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Sunny countries are often poor. A shame, then, that solar power is still quite expensive. Eight19, a British company by Cambridge University, has, however, invented a novel way to get round this. In return for a deposit of around $10 it is supplying poor Kenyan families with a solar cell able to generate 2.5 watts of electricity, a battery that can deliver a three amp(安培) current to store this electricity, and a lamp whose bulb is a light-emitting diode(二极管). The firm thinks that this system, once the battery is fully charged, is enough to light two small rooms and to power a mobile-phone charger for seven hours. Then, next day, it can be put outside and charged back up again.
The trick is that, to be able to use the electricity, the system's keeper must buy a scratch card—for as little as a dollar—on which is printed a reference number. The keeper sends this reference, plus the serial number of the household solar unit, by SMS to Eight19. The company's server will respond automatically with an access code to the unit.
Users may consider that they are paying an hourly rate for their electricity. In fact, they are paying off the cost of the unit. After buying around $80 worth of scratch cards—which Eight19 expects would take the average family around 18 months—the user will own it. He will then have the option of continuing to use it for nothing, or of trading it in for a bigger one, perhaps driven by a 10-watt solar cell.
In that case, he would go then through the same process again, paying off the additional cost of the upgraded kit at a slightly higher rate. Users would therefore increase their electricity supply steadily and affordably.
According to Eight19's figures, this looks like a good deal for customers. The firm believes the average energy-starved Kenyan spends around $10 a month on oil—enough to fuel a couple of smoky lamps—plus $2 on charging his mobile phone in the market-place. Regular users of one of Eight19's basic solar units will spend around half that, before owning it completely. Meanwhile, as the cost of solar technology falls, it should get even cheaper.
【小题1】The underlined word “get round” in the first paragraph can be replaced by _______ .
| A.make use of | B.come up with | C.look into | D.deal with |
| A.Buy a scratch card. | B.Recharge it outside. |
| C.Buy another solar cell. | D.Return it to the company. |
| A.Around $10. | B.Around $80. | C.Around $90. | D.Around $180. |
| A.Kenyan families would find it difficult to afford the solar cell |
| B.using the solar cell would help Kenyan families save money |
| C.few Kenyan families use mobile phones for lack of electricity |
| D.the company will make a great profit from selling solar cells |
| A.Solar Energy: Starting from Scratch. |
| B.Eight19: a creative British Company. |
| C.Kenyan Families: Using Solar Energy for Free. |
| D.Poor Countries: Beginning to Use Solar Energy. |
根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项
为多余选项。
Any car accident is frightening, but an accident in which your vehicle is thrown into the water, with you trapped inside, is absolutely terrifying. 【小题1】 However, most deaths result from panic, without a plan or understanding what is happening to the car in the water. By adopting a brace(支撑) position, acting decisively and getting out fast, you can save yourself from a sinking vehicle.
Brace yourself for impact (撞击力). As soon as you're aware that you're going off the road and into a body of water, adopt a brace position. The impact could set off the airbag system in your vehicle, so you should place both hands on the steering wheel in the "ten and two" position.
Undo your seatbelt. 【小题2】 Unbuckle the children, starting with the oldest first. Forget the cell phone call. Your car isn't going to wait for you to make the call.
【小题3】 Leave the door alone at this stage and concentrate on the window. A car's electrical system should work for up to three minutes in water, so try the method of opening it electronically first. Many people don't think about the window as an escape option either because of panic or misinformation about doors and sinking.
Break the window. If you aren't able to open the window, or it only opens halfway, you'll need to break it with an object or your foot. It may feel counter-intuitive (有悖常理的) to let water into the car. 【小题4】
Escape when the car has equalized. If it has reached the dramatic stage where the car cabin has been filled with water and it has become balanced, you must move quickly and effectively to ensure your survival. 【小题5】 While there is still air in the car, take slow, deep breaths and focus on what you're doing.
Open the window as soon as you hit the water.
Surviving a sinking car is not as difficult as you think.
It takes 60 to 120 seconds for a car to fill up with water usually.
Such accidents are particularly dangerous to the risk of drowning.
In conclusion, if you know what to do in the water, you will be safe.
This is the first thing to attend to, yet it often gets forgotten in the panic.
But the sooner the window is open, the sooner you can escape directly through it.
Elderly adults who regularly drink green tea may stay more agile (敏捷的) and independent than their peers over time, according to a Japanese study that covered thousands of people.
Green tea contains antioxidant chemicals (抗氧化物) that may help stop the cell damage that can lead to disease. Researchers have been studying green tea’s effect on everything from cholesterol (胆固醇) to the risk of certain cancers, with mixed results so far.
They found those who drank the most green tea were the least likely to develop “functional disability”, or problems with daily activities or basic needs, such as dressing or bathing.
Specifically, almost 13 percent of adults who drank less than a cup of green tea per day became functionally disabled, compared with just over 7 percent of people who drank at least five cups a day.
The study did not prove that green tea alone kept people agile as they grew older. Green-tea lovers generally had healthier diets, including more fish, vegetables and fruit, as well as more education, lower smoking rates, fewer heart attacks and strokes, and greater mental sharpness. They also tended to be more socially active and have more friends and family to rely on. But even with those factors accounted for, green tea itself was tied to a lower disability risk, the researchers said.
People who drank at least five cups a day were one-third less likely to develop disabilities than those who had less than a cup per day. Those people who averaged three or four cups a day had a 25 percent lower risk.
Although it’s not clear how green tea might offer a buffer (缓冲) against disability, Tomata’s team did note that one recent study found green tea extracts (提取物) seem to increase leg muscle strength in older women.
While green tea and its extracts are considered safe in small amounts, they do contain caffeine and small amounts of vitamin K, which means it could affect drugs that prevent blood clotting (凝固).
1.What can be learned from the passage?
A.Antioxidant chemicals can lead to disease.
B.Those who often drank green tea can’t develop “functional disability”.
C.“Functional disability” is related to problems with daily activities or basic needs.
D.People who drank at least five cups a day are not likely to become functionally disabled.
2.What does the fifth paragraph mainly tell us?
A.How the study was proved. B.Why green tea-lovers can keep agile.
C.What healthier diets include. D.How to lower disability risk.
3.What have the Researchers discovered?
A.Those who drank green tea can't develop “functional disability”.
B.Green tea alone kept people agile as they grew older.
C.How green tea might offer a buffer against disability.
D.Green tea extracts (提取物) seem to increase leg muscle strength in older women.
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(D)
Inventor,physicist,surveyor,astronomer,biologist,artist…Robert Hooke was all these and more.Some say he Was the greatest experimental scientist of the 17th century.In the course of his work,he cooperated with famous men of science like Isaac Newton,and the great architect, Chrish@ler Wren.
Hoocke's early education began at home,under the guidance of his father.He entered Westnfinster School at the age of 13,and from there went to Oxford,where he came in contact with some of the best scientists in England.Hooke impressed them with his skills at designing experiments and inventing instruments.In 1662,at the age of 28, he was named Curator of
Experiments at the newly formed Royal Society of London—meaning that he was responsible for demonstrating new experiments at the society’s weekly meetings.Hooke accepted the job,even though he knew that the society had no money to pay him!
Watching living things through a microscope was one of his favorite pastimes.He invented a compound microscope for this purpose.One day while observing a cork(软木塞)under a microscope,he saw honeycomb-like structures.They were cells—the smallest units of life.In fact,it was Hooke who invented the term“cell” as the boxlike ceils of the cork reminded him of the cells of a monastery(修道院).
Another achievement Of Hook’s was his book Micrographi which introduced the.Enormous potential of the microscope.It contains fascinating drawings of the things he saw under the microscope.The book also includes,among other things,ideas on gravity,light and combustion(燃烧)that may have helped scientists like Newton when they were developing their own theories on these phenomena.
Hooke made valuable contributions to astronomy too.A crater(坑)on the moon is named after him in appreciation of his services to this branch of science.
68.Why possibly did Hooke accept the job as Curator of Experiments?
A. Because his parents couldn’t afford his education.
B.Because his family needed his support.
C.Because he wanted to please the famous scientists in England.
D.Because he liked designing experiments.
69.The cell got its name because of .
A.its use B.its shape C.Hooke’s favorites D.Hooke’s experiences
70.The last paragraph is to prove that .
A.Hooke was the greatest experimental scientist of the 17th century
B.Hooke was good at making discoveries
C.Hooke’s contributions were not limited to one field
D.Hooke was one of the greatest astronomers
71.The best title for the text may be .
A.The Greatest Scientist B.A Helper of Newtom
C.A Brief Introduction to Hooke D.Achievements of Hook
短文填词
Many students now come to school with cell-
phones. My schoolmates have different opinions on
it. Some think it is convenient to get in t 86 with
others, which also makes you f__87__ safe especially
in time of trouble. Besides, it is nice to enjoy __ 88 __
(各种)functions of different cell-phones. O__89__ think
differently. 90 , there are many IC phones in the school
making _91_ easy to call others. Second, many students
often play games and send messages by u__92__ their
cell-phones, even in class, 93 will surely have
bad e 94 _on their study. What’s more, it will result
in a great waste of time and money. In my opinion, the
cell-phone is a useful t____95__ in our daily life. But it
doesn’t mean that we can use it at school.
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