting the wild koala population, many experts believe this vaccine would be an important step in helping koalas survive longer. It may be enough time to give researchers a chance to solve some of the other problems facing Austalia’s koalas.
小题1:Which isn’t considered the main cause of koala’s population decline?
A.A deadly disease.
B.Injuries from cars and dogs.
C.Climate change.
D.Habitat loss.
小题2:The third paragraph mainly tells us         .
A.the serious result Chlamydia has caused to the koala
B.Chlamydia affected the koala only in particular regions
C.the most serious symptom of Chlamydia is eye infections
D.Chlamydia can seriously affect koala’s primary food
小题3:We can learn from the text that the vaccine      .
A.would cure the killer Chlamydia quite effectively
B.would only be distributed in koala care centers
C.has already been put into practical use in Australia
D.cannot be distributed to all the infected koalas
小题4:It can be inferred from the text that        .
A.a national plan for saving koalas will be made soon in Australia
B.koala population is declining only in a few regions
C.researchers need enough time to solve the koala problems
D.experts have lost the best chance to save the infected koalas

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