400-year-old plants from the Little Ice Age were brought back to life, which could help us understand how the Earth will deal with climate change.
Moss(藓类植物) found buried beneath the Teardrop glacier(冰川) on Ellesmere Island in Canada has been brought back to life. Findings suggest that these plants could help repopulate regions exposed by melting ice caps. Plants that were buried beneath thick ice in Canada more than 400 years ago and were thought to have frozen to death have been brought back to life by Canadian scientists.
Samples of the moss plant, covered by the glacier during the Little Ice Age of 1550 to 1850 AD, were replanted in a lab at the University of Alberta and grew new stems(茎). Researchers now think these findings can give indication as to how regions can recover as the ice covering them melts.
Biologist Dr. Catherine La Farge and her team at the University of Alberta were exploring the region around the Teardrop glacier on Ellesmere Island. Ice on Ellesmere Island region has been melting at around four meters each year for the past nine years. This means that many areas of land that were previously covered by ice have since been exposed. Many ecosystems that were thought to have been destroyed during the Little Ice Age between 1550 and 1850 AD can now be studied, including many species that have never been studied before.
While examining an exposed area of land, La Farge and her team discovered a small area of moss called Aulacomnium turgidum. It is a type of bryophyte(苔藓类植物) plant that mainly grows across Canada, the US and the Highlands of Scotland.
Dr La Farge noticed that the moss had small patches of green stems, suggesting it is either growing again or can be encouraged to repopulate. Dr La Farge told the BBC, “When we looked at the samples in detail and brought them to the lab, I could see some of the stems actually had new growth of green branches, suggesting that these plants are growing again, and that blew my mind. When we think of thick areas of ice covering the landscape, we’ve always thought that plants have to come from refugia(濒绝生物保护区), never considering that land plants come from underneath a glacier. It’s a whole world of what’s coming out from underneath the glacier that really needs to be studied. The ice is disappearing pretty fast. We really have not examined all the biological systems that exist in the world; we don’t know it all.”
Dr La Farge took samples of the moss and, using carbon-dating techniques, discovered that the plants date back to the Little Ice Age. Dr La Farge’s team took the samples, planted them in dishes full of nutrient-rich potting soil and fed them with water.
The samples were from four separate species including Aulacomnium turgidum, Distichium capillaceum, Encalypta procera and Syntrichia ruralis. The moss plants found by Dr La Farge are types of bryophytes. Bryophytes can survive long winters and regrow when the weather gets warmer.
However, Dr La Farge was surprised that the plants buried under ice have survived into the twenty-first century. Her findings appear in proceedings（论文集）of the National Academy of Sciences.
【小题1】Dr La Farge’s research is of great importance to ________.
| A．knowing what the plants during the Little Ice Age were like |
| B．understanding how ecosystems recover from glaciers. |
| C．regrowing many species that have been destroyed before. |
| D．figuring out the effects of melting ice caps on moss. |
| A．surprised me | B．greatly frightened me |
| C．put my doubt out of my mind | D．was exactly what I had in my mind |
| A．lives better in small groups |
| B．is very active in hot weather |
| C．is strong enough to survive coldness |
| D．is chosen from Canadian refugia |
| A．Bryophyte ecology is greatly affected by climate change. |
| B．400-year-old moss’s survival is a mystery to solve. |
| C．Moss in ancient times was discovered in Canada. |
| D．400-year-old plants were brought back to life. |
【小题1】B
【小题2】A
【小题3】C
【小题4】D
解析试题分析：文章介绍了生物学家凯瑟琳La Farge博士和她的团队发现400年前冰封在冰川里的苔藓类植物，在带回实验室后放置在营养丰富的土壤中，浇水之后又再次生长。研究表明即使冰封四百年的植物在适宜条件下还会复活。
【小题1】推理题：根据第二段中“Findings suggest that these plants could help repopulate regions exposed by melting ice caps. ”研究表明这些植物可以重新覆盖冰帽融化地区。由此可知当地的生态系统可从冰川中恢复过来。故选B。
【小题2】推理题：根据第六段中“I could see some of the stems actually had new growth of green branches, suggesting that these plants are growing again, and that blew my mind.”我可以看到一些绿色的茎有新的增长,表明这些植物可以再次增长,这出乎我的意料。划线部分意思是“出乎意料”，只有A选项符合语意。故选A。
【小题3】细节题：根据第八段中“Bryophytes can survive long winters and regrow when the weather gets warmer.”苔藓植物可以在漫长的冬季存活和当天气变暖时再生。 Aulacomnium turgidum是苔藓类植物中一种，因此也可在寒冷中存活。故选C。
【小题4】推理题：根据文章内容可知冰封400年的植物也可以在适合温度中再次复活。故选D。
考点：考查科学研究类阅读
科目：高中英语 来源： 题型：阅读理解
Chinese parents are very generous when it comes to educating their children. Not caring about the money, parents often send their children to the best schools or even abroad to England, the United States or Australia. They also want their children to take extra-course activities where they will either learn a musical instrument or ballet, or other classes that will give them a head start in life. The Chinese believe that the more expensive an education is, the better it is. So parents will spend an unreasonable amount of money on education. Even poor couples will buy a computer for their son or daughter.
However, what most parents fail to see is that the best early education they can give their children is usually very cheap.
Parents can see that their children’s skills vary, skilled in some areas while poor in others. What most parents fail to realize, though, is that today’s children lack self-respect and self-confidence.
The problem is that parents are only educating their children on how to take multiple-choice tests and how to study well, but parents are not teaching them the most important skills they need to be confident, happy and clever.
Parents can achieve this by teaching practical skills like cooking, sewing and doing other housework.
Teaching a child to cook will improve many of the skills that he will need later in life. Cooking demands patience and time. It is an enjoyable but difficult experience. A good cook always tries to improve his cooking, so he will learn to work hard and gradually finish his job successfully. His result, a well-cooked dinner, will give him much satisfaction and a lot of self-confidence.
Some old machines, such as a broken radio or TV set that you give your child to play with will make him curious and arouse his interest. He will spend hours looking at them,tying to fix them ,your child might become an engineer when he grows up. These activities are not only teaching a child to read a book, but rather to think, to use his mind. And that is more important.
【小题1】Parents in China according to this passage .
| A．are too strict with their children |
| B．are too rich to educate their children |
| C．have some problems in educating their children correctly |
| D．have no problems in educating their children strictly |
| A．the parents’ ideas of educating their children |
| B．the education system of the school |
| C．children’s skills in cooking at home |
| D．children’s hobbies in the classroom |
| A．learn how to serve their parents |
| B．learn how to become strong and fat |
| C．get a lot from it and prepare themselves for the future |
| D．make their parents believe that they are clever |
| A．broken radios and television sets are useful |
| B．one’s interest and curiosity may be useful for his later life |
| C．an engineer must fix many broken radios |
| D．a good student should spend much time repairing radios |
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科目：高中英语 来源： 题型：阅读理解
China is going green. In order to reduce air pollution and oil shortages, automobile manufacturers have announced their plans to develop hybrid vehicles (混合燃料汽车) for the Chinese market. Toyota's hybrid car Prius will be ready to drive in China this week. Let's have a look at the new car.
Any vehicle is a hybrid when it combines two or more sources of power. Hybrid cars run off a rechargeable battery and gasoline. Hybrid cars have special engines, which are smaller than traditional gasoline engines. They run at 99 percent of their power when the car is cruising (匀速行驶). A specially designed battery motor provides extra power for running up hills or when extra acceleration is needed.
Step into a Prius, and turn on the engine. The first thing you notice is how much quieter it is than a traditional car. At this point, the car's gasoline engine is dormant (休眠). The electric motor will provide power until the car reaches about 24 km/h. If you stay at a low speed, you are effectively driving an electric car, with no gasoline being used, and no waste gas gives off.
The onboard (车载的) computer makes the decision about when to use a gas engine, when to go electric, and when to use a combination of the two. If you go over 24 km/h, when you step on the gas pedal (油门), you are actually telling the computer how fast you want to go.
The electronic motor recharges automatically using a set of batteries. When driving at high speed, the gasoline engine not only powers the car, but also charges the batteries. Any time you use the brake, the electric motor in the wheels will work like a generator and produce electricity to recharge the batteries. As a consequence, the car's batteries will last for around 200,000 miles.
【小题1】The author writes this passage mainly to________.
| A．teach people how to drive a hybrid car |
| B．introduce a new kind of “green” car |
| C．show how to save their gasoline when driving a car |
| D．announce plans to develop hybrid vehicles for China |
| A．The hybrid cars reduce air pollution and oil shortages. |
| B．The car's gasoline engine doesn't work until it reaches about 24 km/h. |
| C．This kind of car is completely controlled by an onboard computer. |
| D．A specially designed battery motor provides extra power when needed. |
| A．They are powered by both a rechargeable battery and gasoline. |
| B．They are much quieter than traditional cars. |
| C．They only use 99 percent of their power to run up hills. |
| D．They have smaller engines than traditional gasoline ones. |
| A．The batteries can be recharged at any time you want. |
| B．Using the brake suggests that the gasoline engine should work. |
| C．The batteries will last for 200, 000 miles without being recharged. |
| D．The gasoline engine charges the batteries as well as powers the car. |
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科目：高中英语 来源： 题型：阅读理解
Everyone has got two personalities-the one that is shown to the world and the other that is secret and real. You don’t show your secret personality when you’re awake because you can control your behavior, but when you’re asleep, your sleeping position shows the real you. In a normal night, of course, people frequently change their positions. The important position is the one that you go to sleep in.
If you go to sleep on your back, you’re a very open person. You normally trust people and you are easily influenced by fashion or new ideas. You don’t like to displease people. So you never express your real feelings. You’re quite shy and you aren’t quite sure of yourself.
If you sleep on your stomach, you are a rather secretive person. You worry a lot and you’re always easily upset. You always stick to your own opinions or judgment, but you don’t raise your hopes too much. You usually live for today not tomorrow. This means that you enjoy having a good time.
If you sleep curled up, you are probably a very nervous person. You have a low opinion of yourself and so you’re often defensive. You’re shy and you don’t normally like meeting people. You prefer to be on your own. You’re easily hurt.
If you sleep on your side, you have usually got a well—balanced personality. You know your strengths and weakness. You’re usually careful. You believe in yourself. You sometimes feel anxious, but you don’t often get sad. You always insist on what you think even if it makes people rather angry.
【小题1】According to the passage, a person, who is not willing to change his mind and hard to deal with, probably sleeps .
| A．on his side | B．on his back | C．curled up | D．on his stomach |
| A．do things personally. | B．stay alone |
| C．keep things secret | D．trust others easily |
| A．The people sleeping on their stomachs and those sleeping on his backs. |
| B．The people sleeping on their sides and those sleeping curled up. |
| C．The people sleeping on their backs and those sleeping on their sides. |
| D．The people sleeping curled up and those sleeping on their stomach. |
| A．one’s sleeping position has something to do with one’s character. |
| B．everyone has got both real and secret personalities. |
| C．the position in which one goes to sleep is the most important one. |
| D．when awake, one does not show one’s secret personality. |
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科目：高中英语 来源： 题型：阅读理解
For some people, music is no fun at all. About four percent of the population is what scientists call “amusic.” People who are amusic are born without the ability to recognize or reproduce musical notes (音调). Amusic people often cannot tell the difference between two songs. Amusics can only hear the difference between two notes if they are very far apart on the musical scale.
As a result, songs sound like noise to an amusic. Many amusics compare the sound of music to pieces of metal hitting each other. Life can be hard for amusics. Their inability to enjoy music set them apart from others. It can be difficult for other people to identify with their condition. In fact, most people cannot begin to grasp what it feels like to be amusic. Just going to a restaurant or a shopping mall can be uncomfortable or even painful. That is why many amusics intentionally stay away from places where there is music. However, this can result in withdrawal and social isolation. “I used to hate parties,” says Margaret, a seventy-year-old woman who only recently discovered that she was amusic. By studying people like Margaret, scientists are finally learning how to identify this unusual condition.
Scientists say that the brains of amusics are different from the brains of people who can appreciate music. The difference is complex, and it doesn’t involve defective hearing. Amusics can understand other nonmusical sounds well. They also have no problems understanding ordinary speech. Scientists compare amusics to people who just can’t see certain colors.
Many amusics are happy when their condition is finally diagnosed. For years, Margaret felt embarrassed about her problem with music. Now she knows that she is not alone. There is a name for her condition. That makes it easier for her to explain. “When people invite me to a concert, I just say, ‘No thanks, I’m amusic,’” says Margaret. “I just wish I had learned to say that when I was seventeen and not seventy.”
【小题1】Which of the following is true of amusics?
| A．Listening to music is far from enjoyable for them. |
| B．They love places where they are likely to hear music. |
| C．They can easily tell two different songs apart. |
| D．Their situation is well understood by musicians. |
| A．dislikes listening to speeches | B．can hear anything nonmusical |
| C．has a hearing problem | D．lacks a complex hearing system |
| A．her problem with music had been diagnosed earlier |
| B．she were seventeen years old rather than seventy |
| C．her problem could be easily explained |
| D．she were able to meet other amusics |
| A．Amusics’ strange behaviours. |
| B．Some people’s inability to enjoy music. |
| C．Musical talent and brain structure. |
| D．Identification and treatment of amusics. |
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科目：高中英语 来源： 题型：阅读理解
Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.
The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.
Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.
But this is not just about supermarkets. It is about all of us. We have learned to associate packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it also applies to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more of us recycle, we are beginning to realise just how much unnecessary material are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.
【小题1】What does the underlined phrase “over-consumption” refer to?
| A．Using too much packaging. | B．Recycling too many wastes. |
| C．Making more products than necessary. | D．Having more material than is needed. |
| A．the tendency of cutting household waste | B．the fact of packaging overuse |
| C．the rapid growth of super markets | D．the increase of packaging recycling |
| A．helps control the greenhouse effect | B．means burning packaging for energy |
| C．is the solution to gas shortage | D．leads to a waste of land |
| A．Unpackaged products are of bad quality. | B．Supermarkets care more about packaging. |
| C．It is improper to judge quality by packaging. | D．Other products are better packaged than food. |
| A．Fighting wastefulness is difficult. | B．Needless material is mostly recycled. |
| C．People like collecting recyclable waste. | D．The author is proud of their consumer culture. |
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科目：高中英语 来源： 题型：阅读理解
Siri. The intelligent assistant that helps you get things done. All you have to do is ask. 
Now you can use your voice to use your iPhone 4S. Just talk to Siri as you would to a person: “Do I need an umbrella?” or “Where’s the closest ATM?” Siri not only understands what you say, it knows what you mean. It figures out the right apps to use to find the right answer. Then, just like a personal assistant, it answers you. Siri makes phone calls, sends messages, schedules meetings, sets reminders, and more. How much more? Just ask, and Siri tells you that, too.
Dual-core A5 chip: the most powerful iPhone ever. 
Two cores in the A5 chip provide up to two times more power and up to seven times faster graphics. And you’ll feel the effects. iPhone 4S is quick and responsive, which makes all the difference when you’re launching apps, surfing the web, gaming, an doing just about everything. And no matter what you’re doing, you can keep on doing it. Because the A5 chip is so power-efficient, iPhone 4S has outstanding battery life.
FaceTime. It’s even better face-to-face.
FaceTime of iPhone 4S lets you hear a voice and see the face that goes with it—iPhone to iPhone, iPad 2, iPod touch, or Mac over Wi-Fi. So no matter where they are, no matter where you are, you’ll always be there. Making a FaceTime call is just as easy as making a phone call. And it’s even easier with Siri. Just tell Siri “FaceTime with Mom” and you show up, smile and wave hello. You’ll never miss a big event, an important meeting or a good laugh. And who wouldn’t be happy to see your face?
【小题1】The passage is mainly about __________.
| A．how to use iPhone 4S | B．some models of iPhone 4S |
| C．some special uses of iPhone 4S | D．how to understand some pictures |
| A．It can take photos. | B．It can make videos. |
| C．It can write messages. | D．It can answer questions. |
A． | B． | C． | D． |
| A．It can be used together with Siri. |
| B．It allows you to see the other person’s face. |
| C．It allows you to hear the other person’s voice. |
| D．It can only be used between iPhone and iPhone. |
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科目：高中英语 来源： 题型：阅读理解
Kids at the Interlake School Division were the first Canadian students to take part in a program to send experiments to the International Space Station.(ISS).
Jordan Schott and three other sixth grade students came up with the idea to test royal jelly(蜂王浆) in space . Their experiment came very close to be tested on the space station. “We were seeing if we could send it to space, and if it would lose its nutritional value” faster and or slower, ”said Schott. Schott is one of the 18 students in the Space Knights Club at Woodlands Elementary School, part of the Interlake School Division. Over 450 students from the Division took part in the program.
“I thought we were just students and we couldn’t do much in the way of that. It’s a way to communicate with people up there ,” said Braeden Clark, a seventh grade student who is also in the club.
The astronauts shared what they learned with their school with a full day of activities all about science and space.
Teacher Maria Nickel is the organizer of the club. She said the day was great for students to learn what they could do. “Space is one of those great things that get kids excited, but it also gives them the chance to do so much. They can be an astronaut; they can be an engineer, ”She said.
The day was held in honour of Chris Hadfield, a Canadian astronaut now in the Internal Space Station. “It gives kids someone more to look up to. Here’s a real hero to look up to who’s doing it all, doing it through education,” said Nickel.
Jordan Schott thinks it’s really cool. “To me it seems so cool how people can go up to space, and science is something I’ve always liked,” She said. Schott says she wants to follow in the footsteps of Hadfield and be an astronaut when she gets older.
One of the winning experiments in the competition was produced by students from Argyle, Manitoba. It will travel to the space station in the fall of 2013.
【小题1】The program at the Interlake School Division________-
| A．was carried out by 18 students. |
| B．was to test royal jelly in space |
| C．was designed to send experiments to the ISS |
| D．allowed the first students to connect with the ISS |
| A．thinks it’s cool to live in the ISS |
| B．encourages students to be astronauts |
| C．helps students develop their interest in space |
| D．thinks Chris Hadfield sets a good example to the students |
| A．She is seventh grader |
| B．She dreams of being an engineer |
| C．She respects Chris Hadfield very much |
| D．She didn’t like science when she was young |
| A．Kids carry out experiments for the ISS. |
| B．Winners of competitions travel to the ISS. |
| C．Astronauts do activities together with students |
| D．Interlake School Division trains students to be astronauts. |
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科目：高中英语 来源： 题型：阅读理解
Baekeland and Hartmann report that the " short sleepers" had been more or less average in their sleep needs until the men were in their teens. But at about age 15 0r so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to regard their nightly periods of unconsciousness as bothersome interruptions in their daily routines.
In general, these "short sleepers" appeared ambitious, active, energetic and cheerful. They stuck to their opinions, and were very sure about their job choices..They often held several jobs at once, or worked full-or part-time while going to school. And many of them had a strong urge to appear "normal" or " acceptable" to their friends and colleagues.
When asked to remember their dreams, the " short sleepers" did poorly. More than this, they seemed to prefer not remembering. Similarly, their usual way of dealing with psychological problems was not to admit that the problem existed, and then to keep busy in the hope that the trouble would go away.
The sleep patterns of the " short sleepers" were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic (躁狂者).
The "long sleepers" were quite different indeed. Baekeland and Hanmann report that these young men have been lengthy sleepers since childhood. They seemed to enjoy their sleep, protected it, and were quite concemed when sometimes they didn't have their desired 9 hours of nightly bed rest. They tended to remember their dreams much better than the " short sleepers". Many of the "long sleepers" were shy, anxious, quiet, nervous, passive, mildly depressed, and unsure of themselves ( particularly in social situations) . Several openly stated that sleep was an escape from their daily problems.
【小题1】From the passage, we can leam that .
| A．"short sleepers" need less sleep by nature |
| B．"long sleepers" sleep a longer period of time during the day |
| C．many "long sleepers" preserve their sleeping habit formed during their childhood |
| D．many " short sleepers" have to reduce their nightly sleep time because of busy work |
| A．sleep is a good way to escape from the reality |
| B．sleep is not so important as their daily activities |
| C．sleep affects their judgment on some important things |
| D．sleep is the best way to deal with psychological troubles |
| A．do not know how to relax properly |
| B．are more unlikely to run into mental problems |
| C．are full of energy even under the pressures of life |
| D．often pay little attention to the consequences of inadequate sleep |
| A．appear disturbed | B．become energetic |
| C．feel dissatisfied | D．be extremely unhappy |
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