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 |
【小题1】C
【小题2】D
【小题3】A
【小题4】B
解析试题分析：一定恨透了流感吧？头疼脑热，四肢无力，涕泪四流……但你是否知道偶尔患患流感能降低罹患心脏病与中风的危险呢？让我们一起来听听研究人员的新发现吧。。
【小题1】细节理解题。由“Flu season and the lucky people were the ones who got flu shots(流感疫苗).”可知接种了流感疫苗的人患心脏病和中风更少些 。故选C。
【小题2】细节理解题。由“Researchers speculate that the flu virus itself may do damage to blood vessels(血管), possibly making clots(血块)more likely. ”可知血液会更快速的凝结成块，这会在心脏里堆积导致心脏病 。故选D。
【小题3】词义猜测题。从上下文可知流感疫苗有某种好处，所以推断是“避免”心脏病 。keeping away 远离；dealing with处理；setting off使爆炸；picking up捡起。故选A。
【小题4】细节理解题。由“Whatever the specific details are, there's one more good reason to follow your doctor’ s advice and get that annual flu shot.”可知每年接种流感疫苗更安全些 。故选B。
考点： 科普类阅读。
科目：高中英语 来源： 题型：阅读理解
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 |
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科目：高中英语 来源： 题型：阅读理解
Global warming is when the earth heats up，the temperature rises.It happens when greenhouse gases—carbon dioxide，water vapor，nitrous oxide(二氧化氮)，and methane(沼气) trap heat and light from the sun in the earth’s atmosphere，which increases the temperature.This is like when heat is trapped in a car.On a very hot day，the car gets hotter when it is out in the parking lot.This is because the heat and light from the sun can get into the car，by going through the windows，but it can’t get back out.Once the light is inside the car，it is trapped and the heat builds up，just like it does in the earth’s atmosphere.This is what the greenhouse effect does to the earth.The heat and light can get through the atmosphere，but it can’t get out.As a result，the temperature rises.
Sometimes the temperature can change in a way that helps us.The greenhouse effect makes the earth appropriate for people to live on.Without it，the earth would be freezing，or on the other hand it would be burning hot.We would not get the sun’s heat and light to make the night somewhat warm.During the day，especially during the summer，it would be burning because the sun would be up with no atmosphere to filter(过滤) it，so people，plants，and animals would be exposed to all the light and heat.
Although the greenhouse effect makes the earth able to have people living on it，if there gets to be too many gases，the earth can get unusually warmer，and many plants，animals，and people will die.They would die because there would be less food (plants like corn，wheat，and other vegetables and fruits)．This would happen because the plants would not be able to take in the heat.This would cause us to have less food to eat，but it would also limit the food that animals have.Gradually，people，plants，and animals would all die of hunger.
People are doing many things to try to stop global warming.One thing people are doing is carpooling.Carpooling is driving with someone to a place that you are both going to.This minimizes the amount of greenhouse gases put into the air by a car.
Another thing that people are doing is being more careful about leaving things turned on like the television，computer，and the lights.A lot of people are taking time away from the television，and instead，they are spending more time outdoors.This helps our planet out a lot.Now，more people are even riding buses，walking to school，and riding their bikes to lower the amount of greenhouse gases in the air.
Planting trees and recycling also help.If you recycle，less trash goes to the dump，and less trash gets burned.As a result，there are fewer greenhouse gases in our atmosphere.Although adults do many things to help stop global warming，kids can do just as much.
【小题1】By the example given in Paragraph 1，the author wants to ________.
| A．explain how greenhouse gases work |
| B．show his feeling in a car in hot summer |
| C．tell us cars are causes of greenhouse gases |
| D．say that there are greenhouse gases in every car |
| A．light | B．heat |
| C．temperature | D．greenhouse effect |
| A．If there is greenhouse effect，all the plants will die. |
| B．Human beings are likely to disappear from the earth. |
| C．Crops can’t take the heat if there is greenhouse effect. |
| D．Although greenhouse effect is necessary，too much of it causes us to die. |
| A．Why cars and buses pollute the air a lot. |
| B．What kids can do to help stop global warming. |
| C．What global warming is doing to the environment. |
| D．Who should be responsible for the environmental problems. |
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科目：高中英语 来源： 题型：阅读理解
Why do human beings still risk their lives under ground and doing one of the dirtiest and most dangerous jobs in the world? It is an increasingly urgent question, given the recent mining accidents in Sago, W. Va and Huntington, Utah. A small group of engineers and robotics experts look forward to a day in the not-too-distant future when robots and other technology do most of the dangerous mining work.
Robotic technology, in particular, holds much promise, McAteer says, especially when it comes to mapping mines and rescuing trapped miners --- the special operations of the mining industry.
One of the first mining robots was developed five years ago at Carnegie Mellon University’s Robotics Institute. It was called Groundhog. It used lasers(激光器) to “see” in dark tunnels and map abandoned mines—some of the most dangerous work in the business.
The latest design is called Cave Crawler. It’s a bit smaller than Groundhog，and even more advanced. It can take photos and videos and has more sensors that can detect the presence of dangerous gases. Incredibly，the robot has a real sense of logic. If it comes across an obstacle it gets momentarily confused. It has to think about what to do and where to go next. Sometimes it throws a fit just like a real person.
The greatest problem, though, is cost. The money of the earliest research project was provided by the government, but that money had dried up, and it’s not clear where future money will come from. Partly for that reason, and partly because of advances in safety, mining is not nearly as dangerous as it was in the past. Since 1990, fatalities(致命性) have declined by 67% and injuries by 51% , according to the National Mining Association.
Some experts predict that robots in mines will serve much of the same function that they do in the automotive industry. The robots do the most boring and dangerous jobs，but won’t get rid of the need for human workers.
【小题1】The latest robot is more advanced than Groundhog, mainly because ____.
| A．it can map abandoned mines |
| B．it can see in the dark tunnels |
| C．it’s smaller than Groundhog |
| D．it has a real sense of logic |
| A．gets angry | B．gets sick |
| C．becomes hungry | D．becomes cheerful |
| A．robots in mines will serve much in the automotive industry |
| B．there will be no need for human workers in mines |
| C．the mine robots will have a very bright future |
| D．robots in mines only do some simple jobs now |
| A．the mining robots do most of the mining work at present |
| B．groundhog can discover the presence of dangerous gases |
| C．experts are trying to make robots help miners with dangerous work |
| D．robots cannot do dangerous work in dark areas |
| A．Mining Accidents in America |
| B．Robots in Mines |
| C．Cave crawler, the Latest Robot |
| D．The Future of Robots |
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科目：高中英语 来源： 题型：阅读理解
Growing strawberries in pots
·The best way to start growing strawberries is to buy pot-grown strawberry plants m spring：5plants are plenty for a hanging basket and 10 for the average 13 inch-sized pot．
·Plant them immediately in soil-based compost(混合肥料) and they will produce a modest crop in their first year．The second year should see a bumper(特大的)crop，followed by a slightly lower yield(产量)the third summer .Then start again with fresh stock
·Careful watering and feeding are essential Ifyou are to harvest a good crop，you must never
let the compost dry out,particularly when the fruit is forming and ripening；if you do．most of your
crop will drop off血e bush almost immediately．
·Water well then leave the pots for up to 3 weeks，until they reach the point of drying out Be
Careful not to overwater them during the winter months．
Pruning apple trees
·A one-year-old tree is known as a “maiden”. It has a single stem when purchased. Immediately after planting, cut it back by about half to leave 4 good buds at the base of the stem.. This will force growth from the base or the plant during the summer.
·In the second year ,prune in winter by cutting all side branches back by about one-third, Make sure each cut is made cleanly just above an outward-facing bud. In the third and fourth years, new side branches will have emerged from the previous year’s growth. Cut back all these new side branches by a third, pruning to an outward-facing bud.
·By the fifth year the tree should have a well-balanced shape. From then on ,cut back all new branches by one-third in winter .Remove any diseased wood and broken branches, and ensure the centre is open to air circulation
【小题1】The two pieces of advice probably appear in
| A．a scientific repot | B．a gardening guide | C．a book review | D．a fashion column |
| A．the size of a pot | B．the season of harvesting |
| C．the number of plants in a pot | D．careful watering and feeding |
| A．remove the diseased and broken branches |
| B．keep the whole tree open to air circulation |
| C．force the apple tree to grow from the base in winter |
| D．help the apple tree to form a well-balanced shape |
| A．season | B．water | C．compost | D．cutting |
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科目：高中英语 来源： 题型：阅读理解
Televisions were among the most talked about items at the 2013 International Consumer Electronics Show last week in Las Vegas, Nevada. Some employed the most advanced technology ever.
Some of the TVs used a new technology called Organic Light Emitting Diodes, or OLED. They were thinner, lighter, offered better color and were brighter than traditional LEDs. Smart TVs this year were smarter. Many offered technology that let users have a more personalized experience. One such TV from the electronics company TCL uses sensors and voice recognition to determine who is watching. It then offers programming based on the specific user. Another TV from Panasonic offers a similar personalized user experience.
In addition to television technology, size also played a major part in CES 2013. Televisions varied in size from big to bigger, with at least two companies — Samsung and HiSense — exhibiting TVs measuring 110 inches.
The yearly Consumer Electronics Show is the biggest technology trade show in North America and one of the biggest in the world.
Gary Shapiro is president and CEO of the Consumer Electronics Association, the group that organizes CES. He gave one of the keynote speeches on opening day.
“Now you know that CES is more than a trade show. It’s a gathering of the brightest minds and the top leaders from many industries and those seeking a glimpse into the future.”
That glimpse into the future included a look at digital health and fitness devices, which were also big at CES 2013. There were devices that track your activity and others that measure blood pressure, heart rate and weight. There was even a fork that tells you when you are eating too fast.
Cars, smart-phones, tablet computers and PCs also made news. And a 27-inch table computer drew quite a bit of attention.
CEA President Gary Shapiro says there was much to see but not nearly enough time to see it all. “You cannot see the show in the four days that you have. We have over 3200 different industries showing over 20,000 new products. It’s absolutely incredible.”
【小题1】At the 2013 CES, which item drew the most attention?
| A．Cars. | B．Smart-phones. | C．Computers. | D．Televisions. |
| A．is bigger than the others | B．uses the technology of OLED |
| C．offers a personalized experience | D．can track your activity |
| A．CES is only a big trade show. |
| B．CES offers a glimpse into the future. |
| C．CES lasts only four days in all. |
| D．He thinks little of the new products’ quality. |
| A．HiSense | B．Panasonic | C．TCL | D．CEA |
| A．the CES is held every 4 years |
| B．at the 2013 CES, the TV section was crowded |
| C．if you watch TV every day, you needn’t see a doctor |
| D．tablet computers drew more attention at the 2013 CES |
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科目：高中英语 来源： 题型：阅读理解
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 |
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
Move Earth—It’s Not Science Fiction
LONDON—Scientists have found an unusual way to prevent our planet from overheating: move it to a cooler spot. All you have to do is send a few comets(彗星)in the direction of Earth, and its orbit will be changed. Our world will then be sent spinning into a safer, colder part of the solar system.
This idea for improving our climate comes from a group of US National Aeronautics and Space Administration(NASA)engineers and American astronomers. They say their plan could add another six billion years to the useful lifetime of our planet—effectively doubling its working life.
The plan put forward by Dr. Laughlin, and his colleagues Don Korycansky and Fred Adams, needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to Earth.
“Earth’s orbital speed would increase as a result and we would move to a higher orbit away from the Sun, ”Laughlin said.
Engineers would then direct their comet so that it passed close to Jupiter or Saturn. The comet would pick up energy from one of these giant planets. Later its orbit would bring it back to Earth, and the process would be repeated.
In the short term, the plan provides an ideal way to global warming, although the team was actually concerned with a much greater danger. The Sun is certain to heat up in about a billion years and so“seriously compromise” our biosphere(生物圈)—by cooking us.
That’s why the group decided to try to save Earth.
The plan has one or two worrying aspects, however. For a start, space engineers would have to be very careful about how they directed their asteroid or comet towards Earth. The smallest miscalculation(误算)in orbit could fire it straight at Earth—with deadly consequences.
There is also the question of the Moon. As the current issue of Scientific American magazine points out, if Earth was pushed out of its current position, it is“most likely the Moon would be stripped away from Earth”. This would greatly change our planet’s climate.
【小题1】What makes the scientists plan to move Earth?
| A．A few comets are moving to the direction of Earth. |
| B．Earth’s working life is coming to an end soon. |
| C．Earth will become too hot for mankind to keep alive. |
| D．The moon is moving farther and farther away from Earth. |
| A．12 billion | B．6 billion |
| C．18 billion | D．24 billion |
| A．The comet might hit Earth and man might lose the Moon. |
| B．Earth might be moved too far away and man might be frozen to death. |
| C．The comet might hit Jupiter or Saturn and never return to Earth. |
| D．Earth’s working life might be greatly shortened. |
| A．Provide. | B．Benefit. |
| C．Share. | D．Endanger. |
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科目：高中英语 来源： 题型：阅读理解
(2013·高考福建卷，B)Your glasses may someday replace your smartphone，and some New Yorkers are ready for the switch.Some in the city can’t wait to try them on and use the maps and GPS that the futuristic eyewear is likely to include.
“ I’d use it if I were hanging out with friends at 3 a．m.and going to the bar and wanted to see what was open，”said Walter Choo,40，of Fort Greene.
The smartphonelike glasses will likely come out this year and cost between $250 and $600，the Times said，possibly including a variation of augmented(增强的) reality，a technology already available on smartphones and tablets (平板电脑) that overlays information onto the screen about one’s surroundings.So，for example，if you were walking down a street，indicators would pop_up showing you the nearest coffee shop or directions could be plotted out and come into view right on the sidewalk in front of you.
“As far as a mainstream consumer product，this just isn’t something anybody needs，”said Sam Biddle，who writes for Gizmodo.com.“ We’re accustomed to having one thing in our pocket to do all these things，”he added，“and the average consumer isn’t gonna be able to afford another device (装置) that’s hundreds and hundreds of dollars.”
9to5Google publisher Seth Weintraub，who has been reporting on the smartphonelike glasses since late last year，said he is confident that this type of wearable device will eventually be as common as smartphones.
“It’s just like smartphones 10 years ago，”Weintraub said.“A few people started getting emails on their phones，and people thought that was crazy.Same kind of thing.We see people bending their heads to look at their smartphones，and it’s unnatural，”he said.“ There’s gonna be improvements to that，and this a step there.”
【小题1】One of the possible functions of the smartphonelike glasses is to ________.
| A．program the opening hours of a bar |
| B．supply you with a picture of the future |
| C．provide information about your surroundings |
| D．update the maps and GPS in your smartphones |
| A．develop rapidly |
| B．get round quickly |
| C．appear immediately |
| D．go over automatically |
| A．necessary for teenagers |
| B．attractive to New Yorkers |
| C．available to people worldwide |
| D．expensive for average consumers |
| A．may have a potential market |
| B．are as common as smartphones |
| C．are popular among young adults |
| D．will be improved by a new technology |
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