What will power your house in the future？Nuclear，wind，or solar power？According to scientists at the Massachusetts Institute of Technology (MIT) in the US，it might be leaves — but artificial (人造的) ones.
Natural leaves are able to change sunlight and water into energy. It is known as photosynthesis (光合作用)．Now researchers have found a way to imitate this seemingly simple process.
The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip with catalysts (催化剂)．Similar to natural leaves，it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell，which uses those two materials to produce electricity，located either on top of a house or beside the house.
Though the leaf is only about the shape of a poker card，scientists claimed that it is promising to be an inexpensive source of electricity in developing countries. “One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology,” said Nocera at a conference of the American Chemical Society.
The artificial leaf is not a new idea. The first artificial leaf was invented in 1997 but was too expensive and unstable for practical use. The new leaf，by contrast，is made of cheap materials，easy to use and highly stable. In laboratory studies，Nocera showed that an artificial leaf prototype (原型) could operate continuously for at least 45 hours without a drop in activity.
The wonderful improvements come from Nocera's recent discovery of several powerful，new and inexpensive catalysts. These catalysts make the energy transformation inside the leaf more efficient with water and sunlight. Right now，the new leaf is about 10 times more efficient at carrying out photosynthesis than a natural one. Besides，the device can run in whatever water is available；that is，it doesn't need pure water. This is important for some countries that don't have access to pure water.
With the goal to “make each home its own power station” and “give energy to the poor”，scientists believe that the new technology could be widely used in developing countries，especially in India and rural China.
【小题1】Which of the following orders correctly shows how the artificial leaf is used to produce electricity?
a．artificial leaves split water into hydrogen and oxygen
b．the hydrogen and oxygen gases are stored in a fuel cell
c．the artificial leaves are put in water
d．the fuel cell uses hydrogen and oxygen to produce electricity
| A．c，a，b，d | B．c，b，a，d |
| C．b，c，a，d | D．c，a，d，b |
| A．build up more power stations in the world |
| B．provide cheaper energy for developing countries |
| C．offer people in developing countries access to pure water |
| D．gain a deeper understanding of the photosynthesis process |
| A．an introduction to the history of artificial leaves |
| B．a mixture of water power and solar energy |
| C．giving energy to the poor |
| D．an invention copying photosynthesis |
【小题1】A
【小题2】B
【小题3】D
解析试题分析：本文介绍了一项仿造叶子光合作用的发明—人工叶子的工作原理、工作性能和工作条件，可为发展中国家提供便宜的能源。
【小题1】细节题：根据第三段中“it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell，which uses those two materials to produce electricity，located either on top of a house or beside the house.”当把它投入一桶水中，可以把水分解成氢和氧。然后把氢和氧气体储存到放置在房间里或房子的旁边的燃料电池中,使用这两个材料来产生电能。由此可知正确顺序是A。故选A。
【小题2】细节题：根据第四段中“scientists claimed that it is promising to be an inexpensive source of electricity in developing countries.”科学家声称,它可为发展中国家提供廉价的电力来源。故选B。
【小题3】主旨题：阅读全文可知本文介绍了一项仿造叶子光合作用的发明—人工叶子的工作原理、工作性能和工作条件，可为发展中国家提供便宜的能源。故选D。
考点：考查科普类阅读
科目：高中英语 来源： 题型：阅读理解
It’s only 4 hours flying time from Sydney, but a world away. What better place to rest than a country where the only place people hurry is on the football field and things are done in “Fiji time”?
Viti Levu—Great Fiji—is the largest island. Here you’ll find the capital Suva and the international airport at Nadi. Vatoa, on the other hand, is a tiny island in the farthest part of Fiji. Then there are 331 other islands, many of them with places to stay.
With less than a million people living on islands, you’ll never feel crowded. And with a climate(气候)that changes only for five degrees between seasons, there’s never a bad time to come.
From cities to villages, from mountains to beaches, from water sports to wooden artworks, Fiji can give you more adventures and special experiences than you could find almost anywhere in the world.
Whenever you come, wherever you go, you’re sure to see some unforgettable events, from war dances to religious(宗教的)songs, from market days to religious days. It’s not just staged for tourists; it’s still a part of everyday life in Fiji. And any one of us can enjoy Fiji’s spirit by being part of the traditional(传统的)sharing of yaqona—a drink made from the root of a Fiji plant.
So why not join us for the experience of a lifetime?
【小题1】 Where is the international airport of Fiji?
| A．In Suva | B．In Sydney |
| C．On the island of Vatoa | D．On the island of Viti Levu |
| A．They invented “Fiji time” for visitors. |
| B．They stick to a traditional way of life. |
| C．They like to travel from place to place. |
| D．They love taking adventures abroad. |
| A．its comfortable hotels |
| B．its good weather all year round |
| C．its exciting football matches |
| D．its religious beliefs |
| A．In a personal diary |
| B．In a science report |
| C．In a travel magazine |
| D．In a geography textbook |
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科目：高中英语 来源： 题型：阅读理解
The weather is getting hotter. You are thirsty（口渴的） playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you are drinking. Something that looks cool may not be good for your health. There are plenty of “energy drinks” on the market. Most of them have beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great!
But after a careful check you may find that most energy drinks have lots of caffeine(咖啡碱)in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much. Caffeine makes your heart beat fast. Because of this, the International Olympic Committee(IOC)（国际奥委会） has limited its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.
【小题1】Which of the following can be the best title of the passage? ______
| A．What’s the Use of Energy Drinks? |
| B．Who Can Drink Energy Drinks? |
| C．What’s that in Energy Drinks? |
| D．Why Can’t We Buy Energy Drinks? |
| A．disliked | B．helped | C．stopped | D．encouraged |
| A．energy drinks are especially aimed at teenagers |
| B．energy drinks are helpful to teenagers’ study |
| C．sports players need to drink a lot of energy drinks |
| D．advertisements are important in getting people to buy energy drinks |
| A．they have beautiful colors and cool names |
| B．they have lots of caffeine |
| C．they can keep them awake and better at sports |
| D．they are said to be helpful to health |
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科目：高中英语 来源： 题型：阅读理解
You might not know it, but there is something wonderful at your fingertips. You can make people happier, healthier and more hard-working just by touching their arms or holding their hands.
Doctors say that body contact is a kind of medicine that can work wonders. When people are touched, the quantity of hemoglobin (血红蛋白)－a type of matter that produces the red color in blood increases greatly. This results in more oxygen reaching every part of the body and the whole body benefits. In experiments, bottle-fed baby monkeys were separated from their mothers for the first ten days of life. They became sad and negative. Studies showed the monkeys were more probable to become ill than other babies that were allowed to stay with their mothers.
Human babies react in much the same way. Some years ago, a scientist noticed that some well-fed babies in a clean nursery became weak. Yet babies in another nursery were growing healthily, even though they ate less well and were not kept as clean. The reason, he concluded, was that they often had touches from nurses.
Experiments show that most people like being touched. And nearly all doctors believe touch helps to reduce patients' fear of treatment. Of course there is time when a touch is not welcome. But even if we don't like being touched, a smile can make us feel better. Smiling increases blood flow and starts the production of "happy brain" chemicals. So let's have a big smile and don't forget to keep in touch.
【小题1】Which of the following is NOT true?
| A．Everyone knows that body contact can make people happier. |
| B．People may work harder because of body contact. |
| C．Your fingertips can do something. |
| D．People may not understand the importance of touching. |
| A．human brains need oxygen and blood supply now and then |
| B．touches from doctors and nurses have nothing to do with treatment |
| C．new-born baby monkeys should stay away from their mothers |
| D．not all the people like being touched |
| A．to be useful or helpful |
| B．to get something useful or helpful |
| C．to be ill |
| D．to be hurt |
| A．Why People Touch | B．Smile and Touch |
| C．Wonders of Touch | D．Touch or Not |
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科目：高中英语 来源： 题型：阅读理解
Some people have travelled to Canada while others may have just heard of it . As is known to all, the Canadian red and white maple leaf flag is officially called The National Flag of Canada. The Canadian flag shows a stylized red maple leaf with 11 points on a white background, with red borders down each side. The Canadian flag is twice as long as its width. The white square containing the red maple leaf is the same width as the flag. Canada is a very large country, too. It is the second largest country in the world.By contrast, it has a very small population. There are only about 29 millinon people there. Most Canadians are of British or French origin, and French is an official language as well English. About 45 % of the people are of British origin, that is, they or their parents or grandparents, etc, come from Britain. Nearly 30 % are of French origin. Most of the French-Canadians live in the province of quebec. Over the years people have come to live in Canada from many countries in the world. They are mostly from European countries and also from China, as well as other Asian countries.
However , Canada was not an empty country when the Europeans began to arrive. Canadian-Indian lived along the coast, bythe rivers and lakes and in forests. Today there are only 350,000 Canadian-Indians in the whole country, with their own language. In the far north live the Inuits. There are only 27, 000 Canadian-Inuits. Their life is hard in such a harsh climate.
【小题1】What is the populatin of Quebec?
| A．More than 29, 000.000 |
| B．About 30% of the total population. |
| C．Over 45% of th etotal population |
| D．Less than 30% of the French-Canadians. |
| A．The Canadian flag I stwice as wide as its length. |
| B．Most Indians are now forced to live along the coast. |
| C．Nowadays Inuit still have difficult living conditions. |
| D．Nobody existed when the Europeans began to arrive in Canada. |
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科目：高中英语 来源： 题型：阅读理解
Throughout the world, boys and girls prefer to play with different types of toys. Boys typically like to play with cars and trucks, while girls typically choose to play with dolls. Why is this? A traditional sociological explanation is that boys and girls are socialized and encouraged to play with different types of toys by their parents, peers, and the “society”. Growing scientific evidence suggests, however, that boys’ and girls’ toy preferences may have a biological origin.
In 2002, Gerianne M. Alexander of Texas A&M University and Melissa Hines of City University in London surprised the scientific world by showing that monkeys showed the same sex-typical toy preferences as humans. In the study, Alexander and Hines gave two masculine toys (a ball and a police car), two feminine toys (a soft doll and a cooking pot), and two neutral toys (a picture book and a stuffed dog) to 44 male and 44 female monkeys. They then assessed the monkeys’ preference for each toy by measuring how much time they spent with each. Their data showed that male monkeys showed significantly greater interest in the masculine toys, and the female monkeys showed significantly greater interest in the feminine toys. The two sexes did not differ in their preference for the neutral toys.
If children’ s toy preferences were largely formed by gender socialization, as traditional sociologists’ claim, in which their parents give “gender appropriate” toys to boys and girls, how can these male and female monkeys have the same preferences as boys and girls？They were never socialized by humans, and they had never seen these toys before in their lives.
【小题1】Traditional sociologists believe boys’ and girls’ toy preferences ________.
| A．are passed down from their parents |
| B．are largely formed in later life |
| C．have nothing to do with gender socialization |
| D．have a biological origin |
| A．also have a sex typical toy preference |
| B．also play toys as humans do |
| C．have no toy preferences |
| D．like to play different toys at different time |
| A．find more evidence for traditional sociology |
| B．test the intelligence of monkeys |
| C．test whether monkeys like to play toys |
| D．find out why boys and girls prefer different toys |
| A．only the male monkeys showed interest |
| B．the female monkeys showed more interest |
| C．the male and female monkeys showed the same interest |
| D．neither the male nor the female monkeys showed any interest |
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科目：高中英语 来源： 题型：阅读理解
Will online courses transform world of education?
Some may wonder what it feels like to attend a class at Stanford University. The recently popular MOOCs (Massive Open Online Courses) can satisfy this desire. But they are also most likely to change the situation of higher education. Only last month，both Peking University and Tsinghua University announced plans to start open online course on the edX platform，one of the world’s major providers of MOOCs，to explore this new form of online education.
Gaining momentum(势头)
“It’s not only a change of platforms from offline to online. It’s more about a reform of
teaching methods，even the whole education system，”said Chen Jining，president of Tsinghua University.
The potential of MOOCs to reform education has been obvious in the US ever since the immediate popularity of the course Artificial Intelligence，taught by Stanford University professor Sebastian Thrun, who later co-founded Udacity, a platform with 1.6 million enrolled(注册) students in 200 countries. According to Nature magazine，by June 2013，74 percent of universities in the US offered some type of online course. Lu Fang, vice-president of Fudan University，explains the appeal of MOOCs as a simple case of supply and demand：“The demand for high quality educational resources from both enrolled students and professionals is feeding the rise of MOOCs，in which classes usually taught by top teachers are available to everyone，”said Lu.
Too early to replace
With easy access and free of charge, MOOCs are said to have the potential to change the present education system. But there are barriers，because hardly any universities offer degree certificates, as college administrators point out, it’s difficult to confirm if students are foaming anything in MOOCs，reposed USA Today．
The Wall Street Journal also reposed that，presently，a typical MOOC student is likely to have
already graduated from college and is using the course to explore an interest or acquire professional
skills. Even so, an increasing number of undergraduates are signing up.
“What we are really establishing(创建)are educational pathways for people who want skills that are related to contemporary jobs，”Thrun told The Wall Street Journal．
【小题1】MOOCs have been considered likely to reform education since___________．
| A．the founding of Udacity |
| B．the wide application of online education |
| C．the popularity of the course Artificial Intelligence |
| D．the opening of MOOCs on the edX platform in China |
| A．high quality educational resources are in demand |
| B．students can attend courses in famous universities |
| C．college students have access to famous teachers |
| D．MOOCs have brought about revolution in education |
| A．Most of the MOOCs focus on professional training for college graduates． |
| B．There are barriers for MOOCs to replace the present education system． |
| C．International companies prefer applicants who graduate from MOOCs． |
| D．More and more undergraduates have realized the limits of MOOCs． |
| A．doubtful | B．negative | C．critical | D．optimistic |
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科目：高中英语 来源： 题型：阅读理解
Even plant can run a fever, especially when they’re under attack by insects or disease. But unlike human, plants can have their temperature taken from 3, 000 feet away straight up. A decade ago, adopting the infrared （红外线）scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide （杀虫剂）spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest （害虫）problems.
Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3, 000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running“fevers”. Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long - term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. “This technique can be used on 75 percent of agricultural land in the United States, ” says George Oerther of Texas A & M. Ray Jackson , who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only ff Paley finds the financial backing which he failed to obtain 10 years ago.
【小题1】 Plants will emit an increased amount of heat when they are______________.
| A．sprayed with pesticides |
| B．facing an infrared scanner |
| C．in poor physical condition |
| D．exposed to excessive sun rays |
| A．estimate the damage to the crops |
| B．measure the size of the affected area |
| C．draw a color-coded map |
| D．locate the problem area |
| A．resorting to spot-spraying |
| B．consulting infrared scanning experts |
| C．transforming poisoned rain |
| D．detecting crop problems at an early stage |
| A．the lack of official support |
| B．its high cost |
| C．the lack of financial support |
| D．its failure to help increase production |
| A．the desire of farmers to improve the quality of their produce |
| B．growing concern about the excessive use of pesticides on crops |
| C．the forceful promotion by the Department of Agriculture |
| D．full support from agricultural experts |
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科目：高中英语 来源： 题型：阅读理解
Researchers conducting a study of hospital stays for over two hundred and eighty six thousand older folks found something interesting in their data.
The number of hospitalizations for heart disease and stroke went down significantly among a certain group of people at a certain time of year. What folks, and what time of year, you ask? Flu season and the lucky people were the ones who got flu shots(流感疫苗).
It’s generally recommended that people over fifty get their flu shots every year. Influenza(流行性感冒) is no small thing. it’s responsible for around thirty six thousand deaths a year in the U. S. alone. Getting the shots also cuts down on the chances of getting pneumonia(肺炎), which is especially dangerous in seniors.
But what wasn’t known was that there seems to be an added benefit to getting a flu shots in terms of warding off heart problems. The data,in fact, are quite strong in suggesting this is the case.
In this study, flu shots cut clown the number of hospitalizations for heart disease by nineteen percent. Stroke went down sixteen percent one season and a whopping twenty-three percent a second season.These are big results.
So what's the connection between getting a flu shot and having a stronger heart? It isn’t yet known.
Researchers speculate that the flu virus itself may do damage to blood vessels(血管), possibly making clots(血块)more likely. Blood clots in the heart can cause heart attacks, and blood clots in the brain can cause strokes.
Whatever the specific details are, there's one more good reason to follow your doctor’ s advice and get that annual flu shot.
【小题1】According to the study, the number of hospitalizations for heart disease and stroke went down significanntly among the ones who _____.
| A．got flu shots after they were ill |
| B．got flu shots before they were ill |
| C．got flu shots at the flu season |
| D．got flu shots whenever convenient |
| A．it can cut down on the chances of getting pneumonia |
| B．it can cut down the number of hospitalizations for heart disease |
| C．it can kill the flu virus |
| D．if can make blood clots |
| A．keeping away | B．dealing with | C．setting off | D． picking up |
| A．work out to fight against influenza | B．get flu shot every year |
| C．follow our doctor's all advice | D．protect our blood vessels |
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