Hu Li's heart sank due to the color of the air.Driving 140 kilometers from Tianjin City to Beijing last week,she held her breath as the air became a charcoal grey haze(炭灰色的陰霾).The 39yearold businesswoman has lived in Beijing for a decade,and this past month,she said,brought the worst air pollution she has ever seen.It gave her husband a cough and left her sevenyearold daughter housebound(足不出戶).“My husband as well as I is working here,so we have no choice,” she said.“But if we had a choice,we'd like to escape from Beijing.”
The extended heavy pollution over the last month,which caused punishment in return for a day last week-called the “airpocalypse” by internet users- has largely changed the way that Chinese think about the country's air.On one day,pollution levels were 30 times higher than levels considered safe by the World Health Organization (WHO).Flights were cancelled.Roads were closed.One hospital in east Beijing reported they had treated more than 900 children for breathing issues.Bloomberg found that for most of January,Beijing's air was worse than that of an airport smoking area.
The smog's(煙霧) most threatening aspect is its high concentration(濃度) of PM 2.5 - particulate matter that is small enough to breathe deep into the lungs and enter the bloodstream,causing breathing infections,lung cancer and possibly damaging children's development.The WHO has estimated that outdoor air pollution accounts for two million deaths per year,65% of them in Asia.
【小題1】Which conclusion can we draw from the first paragraph?
A.Hu Li is living in Beijing. |
B.Hu Li traveled to Tianjin for business. |
C.The haze is harmful to people. |
D.The pollution is the worst in Beijing's history. |
A.the way they traveled |
B.the opinion about national air |
C.the way they lived their life |
D.the life style of internet |
A.can lead to choke |
B.can cause heart cancer |
C.will damage children's development |
D.will damage people's organ |
A.Hu Li's attitudes to Beijing's haze |
B.The damages of Beijing's haze |
C.WHO suggests improving Beijing's air |
D.What caused air pollution in Beijing |
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科目:高中英語 來源: 題型:閱讀理解
Have you ever dreamed of visiting a planet in the Milk Way? While the trip sounds exciting, it would take years and years to reach your destination. So in the future, bedtime for astronauts may be more than a few hours of regular shut-eye. They would have to sleep for years.
European researchers are now conducting hibernation experiments. The study may help them understand whether humans could ever sleep through the years it would take for a space flight to distant planets. "If there was an effective technology, it could make deep-space travel a reality," said Mark Ayre of the European Space Agency last month.
What seems like science fiction is not completely unlikely. Researchers have been able to use chemicals to put living cells into a sleep-like state where they don't age. They have now moved on to small, non-hibernating mammals like rats. The results will be out by the end of 2004.
A major challenge is the fact that cells can be very simple systems, whereas body organs are far more complex.
"It's like moving from a simple Apple computer to a supercomputer," said Marco Biggiogera, a hibernation researcher at Italy's University of Pavia.
Just like bears and frogs, the hibernation of human beings would cause a person's metabolism (新陳代謝) to lower so they would need less energy.
Medical research, however, is just half of a space flight hibernation system.
There is the challenge of designing a suitable protective shelter. Such a shelter would provide the proper environment for hibernation, such as the proper temperature. It would also have to monitor (監(jiān)控) life functions and serve the physiological needs of the hibernator.
According to Ayre, the six-person Human Outer Planets Exploration Mission to Jupiter's moon (木星的衛(wèi)星) Callisto, could be an opportunity to use human hibernation. The mission aims to send six humans on a five-year flight to Callisto, where they will spend 30 days, in 2045.
【小題1】European researchers are conducting hibernation experiments to ________.
A.ensure astronauts to get a complete sleep |
B.find the secret of some creatures |
C.make preparations for the journey to Jupiter’s moon Callisto |
D.know if man can sleep for years |
A.Science fiction is people’s imagination. |
B.Science fiction is imaginative, but it can be realized. |
C.Things seem impossible may come true. |
D.Things described in science fiction are sure to become true. |
A.putting living cells into a sleep-like state is full of failure |
B.Biggiogera is confident with the experiment |
C.human’s hibernation needs no energy |
D.medical research is the key to space flight hibernation system |
A.Six humans to fly to Callisto |
B.Human hibernation improves health |
C.Space travel attracts people |
D.Deep sleep for deep space travel |
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科目:高中英語 來源: 題型:閱讀理解
The extraordinary Eastgate Building in Harare, Zimbabwe’s capital city, is said to be the only one in the world to use the same cooling and heating principles as the termite mound(白蟻堆).
Architect Mick Pearce used precisely the same strategy when designing the Eastgate Building, which has no air-conditioning and almost no heating. The building—the country’s largest commercial and shopping complex—uses less than 10% of the energy of a conventional building of its size. The Eastgate’s owners saved $3.5 million on a $36 million building because an air-conditioning equipment didn’t have to be imported.
The complex is actually two buildings linked by bridges across a shady, glass-roofed atrium(天井) open to the air. Fans suck fresh air in from the atrium, blow it upstairs through hollow spaces under the floors and from there into each office through baseboard vents(通風(fēng)口). As it rises and warms, it is drawn out via ceiling vents and finally exists through forty-eight brick chimneys.
During summer’s cool nights, big fans blow air through the building seven times an hour to cool the empty floors. By day, smaller fans blow two changes of air an hour through the building, to circulate the air which has been in contact with the cool floors. For winter days, there are small heaters in the vents.
This is all possible only because Harare is 1600 feet above sea level, has cloudless skies, little dampness and rapid temperature changes—days as warm as 31℃ commonly drop to 14℃ at night. “You couldn’t do this in New York, with its hot summers and cold winters,” Pearce said.
The engineering firm of Ove Arup&Partners monitors daily temperatures. It is found that the temperature of the building has generally stayed between 23℃ and 25℃, with the exception of the annual hot period just before the summer rains in October and three days in November, when a doorkeeper accidentally switched off the fans at night. And the air is fresh—far more so than in air-conditioned buildings, where up to 30% of the air is recycled.
【小題1】Why was Eastgate cheaper to be built than a conventional building?
A.It was designed in a smaller size. |
B.No air conditioners were fixed in. |
C.Its heating system was less advanced. |
D.It used rather different building materials. |
A.Fresh air from outside. | B.Heat in the building. |
C.Hollow space. | D.Baseboard vent. |
A.New York has less clear skies as Harare. |
B.Its dampness affects the circulation of air. |
C.New York covers a larger area than Harare. |
D.Its temperature changes seasonally rather than daily. |
A.a(chǎn)llows a wide range of temperatures |
B.functions well for most of the year |
C.can recycle up to 30% of the air |
D.works better in hot seasons |
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科目:高中英語 來源: 題型:閱讀理解
Scientists who discovered a new way of generating electricity from water say they may have come across an alternative source of clean energy to rival wind and solar power.
The breakthrough, which scientists say is the first new way to generate electricity in 160 years, could lead to batteries that use water instead of poisonous substances.
The scientists made the discovery when they were investigating what happens when tap water is forced through extremely narrow glass tubes. Water squeezed down the tubes, each of which was narrower than a tenth the thickness of a human hair, generating a small electric current that ran the length of the tube. To produce a larger electric current, the team tried forcing water through a glass water filter(濾水器)that contained thousands of narrow channels lined up side by side. “When we took a syringe(注射器)of water and squeezed it through the filter, we got enough power to light a light bulb,” said Larry Kostiuk of the University of Alberta in Canada. “The harder you push the syringe, the more electric current you get.”
The current is produced because of an effect in the glass tubes. When they are filled with water, positively charged ions(陽離子)fixed in the tubes are washed away, leaving a slight negative charge on the glass surface. When water is then forced along the tube, the surface repels negatively charged ions in the water while positively charged ions are attracted down the tube. The result is a net flow of positively charged ions that sets up an electric current.
According to Dr Kostiuk, no one has ever thought to use water to produce electricity in this way. “The last time someone came up with a way of generating electricity was Michael Faraday in 1839,” he said. “So this is the first new way of generating electricity in 160 years, which is why we are so excited about it.”
Dr Kostiuk says water batteries might one day be used to power mobile phones and calculators, but admitted that the engineering challenges might make other applications more realistic. “You’d need to be sure it wouldn’t leak, and you’d need to make sure it wouldn’t freeze,” he said.
More likely would be to install the electricity-generating devices where water is already being pumped, such as at city water filtration sites, he said. “It could compete with wind and solar power,” he added.
【小題1】What does the passage mainly want to tell us about?
A.A kind of solar power discovered by scientists. |
B.A kind of new energy source found in tap water. |
C.The breakthrough to generate electricity 160 yeas ago. |
D.A kind of new battery invented without poisonous substances. |
A.rejects | B.identifies | C.a(chǎn)ttracts | D.rebels |
A.They were the first to find a new way to produce electricity. |
B.They could make an electric current to light a light bulb. |
C.Their discovery could be used to invent water batteries. |
D.Their discovery was made 160 years earlier than Faraday’s. |
A.They must be used to power mobile phones and calculators. |
B.They have some possible disadvantages like water leaking. |
C.They would be needed greatly at city water filtration sites. |
D.They would be better than wind and solar power. |
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科目:高中英語 來源: 題型:閱讀理解
Mulch is a protective cover of material that is spread on top of soil.It is usually made out of organic material, like crop waste.Farmers may keep the remains of maize or other crops on top of the soil.This creates mulch on the soil surface.The plant remains help protect the soil against wind and water damage.Mulching is one of the best things people can do for their plants.It also helps keep the soil from getting dry, and reduces the need for watering plants.It also limits temperature changes in the soil.And it stops unwanted plants, or weeds,from growing.
Organic mulch improves the condition of soil.As the mulch breaks down, it provides material which keeps the soil from getting hard.This improves the growth of roots and increases the movement of water through the soil.It also improves the ability of the soil to hold water. Organic mulch contains nutrients for plants.It also provides a good environment for earthworms and other helpful organisms in the soil.
It is easy to find organic mulch materials.Cutup leaves and small pieces of tree bark can be used.Grass cuttings are also a good mulch for plants. Mulch from newspapers works well in controlling weeds.
The best time to add mulch depends on your goal.Mulch provides a thick barrier between the soil and the air.This helps to reduce temperature changes in the soil. As a result,mulched soil will be cooler than other soil in the summer.In winter, the mulched soil may not freeze as deeply as other soil.The best time is after the ground has frozen, but before the coldest weather arrives.Spreading mulch before the ground has frozen may attract small animals searching for a warm place to spend the winter.Delaying the spreading should prevent this problem.The animals will probably find another place to live.
【小題1】The author tells us the following EXCEPT________.
A.what mulch is and its benefits |
B.the best time to add mulch |
C.what can be mulched on the soil surface |
D.the bad effects of mulch |
A.tree barks | B.cutup leaves |
C.grass cuttings | D.plastic |
A.Protecting the soil against wind and water damage. |
B.Keeping the soil wet and reducing the need for watering plants. |
C.Reducing temperature changes in the soil and stopping unwanted weeds growing. |
D.All of the above. |
A.improve the condition of soil |
B.improve the ability of the soil to hold water |
C.provide a good environment for earthworms |
D.improve the growth of roots and increase the movement of water through the |
A.the best time to add mulch is in spring and summer |
B.the best time to add mulch is after the coldest weather arrives |
C.the best time to add mulch depends on weather |
D.choosing the best time to add mulch can avoid attracting small animals |
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科目:高中英語 來源: 題型:閱讀理解
(2013·高考安徽卷,B)Using too much water or throwingrubbish into our rivers are clear ways that humans can put our water supply in danger,but we also affect our water supply in less obvious ways.You may wonder how paving(鋪砌) a road can lead to less useable fresh water.A major part of the water we use every day is groundwater.Groundwater does not come from lakes or rivers.It comes from underground.The more roads and parking lots we pave,the less water can flow into the ground to become groundwater.
Human activity is not responsible for all water shortages(短缺).Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall,but in any case,good management can help to make sure there is enough water to meet our basic needs.
Thinking about the way we use water every day can make a big difference,too.In the United States,a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live,but there’s a lot we can do to lower the number.
You can take steps to save water in your home.To start with,use the same glass for your drinking water all day.Wash it only once a day.Run your dishwasher (洗碗機(jī))only when it is full.Help your parents fix any leaks in your home.You can even help to keep our water supply clean by recycling batteries instead of throwing them away.
【小題1】Which of the following is most likely to lead to less groundwater?
A.Using river water. |
B.Throwing batteries away. |
C.Paving parking lots. |
D.Throwing rubbish into lakes. |
A.All water shortages are due to human behavior. |
B.It takes a lot of effort to meet our water needs. |
C.There is much we can do to reduce family size. |
D.The average family in America makes proper use of water. |
A.show us how to fix leaks at home |
B.tell us how to run a dishwasher |
C.prove what drinking glass is best for us |
D.suggest what we do to save water at home |
A.Why paving roads reduces our water |
B.how much we depend on water to live |
C.why droughts occur more in dry climates |
D.how human activity affects our water supply |
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科目:高中英語 來源: 題型:閱讀理解
BEIJING - By the end of 2011 China-made supercomputers will say goodbye to foreign microchips(微芯片) and start using their own "Chinese core(核心)", according to one of the country's leading scientists, Hu Weiwu.
Hu told reporters on Saturday that the "Dawning 6000" supercomputer, developed by the Institute of Computing Technology of CAS and the Dawning Information Industry Company (DIIC), will adopt Loongson microchips for the first time as its core parts. It will have a computing speed of more than 1,000 trillion operations a second.
Making supercomputers with Chinese microchips is one of the nation's major science and technology projects. Three organizations - the Institute of Computing Technology of CAS, Jiangnan Institute of Computing Technology and the National University of Defense Technology (NUDT) - have their own supercomputer projects.
According to their schedules, all three institutions will need to meet the target of using domestically(國內(nèi)的) developed microchips by the end of this year. Hu said the new supercomputer will use fewer than 10,000 Loongson microchips, and will also be more energy-efficient.
Tianhe-1A, developed by NUDT in Hunan's provincial capital Changsha, is the fastest supercomputer in the world. However, Tianhe-1A largely runs on 14,336 CPUs made by Intel, and 7,186 GPUs (processing units) from Nvidia, two US chip-makers.
Hu said there will be difficulties ahead as there is little affiliated equipment specially developed for these supercomputers. "We have enough supercomputers in China but still can't make full use of them," He said.
Hu added that although the China-made CPUs have improved since they were first produced in 2002, they have a long way to go to compete with US chip-makers such as Intel.
【小題1】What’s the best title for this passage?
A.The Arrival of Chinese Supercomputers |
B.Homemade CPUs with a Long Way to Go |
C.The Supercomputers of Three Organizations in China |
D.Homemade CPUs on the Way for Local Supercomputers |
A.Dawning 6000 | B.Loongson microchips |
C.DIIC | D.Tianhe-1A |
A.cheap | B.suitable | C.expensive | D.modern |
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科目:高中英語 來源: 題型:閱讀理解
You don't need to get in a time-traveling machine to see how technology will reshape our lives, such as the way we shop.Several new technologies that are to change your buying habits already exist.Let's see what's in store for your future shopping.
Try it on, virtually (虛擬的).Want to shop online for a new pair of eyeglasses? You don't need to guess which pair looks best on you. Go and see the eBay Fashion iPhone app to try a pair of eyewear you're checking out on a picture of your face.But what if you want to buy something bigger? Thanks to Microsoft Kinect's motion tracking camera, you can cover clothes on your screen body.You can even choose the background of your virtual fitting room to enrich your shopping experience.
Get a perfect, custom fit.Everyone's body is shaped differently.To get a perfect fit, you sometimes have to get your clothes changed.But by using 3D scanning technology, all the clothes you buy will fit your body perfectly.Some companies scan your body using High-tech to get the most accurate measurements, so they can make special clothes just for you.
High-tech shopping carts and checkout counters.High-tech shopping carts could, in time, be a common sight in malls and supermarkets.Microsoft Kinect-enabled carts are currently under test.The cart can follow you along the aisles (通道), controlled merely by your movement and your voice.In China, a supermarket chain introduced tablet-equipped carts that guide shoppers around the stores' aisles.
In the United States, several supermarkets use a device called Scan It that gives buyers the freedom to scan purchases on their own while they shop.While it's great not having to line up at a checkout counter, we wouldn't mind it if the store used Toshiba's new Object Recognition Scanner.The machine identifies a product as soon as it's placed in front of a camera just by its shape and color, even if it has no bar code.
【小題1】What's the best title for this text?
A.Ways for future shopping |
B.Influence of new technology |
C.Inventions to change habits |
D.A new time-traveling machine |
A.make vivid pictures of our face |
B.help us sell more clothes online |
C.create us a virtual dressing room |
D.choose suitable eyeglasses for us |
A.Object Recognition Scanner. |
B.The eBay Fashion iPhone app. |
C.3D scanning technology. |
D.Microsoft Kinect-enabled carts. |
A.the customer's voice |
B.its shape and color |
C.the customer's movement |
D.the bar code on it |
A.Checkout counters will disappear from supermarkets in future. |
B.Buyers can use Scan It to go around the supermarket by themselves. |
C.High-tech shopping carts will be widely used in malls and supermarkets. |
D.The new technologies are only dreams that are impossible to come true. |
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科目:高中英語 來源: 題型:閱讀理解
US military is attempting to develop a new style “insect robot” to replace the human soldier to go wherever he can’t. The greatest trouble this project has fallen across is how to enable the robot to fly freely like an insect, said an official of the Pentagon(五角大樓).
The Pentagon is seeking for the cooperation with scientists in hope of developing a new technique by which people can control the insect’s flight direction and pass on the information its eyes or other organs catch through the equipment set in its body, the official said.
It is thus designed that a tiny controlling chip will be equipped in an insect’s body when it is in chrysalis(蛹). As the insect grows, the cut made when fixing in the chip will be recovered. The chip will exist in forever. Scientists believe this won’t influence the insect, sound growth or the functions of internal organs.
The terminal target of the project is to set up a global system, in which the insect robots will be stationed in all parts of the world and stick to their posts till a new instruction is received. At that time the military can receive from all over the world clear image information within about 5 meters of the insects and that of a special target within 100 meters.
Years ago, Defense Advanced Research Projects Agency of US DOD(國防部) spent $3,000,000 carrying out a plan for training bees to detect landmines. But, no new progress has so far been made.
“According to the scientists, there is still enormous difficulty in technology in turning it into reality, such as the insects reproduction(繁殖), their adaptation to the surroundings and temperature and so on. However, this project is really challenging. If successful, it is equal to making countless small drone(無人機(jī)),”said the official of DOD.
【小題1】According to the description of the passage, what is an insect robot like?
A.An insect made of a certain metal. |
B.A robot looking like an insect. |
C.An insect with a chip in its body. |
D.A tiny flying robot. |
A.There must be a controlling chip well connected with the insect’s brain. |
B.The insect’s eyes and other organs must be replaced by some special equipment. |
C.All the insect’s concerned organs must be controlled by a chip. |
D.The insect must be so well trained as to make full use of its organs. |
A.have a clear picture of almost every part of the world |
B.have insect robots from all over the world |
C.see clearly the things within 10 to 100 meters |
D.get many insects which obey their orders |
A.They can’t keep sound growth of the insects. |
B.They can’t ensure the insects to produce their young. |
C.They can’t fix a chip in an insect. |
D.They can’t make sure the internal organs function well. |
A.Leading. | B.Vital. | C.Moral. | D.Final. |
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