The sound of a mosquito can mean trouble in many parts of the world. The bite of the mosquito can be deadly. The insects carry serious diseases like malaria. It is estimated that almost 630,000 people died from malaria and malaria-related causes in 2012, and most of these cases were in African countries.
In the United States, a group of California scientists is working to develop a more effective and less costly substance(物質(zhì))to protect people from mosquitoes. The researchers are investigating the sense of smell in mosquitoes. They found the insects use the same receptor(感受器)for identifying carbon dioxide in human breath as they do for the smell of our skin. Anandasankar Ray, who is leading the investigation, says scientists tested more than a million chemical compounds(化合物)until they found a substance called Ethyl pyruvate. He says Ethyl pyruvate makes the mosquitoes' receptor inactive. ”When we apply Ethyl pyruvate to a human arm and offer it to hungry mosquitoes in a cage, very few of the mosquitoes are attracted to the human arm because only a few of them are able to smell it out,” said Ray.
Genevieve Tauxe, a member of the research team, says it was not easy to find the neurons (神經(jīng)元)of nose cells that recognise both the smell of human breath and skin. "With the device used to examine mosquitoes, we are able to insert a very small electrode(電極)into the part of the mosquitoes' nose, where its smelling neurons are and where the smell is happening," said Tauxe.
Anandasankar Ray says a product based on Ethyl pyruvate may cost less to produce than DEFT，the most effective chemical treatment now in use. He says DEFT is too costly for most people who live in areas affected by malaria.
“Perhaps by finding smells that can attack other target receptors, we will be able to improve upon DEFT and finally have the next generation of insect behavior control products," said Ray.
【小題1】The best title for the passage is most probably _______________________________.
| A．Scientists Find New Substance to Fight Mosquitoes |
| B．A New Generation of DEET Has Been Developed to Kill Mosquitoes |
| C．Malaria一a Serious Disease Causing 630,000 Deaths |
| D．Ethyl Pyruvate一an Insect Behavior Control Product |
| A．kill the mosquitoes' smelling neurons |
| B．cause the mosquitoes to lose their sense of smell |
| C．result in the inactiveness of the mosquitoes' receptor |
| D．make the mosquitoes uninterested in human breath and skin smell |
| A．inform readers of the new development in fighting mosquitoes |
| B．praise the achievements made in the battle against malaria |
| C．introduce a cheaper product in fighting mosquitoes |
| D．tell the differences between Ethyl Pyruvate and DEET |
| A．the column of newspaper ads |
| B．the health column of a magazine |
| C．a(chǎn) textbook of medical schools |
| D．a(chǎn) collection of doctors' essays |
【小題1】A
【小題2】C
【小題3】A
【小題4】B
解析試題分析: 蚊子的嗡嗡叫對于人們來說是個麻煩的問題，而它們的叮咬甚至有可能是致命的。所幸科學(xué)家們研究了一種能夠影響蚊子嗅覺的藥物，從而影響蚊子的叮人的行為。
【小題1】A。文章標題類題。通過文章最后一段we will be able to improve upon DEFT and finally have the next generation of insect behavior control products可知DEFT只是一種殺蚊藥，而文章主要講科學(xué)家研制出一種新的效果明顯花費低的藥品。側(cè)重點在于新的藥品。故選A。
【小題2】C。細節(jié)題。通過第二段He says Ethyl Pyruvate makes the mosquitoes' receptor inactive. 可知Ethyl Pyruvate會使蚊子的感受器遲鈍。故選C。
【小題3】A。作者態(tài)度觀點題。文章主要介紹了科學(xué)家研究一種能夠影響蚊子嗅覺的藥物，從而影響蚊子的叮人的行為。文章中作者只是客觀介紹藥物，并沒有表明自己是贊揚還是批評的觀點。故選A。
【小題4】B。文章類型推測題。A：報紙新聞板塊B：雜志的健康板塊C：醫(yī)學(xué)院的教科書D：醫(yī)學(xué)散文的文集。通過理解文章大意，故選B。
考點：考查科技類短文閱讀。
閱讀快車系列答案科目：高中英語 來源： 題型：閱讀理解
Most people know precious gemstones (寶石) by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It’s more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone’s origin.
Beneath the surface of a gemstone, on the tiny level of atoms and molecules（分子）, lie clues (線索) to its origin. At this year’s meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers (激光) to clarify these clues and identify a stone’s homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. “With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from,” McManus told Science News.
Some gemstones, including many diamonds, come from war-torn countries. Sales of those “blood minerals” may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones.
To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles（微粒）called electrons separate from atoms.
The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area produce similar patterns. Materialytics has already collected patterns from thousands of gemstones, including more than 200 from diamonds. They can compare the light pattern from an unknown gemstone to patterns they do know and look for a match. The light pattern acts like a signature, telling the researchers the origin of the gemstone.
In a small test, the laser technique correctly identified the origins of 95 out of every 100 diamonds. For gemstones like emeralds and rubies, the technique proved successful for 98 out of every 100 stones. The scientists need to collect and analyze more samples, including those from war-torn countries, before the tool is ready for commercial use.
Scientists like Barbara Dutrow, a mineralogist from Louisiana State University in Baton Rouge, find the technique exciting. “This is a basic new tool that could provide a better fingerprint of a material from a particular locality,” she told Science News.
【小題1】We learn from Paragraph 1 that __________.
| A．a(chǎn)n emerald and a ruby are names of diamonds. |
| B．it’s not difficult to tell where the gem was mined. |
| C．a(chǎn)ppearances help to identify the origin of gemstones. |
| D．diamonds from different places may appear the same. |
| A．To look for more gemstones. |
| B．To encourage violent civil wars. |
| C．To reduce the trade in blood minerals. |
| D．To develop the economy. |
| A．Heat can turn ice into water or water into steam. |
| B．Gemstones from the same area produce similar light patterns. |
| C．Laser can change a miniscule part of the gemstone into plasma. |
| D．Materialytics has already collected patterns from thousands of gemstones. |
| A．It is ready for commercial use. |
| B．People can use the new tool to find more gemstones. |
| C．It can significantly reduce the gemstones trade in blood minerals. |
| D．It will bring about a revolutionary change in identifying the origin of minerals. |
| A．tell us how to identify the origin of diamonds. |
| B．introduce a laser technique in identifying a stone’s origin |
| C．prove identifying the origin of gemstones are difficult |
| D．a(chǎn)ttract our attention to reducing trade in blood minerals |
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科目：高中英語 來源： 題型：閱讀理解
Is language, like food, a basic human need without which a child at a critical period of life can be starved and damaged? Judging from the experiment of Frederick in the thirteenth century, it may be. Hoping to discover what language a child would speak if he heard no mother tongue, he told the nurses to keep silent.
All the infants died before the first year. But clearly there was more than lack of language here. What was missing was mothering. Without good mothering, in the first year of life especially, the capacity to survive is seriously affected.
Today no such severe lack exists as that ordered by Frederick. Nevertheless, some children are still backward in speaking. Most often the reason for this is that the mother is insensitive to the signals of the infant, whose brain is programmed to learn language rapidly. If there sensitive periods are neglected, the ideal time for acquiring skills passes and they might never be learned so easily again. A bird learns to sing and to fly at the right time, but the process is slow and hard once the critical stage has passed.
Experts suggest that speech stages are reached in a fixed order and at a constant age, but there are cases where speech has started late in a child who eventually turns out to be of high IQ. At twelve weeks a baby smiles and makes vowel-like sounds; at twelve months they can speak simple words and understand simple commands; at eighteen months he has a vocabulary of three to five words. At three he knows about 1,000 words, which he can put into sentences, and at four his language differs from that of his parents in style rather than grammar.
Recent evidence suggests that an infant is born with the capacity to speak. What is special about man’s brain, compared with that of the monkey, is the complex system which enables a child to connect the sight and feel of, say, a toy-bear with the sound pattern “toy bear”. And even more incredible is the young brain’s ability to pick out an order in language from the mixture of sound around him, to analyze, to combine and recombine the parts of a language in new ways.
But speech has to be induced（激發(fā)，引起）, and this depends on interaction between the mother and the child, where the mother recognizes the signals in the children’s babbling（咿呀聲）,grasping and smiling, and responds to them. Insensitivity of the mother to these signals dulls the interaction because the child gets discouraged and sends out only the obvious signals. Sensitivity to the child’s nonverbal signals is essential to the growth and development of language.
【小題1】The writer mentioned the experiment of Frederick to __________.
| A．support his idea | B．introduce his topic |
| C．describe a new finding | D．give an example of his theory |
| A．prove that children are born with the ability to speak |
| B．discover what language a child would speak without hearing any human speech |
| C．find out what role careful nursing would play in teaching a child to speak |
| D．prove that a child could be damaged without learning a language |
| A．they are not able to learn language rapidly |
| B．they are exposed to too much language at once |
| C．their mothers do not respond enough to their attempts to speak |
| D．their mothers are not clever enough to help them |
| A．have a high IQ | B．be less intelligent |
| C．be insensitive to verbal signals | D．not necessarily be backward |
| A．A child is born with the ability to speak. |
| B．A child’s brain has a complex system which helps to connect the sight and feel of an object. |
| C．A child can produce his own sentences. |
| D．A child owes his speech ability to good nursing. |
| A．the infants will certainly die because of lack of language. |
| B．a(chǎn)ll children learn their language in fixed stages |
| C．the child’s brain is highly selective |
| D．insensitivity to the child’s non-verbal signals will not affect the development of the child’s language |
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科目：高中英語 來源： 題型：閱讀理解
The world itself is becoming much smaller by using modern traffic and modern communication means. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is no longer true.
Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO2 is now the most dangerous kind of air pollution. It is caused by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in pollution at the same time.
【小題1】 _________, our world is becoming much smaller.
| A．Because of the rise in pollution |
| B．Thanks to science development |
| C．Because the earth is being polluted day and night |
| D．Because the earth is blown away by the wind every year |
| A．much easier than | B．a(chǎn)s easy as |
| C．much harder than | D．a(chǎn)s hard as |
| A．rubbish | B．noise pollution |
| C．a(chǎn)ir pollution | D．water pollution |
| A．it makes much noise |
| B．it makes us angry more easily |
| C．it makes our rivers and lakes dirty |
| D．it’s bad for all living things in the world |
| A．Many countries are making rules to fight pollution. |
| B．The pollution of the earth grows as fast as the world population does. |
| C．The problem of pollution is not so serious because there are not so many people on the earth. |
| D．If people could go to work by bus or bike instead of car or motorbike, it would be helpful in fighting against the problem of SO2. |
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科目：高中英語 來源： 題型：閱讀理解
A new study shows students who write notes by hand during lectures perform better on exams than those who use laptops(筆記本電腦).
Students are increasingly using laptops for note-taking because of speed and legibility(清晰度).But the research has found laptop users are less able to remember and apply the concepts they have been taught.
Researchers performed experiments that aimed to find out whether using a laptop increased the tendency to make notes "mindlessly" by taking down word for word what the professors said
In the first experiment, students were given either a laptop or pen and paper .They listened to the same lectures and were told to use their usual note-taking skills. Thirty minutes after the talk , they were examined on their ability to remember facts and on how well they understood concepts.
The researchers found that laptop users took twice as many notes as those who wrote by hand. However, the typists performed worse at remembering and applying the concepts. Both groups scored similarly when it came to memorizing facts.
The researchers' report said, "While more notes are beneficial, if the notes are taken mindlessly, as is more likely the case on a laptop, the benefit disappears."
In another experiment aimed at testing long-term memory, students took notes as before but were tested a week after the lecture. This time, the students who wrote notes by hand performed significantly better on the exam.
These two experiments suggest that handwritten notes are not only better for immediate learning and understanding, but that they also lead to superior revision in the future.
【小題1】More and more students favor laptops for note-taking because they can .
| A．write more notes | B．digest concepts better |
| C．get higher scores | D．understand lectures better |
| A．skillful | B．mindless |
| C．thoughtful | D．tireless |
| A．examine the importance of long-term memory |
| B．stress the benefit of taking notes by hand |
| C．explain the process of taking notes |
| D．promote the use of laptops |
| A．a(chǎn) newspaper advertisement | B．a(chǎn) computer textbook |
| C．a(chǎn) science magazine | D．a(chǎn) finance report |
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科目：高中英語 來源： 題型：閱讀理解
Global Positioning Systems (全球定位系統(tǒng)) are now a part of everyday driving in many countries.These satellitebased systems provide turnbyturn directions to help people get to where they want to go.However，they can also cause a lot of problems，send you to the wrong place or leave you completely lost.Many times，the driver is to blame.Sometimes a GPS error is responsible.Most often，says Barry Brown，it is a combination of the two.
Barry Brown is with the Mobile Life Centre in Stockholm，Sweden.He told us about an incident involving a friend who had flown to an airport in the eastern United States.There he borrowed a GPSequipped car to use during his stay.Mr Brown says，“They just plugged in an address and then set off to their destination.And，then it wasn’t until they were driving for thirty minutes that they realized they actually put in a destination back on the West Coast where they lived.They actually put their home address in.So again，the GPS is kind of ‘garbage in garbage out’．”
Mr Brown says this is a common human error，but what makes the problem worse has to do with some of the shortcomings，or failures，of GPS equipment.He says，“One problem with a lot of the GPS units is they have a very small screen and they just tell you the next turn.Because they just give you the next turn，sometimes that means that it is not really giving you the overview that you would need to know that it’s going to the wrong place.”
Mr Brown says，“One of the things that struck us，perhaps the most important thing was that you have to know what you’re doing when you use a GPS.There are these new skills that people have developed.There are these new competencies (資格) that you need to have to be able to use a GPS because they sometimes go wrong.This goes against a common belief that GPS systems are for passive drivers who lack navigational skills.”
Barry Brown says to make GPS systems better we need a better understanding of how drivers，passengers and GPS systems work together.
【小題1】According to Barry Brow，in most cases，________are blame for the problems.
| A．human errors |
| B．GPS errors |
| C．errors caused by both drivers and GPS |
| D．errors caused by putting in a wrong address |
| A．GPS is nothing but garbage |
| B．GPS is still not accurate enough |
| C．it is difficult for drivers to use GPS equipment |
| D．sometimes drivers are responsible for the problem |
| A．it’s impossible to drive from the east to the west in the US |
| B．Barry Brown’s friend went to Stockholm，Sweden by plane |
| C．given wrong instructions，the GPS will produce wrong results |
| D．GPS systems are for passive drivers who lack navigational skills |
| A．It just tells the driver to turn once at a time. |
| B．It gives the driver the overview. |
| C．Its screen is too small to be seen clearly. |
| D．It is only suitable for passive drivers. |
| A．GPS systems are helpful for drivers. |
| B．Driving with GPS can be difficult to navigate (導(dǎo)航)． |
| C．Drivers should understand how GPS systems work. |
| D．Drivers should learn to use GPS systems correctly. |
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科目：高中英語 來源： 題型：閱讀理解
Password (密碼) strength has been a topic about the Internet lately. I have seen lots of clever methods for generating and remembering strong passwords. Some are better than others, but in my opinion, none are adequate. Here's the problem: It doesn't matter how strong your passwords are if you use the same one on multiple sites. All it takes is for a site to get hacked(侵入), like Gawker media, or even Sony did, and now your superstrong password has been stolen, and every site on which you used that password has been accessed.
So, the bottom line is that no matter how strong your passwords are, and no matter what clever tricks you use to help you remember them, if you surf internet often, the only truly secure password system is what you need.
Enter LastPass. It's not the only password manager out there, but I like it the best. You create ONE strong password that you have to memorize and use it to access your LastPass database. The LastPass database is stored online, on LastPass's servers. LastPass recognizes the site you're on and automatically logs you in (after, optionally, asking you to reenter your master password). LastPass also has automatic form fill and automatic password generation. This means that you can have a different, unique, very strong password for every site you log into, but you only have to remember one master password. It's the best of both worlds.
One argument against LastPass is that if their database is attacked, then all of your sites are in danger, and that's true, but given that their entire line of work is keeping that information safe, I'm willing to take that chance. The alternative is rolling dice(擲骰子) or picking phrases to create passwords, writing all of them down on a piece of paper or something, and then having to manually type them in when I go to a site. A terrible mess.
There is a free version of LastPass, with some additional features unlocked if you pay a $12 a year subscription.
Joshua Bardwell
【小題1】The writer thinks using the same password everywhere is ________.
| A．dangerous | B．convenient |
| C．a(chǎn)ppropriate | D．a(chǎn)dequate |
| A．a(chǎn)ll passwords used |
| B．the last password |
| C．unique password each time |
| D．the master password only |
| A．they have better ways to create password |
| B．they think rolling dice is more convenient |
| C．they have no faith in Lastpass database's safety |
| D．Gawker media and Lastpass were hacked once |
| A．share his experience |
| B．introduce a product of good quality |
| C．a(chǎn)dvertise his product |
| D．teach how to use a new product |
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科目：高中英語 來源： 題型：閱讀理解
The first robot rover to land on the Moon in nearly 40 years, China's Jade Rabbit, has begun sending back photos, with shots of its lunar lander(登月飛行器). Jade Rabbit rolled down a ramp lowered by the lander and on to the volcanic plain known as Sinus Iridum at 04：35 Beijing time on Saturday (20：35 GMT)．It moved to a spot a few metres away, its historic short journey recorded by the lander. On Sunday evening the two machines began photographing each other. A Chinese flag is clearly visible on the Jade Rabbit as it stands deployed on the Moon's surface.
Ma Xingrui, chief mander of China's lunar programme, declared the mission (任務(wù))a “plete success”. The first soft landing on the Moon since 1976 is the latest step in China's ambitious space programme, says BBC science reporter Paul Rincon.
The lander will operate there for a year, while the rover is expected to work for some three months. The Chang'e3 mission landed some 12 days after being launched atop a Chinesedeveloped Long March 3B rocket from Xichang in the country's south. The official Xinhua news service reported that the lander began its descent(下降)on Saturday just after 13：00 GMT, touching down in Sinus Iridum (the Bay of Rainbows) 11 minutes later. “I was lucky enough to see a prototype rover(原型月球車) in Shanghai a few years ago it's a wonderful technological achievement to have landed，” Prof Andrew Coates, from UCL's Mullard Space Science Laboratory, told BBC News.
Chang'e3 is the third unmanned rover mission to touch down on the lunar surface, and the first to go there in more than 40 years. The last was an 840kg (1,900lb) Soviet vehicle known as Lunokhod2, which was kept warm by polonium(釙)210. But the sixwheeled Chinese vehicle carries a more sophisticated payload(復(fù)雜的有效負荷), including groundpenetrating radar which will gather measurements of the lunar soil and crust.
【小題1】What does the text mainly talk about?
| A．China's space and aeronautics industry develops quickly. |
| B．The importance of China's space and aeronautics industry. |
| C．China's Jade Rabbit Moon rover sends back first photos. |
| D．Chang'e3 is the third unmanned rover mission to touch down on the lunar surface. |
| A．nearly 40 | B．37 |
| C．64 | D．more than 40 |
| A．do some research about the moon |
| B．be the first settler on the moon |
| C．to plant the Chinese flag onto the moon |
| D．send a lovely jade rabbit onto the moon |
| A．13：00 | B．20：00 |
| C．22：00 | D．21：00 |
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科目：高中英語 來源： 題型：閱讀理解
Want to travel as cheaply as possible while enjoying the great scenery as much as you like?
Backpacking is the way. As the most popular traveling choice among young western people, backpacking allows you to travel at your own free will. Carrying a tent, sleeping bag and clothes, backpackers also need to pack an attitude that will help them deal with many mental and physical challenges.
It is a thrill to put our ability to test and challenge ourselves with sorts of difficulties we might come across. So, backpacking is something young people can hardly deny.
Young people in Europe often travel around by train. Now, with plane tickets dropping in price, more are traveling to distant countries, such as Australia and China. And some just travel within their own countries.
But no matter where a backpacker travels, planning in advance is important if he or she wants to enjoy the trip.
Clothing
In summer, light, waterproof clothes are best. Backpackers must remember to travel lightly and not pack too many clothes.
Medicine
There are many medicines, especially for summer, such as those for sunstroke, snake bites and mosquitoes. Others are useful in every season, such as those for common colds, poisoning and diarrhea.
Cards
Three types of cards are of great value for backpacks: student Identity Card, personal ID and a credit card.
A student ID card can be helpful for saving money. It often gets train tickets and entrance tickets for cheaper prices in many Western countries.
Personal ID card can, not only get you out of trouble with local police, but also prove useful in all sorts of other situations.
Carrying a credit card can be a safe way of carrying money, as cash can easily get lost, stolen or wet.
And of course, don’t forget to enjoy your trip!
【小題1】What does the underlined sentence mean?
| A．Backpackers also need to be in high spirits when they want to travel. |
| B．Backpackers may also face dangerous situations. |
| C．Backpackers also need to talk with doctors about their traveling. |
| D．Backpackers need to make preparation for many kinds of difficulty in advance. |
| A．Easy to wash. | B．Not letting water go through. | C．Washed without water. | D．Used in water. |
| A．your student ID | B．your credit card | C．your personal ID | D．your passport |
| A．They can travel very easily. |
| B．They won’t worry about where to live. |
| C．They can have the chance to take some adventures. |
| D．They can take some physical exercise. |
| A．To give some ideas about traveling. |
| B．To encourage the young to travel. |
| C．To tell people how to avoid something unpleasant. |
| D．To offer some useful advice for traveling. |
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