Imagine what you could do with a machine that could make things disappear.
For inspiration, you could read some books. In the books of J.R.R. Tolkein, Bilbo Baggins finds a ring that can make him disappear. Of course, there’s also poor Harry Potter, who used his invisibility cloak (隐形斗篷) to hide from danger.
Now that you’ve got some ideas, it’s time for the hard part: building the cloak. To do that, you have to give up science fiction and turn to real science. An invisibility cloak has to cheat anything or anyone who might be watching. In order to understand how something can be seen, it’s important to understand how we see.
Human beings can only see objects that reflect (反射) light waves. These waves enter the eye and are then processed by the brain. However, if an object doesn’t reflect light, then the waves don’t enter the eye, and the brain doesn’t process. So building an invisibility cloak is building something that doesn’t reflect light.
Cummer was part of a team of scientists from Duke University, including David Smith and David Schurig, who built the world’s first version (版本) of an invisibility cloak. They had been inspired by the work of a British physicist, John Pendry. He in May said that an invisibility cloak was possible and Pendry was not the only one thinking about a disappearing act. At the same time, a Scottish physicist, UIf Leonhardt published a paper on building invisibility equipment.
“It wasn’t easy,” says Cummer. “As often happens in science and research, it didn’t work very well the first time. That first cloak didn’t work like Harry Potter’s --- the scientists didn’t actually see anything disappear. So the research is still under way. ”The first two paragraphs serve as a (n) ________.
| A．introduction | B．explanation |
| C．comment | D．summary |
Cummer and other scientists got the idea of building an invisibility cloak from _________.
| A．the film Harry Potter |
| B．the work of a British physicist |
| C．a paper published by a Scottish physicist |
| D．the book of J.R.R. Tolkein |
From the text we learn that the research on an invisibility cloak __________.
| A．was led by Pendry |
| B．was very successful |
| C．was used in most popular movies |
| D．is still in progress |
What can be the best title for the text?
| A．The Science of Disappearing |
| B．The Hardest Part of Building a Cloak |
| C．The Invention of an Invisibility Cloak |
| D．Turn Science Fiction into Real Science |
"Experience may possibly be the best teacher, but it is not a particularly good teacher." You might think that Winston Churhill or perhaps Mark Twain spoke those words, but they actually come from James March, a professor at Stanford University and a pioneer in the field of organization decision making. For years March( possibly be wisest philosopher of management) has studied how humans think and act, and he continues to do so in his new book The Ambiguities of Experience.
He begins by reminding us of just how firmly we have been sticking to the idea of experiential learning :"Experience is respected；experience is sought；experience is explained."The problem is that learning from experience involves（涉及）serious complications（复杂化），ones that are part of the nature of experience itself and which March discusses in the body of this book.
In one interesting part of book，for example，he turns a double eye toward the use of stories as the most effective way of experiential learning. He says"The more accurately（精确的）reality is presented，the less understandable the story，and the more understandable the story, the less realistic it is."
Besides being a broadly knowledgeable researcher. March is also a poet, and his gift shines though in the depth of views he offers and the simple language he uses. Though the book is short, it is demanding；Don't pick it up looking for quick, easy lessons. Rather, be ready to think deeply about learning from experience in work and life.
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According to the text, James March is.
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| 2． |
According to James March, experience.
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| 3． |
What can we learn from Paragraph 3?
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| 4． |
What's the purpose of this text?
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The pound new Library of Birmingham（LoB）will be the most visible sign of the way the city is accepting the digitalization（数字化）of everyday life.
Set to open in 2013, the £188m LoB is already beginning to tale shape next to the Birmingham Repertory Theatre, with which it will share some equipment.
As digital media（媒介）is important to its idea. the project is already providing chances for some of the many small new local companies working at the new technologies.
Brian Gambles, the LoB project director, says it is about giving people the right tools for learning,“The aim is to mix the physical with the digital. Providing 24-hour services which can be used through many different ways. It is important to enable us to reach more people, more effectively.”
The digital library will, he says, be as important as the physical one, allowing the distant use of the services, making sure that it is never closed to the public.
Even before the LoB is complete, the public has been able to go online to visit the Virtual（虚拟的）LoB, designed by Baden, the Birmingham virtual worlds specialists. Not only have the public been able to learn about LoB, but the virtual one has also enabled those working on the LoB to understand the building and how it will work before it even opens.
Two other small Birmingham-based digital companies are working on the LoB projects. Substrat, a digital design company, is developing what it calls “enlarge reality” project. It is about the use of an exciting smart phone, an important part of the LoB which is in the early stages of development is an online library of figures of the city being built by a digital content company in Cahoots, in which users will be encouraged to add to and comment on the material.
Gambles says: “Technology will enable us to make the library’s content and services open to citizens as sever before.”
The underline part “its idea” in Paragraph 3 refers to the idea of____
| A．the equipment | B． the project |
| C．the digital media | D． the physical library |
While visiting the Virtual LoB, the public can_____
| A．get a general idea of the LoB |
| B．meet many world-famous experts |
| C．learn how to put up a library building |
| D．understand how the specialists work on the project |
Which of the following is true of the LoB when it opens?
| a. It offers better learning tools b. It reaches users in different ways c. It provides users with smart phone d. It allows users to enrich its material e. It gives non-stop physical and digital services |
A. a, b, d B. a, c, e C. b, c, d D. b, d, e
This text is most probably taken from .
| A．a put book | B．a library guide |
| C．a handbook | D．a newspaper report |
Exploit your parking space
An unused parking space or garage can make money. If you live near a city center or an airport, you could make anything up to £200 or £300 a week. Put an advertisement（广告）for free on Letpark or Atmyhousepark.
Rent（出租）a room
Spare room? Not only will a lodger（房客）earn you an income, but also, thanks to the government-backed "rent a room" program, you won't have to pay any tax on the first £4500 you make per year. Try advertising your room on Roomspare or Roommateeasy.
Make money during special events
Won't want a full-time lodger? Then rent on a short-term basis. If you live in the capital, renting a room out during the Olympics or other big events could bring in money, Grashpadder can advertise your space.
Live on set
Renting your home out as a "film set" could earn you hundreds of pounds a day, depending on the film production company and how long your home is needed. A quick search on the Internet will bring up dozens of online companies that allow you to register your home for free-but you will be charged if your home gets picked.
Use your roof
You need the right kind of roof, but some energy companies pay the cost of fixing solar equipment(around￡14,000), and let you use the energy produced for nothing. In return, they get paid for unused energy fed back into the National Grid. However, you have to sign a 25-year agreement with the supplier, which could prevent you from changing the roof.
| 1． |
If you earn ￡5000 from renting a room in one year, the tax you need to pay will be based on.
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| 2． |
Where can you put an advertisement to rent out a room during a big event?
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If you want to use energy free, you have to.
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For whom the text most probably written?
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It’s 5:00 in the morning when the alarm (闹钟) rings in my ears. I roll out of bed and walk blindly through the dark into the bathroom. I turn on the light and put on my glasses. The house is still as I walk downstairs while my husband and three kids sleep peacefully. Usually I go for a long run, but today I choose my favorite exercise DVD insanity. Sweat pours down my face and into my eyes. My heart races as I face my body to finish each movement. As I near the end of the exercise ,I feel extremely tired, but a smile is of my face. It’s not a smile because the DVD is over , but a smile of success from pushing my body to its extreme limit.
Some people enjoy shopping, smoking , food, work, or even chocolate. But I need exercise to get through each day. Some shake heads when they see me run through the town. Others get hurt when I refuse to try just one bite of their grandmother’s chocolate cake. They raise their eyebrows, surprised by my “no thank you,” or by my choice to have a salad. Over the years , I have learned it’s okay to just say “no.” I shouldn’t feel sorry for refusing food that I don’t want to eat.
So what drives me to roll out of bed at 5:00 a.m.? What gives me the reason to just say to ice cream? Commitment. A commitment to change my life with a way that reduces daily anxiety, increases self –confidence and energy, extends life and above all improve my body shape. This is the point where a smile appears on my face as I look at myself in the mirror or try on my favorite pair of jeans that now fit just right. It’s through commitment and sweat that I can make a difference within myself inside and out.
Why is there a smile on the author’s face in the morning?
| A．Because she sees her family sleeping peacefully. |
| B．Because she finishes her favorite exercise |
| C．Because she enjoys the interesting DVD |
| D．Because she feels a sense of achievement |
Which of the following is true according to Paragraph 2?
| A．She doesn’t treat others politely |
| B．She likes to make others surprised |
| C．Others don’t understand what she does |
| D．Others try to help her by offering her food |
What does the underlined word “commitment” in the last paragraph mean?
| A．Good health | B．Firm belief | C．A strong power | D．A regular half |
What can we learn about the author from the text?
| A．She acts in a strange way |
| B．She wants to look different from others |
| C．She aims to develop a good body shape |
| D．She has difficult getting along with others |
The Coalition for the Homeless is an organization that seeks to address the needs of the homeless population in the United States. It is a network of offices, some of which provide food and houses for the homeless population, and some of which fight for the passing of laws that of over two hundred million people living in the United States,up to three million are homeless—and the number is still growing. Since the late 1970s,fast rising house prices,large cuts in government supported housing programs, and economic recession(经济衰退)have made it impossbile for many Americans to meet housing costs. Sadly, this has resulted in a number of persons being forced to leave their homes and/or unable to find new affordable homes. According to another research,families with children appear to be the fastest-growing part of the homeless population, making up 39% of it.The old idea of a homeless person,that of the single man who gets drunk all the time,is no longer true. A much lager part of the population now finds itself homeless. Even worse, once a person becomes homeless, he often finds it impossible to find a job,since most employers require anyone who wants a job from them to provide a home address on a job applicaton.
The word “address” in the first line probably means .
| A．talk about | B．deal with | C．fight for | D．write to |
How many people are homeless in the U.S. according to the Coalition studies?
| A．39% of the population. | B．200 million people. |
| C．About 3 million people. | D．About one-fifth of the population. |
Homeless people often have difficulty finding a job because________.
| A．they have no home addresses |
| B．they mostly have a drinking problem |
| C．they aren't supported by government programs |
| D．they often don't have enough work experience |
What is the main cause of the rising number of the homeless in the U.S.?
| A．The passing of new housing laws. |
| B．The fast growth of family size. |
| C．The slow construction of houses. |
| D．The ever-rising price of housing. |