阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。
By creating a distinctive username and reusing it on multiple websites，you may be giving online marketers and scammers a simple way to track you. Four researchers from The French National Institute for Research in Computer Science and Control (INRIA) studied over 10 million usernames－collected from public Google profiles，eBay accounts，and several other sources. They found that about half of the usernames used on one site could be linked to another online profile，potentially allowing marketers and scammers to build a more complex picture of the users.
“These results show that some users can be profiled just from their usernames，” says Claude Castelluccia，research director of the security and privacy research group at INRIA，and one of the authors of a paper on the work.“More specifically，a profiler could use usernames to identify all the profiles that belong to the same user，and then use all the information contained in these sites to profile the victim.”
Those who have more unique usernames are more likely to be attacked. The INRIA researchers have created a tool that can check how unique a username is，and thus how easily an attacker could use it to build a profile of a person.
Researchers are exploring ways that the traces of data that people leave on different websites could be combined and used to track them. A 2010 paper showed that the online groups to which people belonged could be used to infer their real identity in 42 percent of cases.
Building profiles of consumers using online information has already become a major industry for marketers as well as online criminals.What would be the best title for the passage?
| A．Look out for online criminals |
| B．Your username may betray you |
| C．Don't leave your traces online |
| D．A unique username is more attractive |
Online marketers may use your username to ________.
| A．get a picture of yours |
| B．steal from your online account |
| C．get useful information about you |
| D．find out your interest or hobbies |
The main purpose of the passage is probably to ________.
| A．warn us of the possible dangers of a unique username |
| B．tell us how to manage our online information |
| C．advise us on how to choose a proper username |
| D．tell us the importance of a username |
We can infer from the passage that ________.
| A．it's hard to build a profile of a person from an online username |
| B．it's better to use a more complex username online |
| C．an online username has little to do with the real person |
| D．we'd better not use the same username on different sites |
The underlined word “scammers” in Paragraph 1 most probably means ________.
| A．friends |
| B．criminals |
| C．victims |
| D．salesmen |
David Beckham had a dream: to be the first English player to appear in four World Cups．But now it appears that dream is over after a serious injury to his Achilles tendon （跟腱） which means he could be out of action for around six months．With this year's World Cup in South Africa only three months away, sadly Beckham looks set to miss out．The injury happened while Beckham was playing for AC Milan against AC Chievo in the Italian league．After attempting to kick the ball he fell to the ground and hobbled off the pitch before being stretchered （被担架抬走）away．
It is not yet known whether he has completely severed （切断）his Achilles tendon or only torn it．The player has now flown to Finland for assessment and treatment by a knee specialist．
England manager Fabio Capello fears the worst for Beckham's World Cup chances．
"We have to wait for the results of the scan but it looks like he is out of the World Cup," he said in a statement．"I spoke with him after the game on Sunday night to offer my support．
"David is a great professional and has worked very hard to be ready for the World Cup, so missing it will be a big blow．"
Beckham's former manager at American club LA Galaxy, Alexei Lalas, echoed （共鸣）Capello's words of support:
"It is a horrible situation for Beckham．I know how much it meant to him to be in the World Cup and how important he was to the England team．
David Beckham is now 34 and some are asking whether this serious injury could mean his whole career is over．
Whatever happens, as one of football's best-known and popular players, Beckham will have no shortage of encouragement from fans around the world．
Some will remember Beckham's miraculous recovery from an Achilles injury in 2006, when he was back on the pitch after only eight weeks．
If he could repeat the same feat in time for the World Cup it really would be the stuff of fairytales．
So, perhaps all is not lost．Optimists will take heart from Alexei Lalas' words:
"You never want to write off David Beckham as he has shown us his ability to bounce back（恢复原状）．" ．What is the best title of the passage?
| A．Beckham had a dream? |
| B．Beckham--- a great football player! |
| C．The end for Beckham? |
| D．World Cup in South Africa! |
．What does the author mean by saying “missing it will be a big blow” in paragraph 4 ?
| A．Missing the world cup will be a big success． |
| B．Missing Beckham means a great failure ． |
| C．Missing Beckham means an important opportunity for the American club LA Galaxy． |
| D．Missing the world cup means a big disappointment for Beckham ． |
．We may infer from the passage that ________ ．
| A．Beckham will definitely not be able to play football again |
| B．Beckham was cured by a great knee specialist he found |
| C．Beckham has his ability to bounce back |
| D．Beckham is likely to miss the world Cup |
．What does the underlined words “take heart” probably mean ?
| A．get disappointed | B．get help | C．get encouraged | D．get hurt |
If you look up the word “create” in the dictionary , you will find it means “to bring into being, to cause to exist something each of us does daily”．
We are creative whenever we look at or think about something in a new way First, this includes an awareness of our surroundings．It means using all of our senses to become aware of our world．This may be as simple as being aware of color and texture（质地）,as well as taste, when we plan a meal．Above all, it is the ability to notice things that others might miss．
A second part of creativity is an ability to see relationships among things．If we believe the expression, “There is nothing new under the sun, the creativity is remaking or recombining（重组） the old in new ways．”For example, we might do this by finding a more effective way to study or a better way to arrange our furniture, or we might make a new combination of camera lenses and filters to create an unusual photograph．
A third part of creativity is the courage and drive to make use of our new ideas, to ask for them to achieve some new results．To think up a new idea is one thing; to put the idea to work is another．
These three parts of creativity are included in all the great works of geniuses, but they are also included in many of our day-to-day activities．．Which of the following activities is NOT a creative one according to the passage?
| A．To prepare for a meal． |
| B．To arrange the furniture in a special way． |
| C．To buy some books from a bookstore． |
| D．To“write”a letter with the computer． |
．“There is nothing new under the sun” really implies that _________．
| A．a new thing can only be created at the basis of earlier things |
| B．a new thing is only a tale |
| C．we can seldom create new things |
| D．we can hardly see really new things in the world |
．What does the author think about the relationship between a new thought and its being put into practice?
| A．It’s more difficult to create a new thought than to use it in practice． |
| B．To find a new thought will clearly lead to the production of a new thing． |
| C．A man with an excellent ability of practice can easily become an inventor． |
| D．One may come up with a new thought, but can not put it into practice． |
．The best title for this passage is__________．
| A．How to Develop One’s Creativity |
| B．What Is Creativity |
| C．The Importance of Creativity |
| D．Creativity, a Not Faraway Thing |
Some researchers claim that people’s personalities can be classified by their blood types．If you have blood type O, you are a leader．When you see something you want, you strive to achieve your goal．You are passionate, loyal, and self-confident, and you are often a trendsetter．Your enthusiasm for projects and goals spreads to others who happily follow your lead．When you want something, you may be ruthless about getting it or blind to how your actions affect others．Another blood type, A, is a social “people” person．You like people and work well with them．You are sensitive, patient, compassionate, and affectionate．You are a good peacekeeper because you want everybody to be happy．In a team situation, you resolve conflicts and keep things on a smooth course．Sometimes type As are stubborn and find it different to relax．They may also find it uncomfortable to do things alone．
People with type B blood are usually individualists who like to do things on their own．You may be creative and adaptable, and you usually say exactly what you mean．Also you can adapt to situations, you may not choose to do so because of your strong independent streak．You may prefer working on your own to being part of a team．The final blood type is type AB．If you have AB blood, you are a natural entertainer．You draw people to you because of your charm and easygoing nature．ABs are usually calm and controlled, tactful and fair．On the downside, though, they may take too long to make decisions．And they may procrastinate, putting off tasks until the last minute．．People with type O will do the following things except____．
| A．manage businesses | B．self-oriented | C．be considerate | D．set the fashion |
．Which of the following is not the feature of type A?
| A．Stubborn． | B．Sensitive． | C．Reserved． | D．Patient． |
．What is Not true to type B?
| A．He finds it uncomfortable to do things alone． |
| B．He doesn’t think much before he speaks． |
| C．He has many original ideas． |
| D．He cannot fit in with the environment． |
．The best profession for a type AB is ____．
| A．Athlete | B．Peacekeeper | C．Actor | D．Country leader |
David Beckham had a dream: to be the first English player to appear in four World Cups．But now it appears that dream is over after a serious injury to his Achilles tendon （跟腱） which means he could be out of action for around six months．With this year's World Cup in South Africa only three months away, sadly Beckham looks set to miss out．The injury happened while Beckham was playing for AC Milan against AC Chievo in the Italian league．After attempting to kick the ball he fell to the ground and hobbled off the pitch before being stretchered （被担架抬走）away．
It is not yet known whether he has completely severed （切断）his Achilles tendon or only torn it．The player has now flown to Finland for assessment and treatment by a knee specialist．
England manager Fabio Capello fears the worst for Beckham's World Cup chances．
"We have to wait for the results of the scan but it looks like he is out of the World Cup," he said in a statement．"I spoke with him after the game on Sunday night to offer my support．
"David is a great professional and has worked very hard to be ready for the World Cup, so missing it will be a big blow．"
Beckham's former manager at American club LA Galaxy, Alexei Lalas, echoed （共鸣）Capello's words of support:
"It is a horrible situation for Beckham．I know how much it meant to him to be in the World Cup and how important he was to the England team．
David Beckham is now 34 and some are asking whether this serious injury could mean his whole career is over．
Whatever happens, as one of football's best-known and popular players, Beckham will have no shortage of encouragement from fans around the world．
Some will remember Beckham's miraculous recovery from an Achilles injury in 2006, when he was back on the pitch after only eight weeks．
If he could repeat the same feat in time for the World Cup it really would be the stuff of fairytales．
So, perhaps all is not lost．Optimists will take heart from Alexei Lalas' words:
"You never want to write off David Beckham as he has shown us his ability to bounce back（恢复原状）．" ．What is the best title of the passage?
| A．Beckham had a dream? |
| B．Beckham--- a great football player! |
| C．The end for Beckham? |
| D．World Cup in South Africa! |
．What does the author mean by saying “missing it will be a big blow” in paragraph 4 ?
| A．Missing the world cup will be a big success． |
| B．Missing Beckham means a great failure ． |
| C．Missing Beckham means an important opportunity for the American club LA Galaxy． |
| D．Missing the world cup means a big disappointment for Beckham ． |
．We may infer from the passage that ________ ．
| A．Beckham will definitely not be able to play football again |
| B．Beckham was cured by a great knee specialist he found |
| C．Beckham has his ability to bounce back |
| D．Beckham is likely to miss the world Cup |
．What does the underlined words “take heart” probably mean ?
| A．get disappointed | B．get help | C．get encouraged | D．get hurt |
An early invention by Albert Einstein has been rebuilt by scientists at Oxford University. They are trying to develop an environmentally friendly refrigerator that runs without electricity.
We all know that modern fridges cause damage to the environment. They work by using a kind of man-made greenhouse gas called Freon (氟里昂), which is far more damaging than carbon dioxide.
Now Malcolm McCulloch, an electrical engineer at Oxford, is leading a three-year project to develop appliances that can be used in places without electricity.
His team has completed a prototype (样机) of a fridge patented in 1930 by Einstein. It used only pressurized gases to keep things cold. The design was partly used in the first refrigerators, but the technology was dropped when more efficient compressors (压缩机) became popular in the 1950s. That meant a switch to using Freon.
Einstein's idea uses butane (丁烷) and water and takes advantage of the fact that liquids boil at lower temperatures, when the air pressure around them is lower.
"If you go to the top of Mount Qomolangma, water boils at a much lower temperature than it does when you're at sea level and that's because the pressure is much lower up there," said McCulloch.At one side is the evaporator (蒸发器), a bottle that contains liquid butane. "If you introduce a new vapor above the butane, the liquid boiling temperature decreases and, as it boils off, it takes energy from the surroundings to do so," says McCulloch. "That's what makes it cold."
The gas fridges based on Einstein's design were replaced by Freon-compressor fridges partly because Einstein's design was not very efficient. But McCulloch thinks that by changing the design and replacing the types of gases used it will be possible to quadruple (翻两番) the efficiency.
However, McCulloch's fridge is still in its early stages. "It's very much a prototype," he said. "Give us another month and we'll have it working."． According to the passage, an early invention by Albert Einstein _______.
| A．has been rediscovered because it costs much less and works more efficiently |
| B．is being redesigned because it could be used in places without electricity |
| C．has just been found to be energy-saving and environmentally friendly |
| D．will be fully made use of and become the fridge of the future |
．Which of the following is TRUE according to the text?
| A．Freon was used in fridges long before the 1950s. |
| B．Freon is what makes current fridges big polluters. |
| C．McCulloch thinks he could improve Einstein's design by using other types of vapors. |
| D．The fridge Malcolm McCulloch and his team designed will be put into production soon. |
．We can learn from the text that the prototype completed _______.
| A．changed the air pressure around it |
| B．was tested on the top of Mount Everest |
| C．increased the liquid boiling temperature |
| D．used only pressurized gases to keep things cold |
．McCulloch's words in Paragraph 6 _____.
| A．serve as an explanation for the principle behind Einstein's fridge |
| B．give you the reason why Einstein's fridge was not efficient |
| C．tell you how to take advantage of low air pressure |
| D．show you how Einstein's fridge works |