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 |
Medical Center：
The staff of the Medical Center aim to provide convenient and comprehensive medical care to students and staff of the university. The center is well equipped and the staff here are trained to deal with a broad range of medical problems. Both female and male doctors as well as nursing staff are available for consultation. Also，all kinds of medicines are sold here and are cheaper for students than other drugstores.
Opening Hours：24 hours from Monday to Sunday
Phone：(412)396--6649 Fax：(412)396—6648
Diving Centre：
Our experienced instructors offer one-month courses in deep-sea diving for beginners. There are two evening lessons a week, in which you learn to breathe underwater and use the equipment safely. You only need swimming costume and towel. Reduced rates for couples.
Opening Hours：Monday and Friday：6：30 p．m．—8：30 p．m．
Phone：(412)396—6312 Fax：(412)396—6706
Riding School：
You can start horse—riding at any age. Choose private or group lessons any weekday
between 9 a．m．and 8：30 p．m．(3：30 p．m．on Saturdays). There are 10 kilometers of tracks and paths for leisurely rides across farmland and open country. You will need a riding hat.
Opening Hours：Monday through Friday：9：00 a．m．—8：30 p．m．
Phone：(412)396—6754 Fax：(412)396—6752
Sailing Club：
Our Young Sailor’s Course leads to the Stage 1 Sailing qualification. You’ll learn how to sail safely and the course also covers sailing theory and first aid. Have fun with other course members , afterwards in the clubroom. There are 10 weekly two-hour 1essons (Tuesdays 6 p．m．～8 p．m．).
Opening Hours：Tuesdays：6：00 p．m．—8：00 p．m．
Phone：(412)396—6644 Fax：(412)396—6644
Watersports Club：
We use a two-kilometer length of river for speedboat racing, and water-skiing, A beginners’ course consists of ten 20-minute lessons. You will learn to handle boats safely and confidently, but must be able to swim. The club is in a convenient central position and is open daily from 9 a．m to 4 p．m，with lessons all through the day.
Opening Hours：Monday through Friday：9：00 a．m．—4：00 p．m．
Phone: (412)396—6899 Fax396—6890If you want to swim and enjoy activities which are fast and a bit dangerous, you should join ________ .
| A．Diving Centre | B．Riding School |
| C．Sailing Club | D．Watersports Club |
If you want to experience a new activity in the countryside in the mornings，you may fax ________.
| A．(412)396—6648 | B．(412)396—6752 |
| C．(412)396—6876 | D．(412)396—6706 |
If you are planning to explore the ocean depths, you should attend your lessons at ______ .
| A．Monday through Friday：7：00 a．m．—10：00 p．m． |
| B．24 hours from Monday to Sunday |
| C．Monday and Friday：6：30 p．m．—8：30 p．m． |
| D．Tuesdays：6：00 p．m．—8：00 p．m． |
Which is NOT the convenience that the Medical Center provides?
| A．Nursery for newly-born babies. |
| B．Well trained staff members. |
| C．Good equipment. |
| D．Various less expensive medicines. |
I was going to die in Antarctica, I was certain. A picture of my frost-covered body, pale and lifeless, filled my mind as I glanced around. In all directions spreads the empty wilderness of Antarctica, the only feature being the division between snow and sky. I sadly stared at my team, who were rapidly disappearing from my sight．
It happened in the year 2009 when I was head of an adventure attempting to reach the South Pole. The team was made up of ordinary women from all around the world—from Jamaica, India, Singapore and Cyprus—many of whom had never seen snow, or spent a night in a tent, before we set off. Our aim was to be the most international all-female team to reach the South Pole．
By the time I realized that my sledge was firmly stuck, the team were already a long way ahead of me. I called out to Era, my teammate from Brunei, who was next in line. Getting no response, I called again, but my shouts were carried away in the opposite direction by the wind. I had stood and watched the line for a while as it marched away from me, confident that at any moment one of my teammates would look behind her. Seconds passed. Nothing. I was gradually being left alone．
I pushed my sledge again, my strength suddenly increased when I thought of a cold, lonely death. This time the sledge moved a little. I kicked at the ice with my ski-pole and boot, desperately trying to break the sledge free and pushed again. The sledge shot forward, knocking me off balance. I struggled to my feet and set off after the team．
I caught up just as they realized I wasn't there. As we continued, my panic slowly faded. I found myself laughing to myself as I noticed Reena checking behind her every few paces. In fact for the whole of the rest of the day each member of the team glanced over her shoulder every few minutes. They were not going to risk losing me again.What can we know from the first paragraph?
| A．The author's poor physical condition． |
| B．The wonderful sights of Antarctica． |
| C．The rough natural conditions of Antarctica． |
| D．The author's regret of being left alone． |
What's the main idea of the second paragraph?
| A．Brief introduction about the adventure. |
| B．How the author became the team leader. |
| C．The process of selecting the team members. |
| D．Complete information about the team members. |
What made it possible for the author to get her sledge out of the ice?
| A．The shouts of her teammates. |
| B．The strong desire to live on. |
| C．A sudden change in wind direction. |
| D．The natural beauty ahead in Antarctica. |
Why did the team form the habit of looking behind?
| A．Because they were expecting their team leader's arrival. |
| B．Because their team leader demanded them to do so. |
| C．Because they were afraid there might be danger coming from behind. |
| D．Because they wanted to make sure their team leader was following. |
In the US, people prefer waiting for a table to sitting with people they don’t know. This means a hostess may not seat a small group until a small table is available, even if a large one is. If you are sitting at a table with people you don’t know, it is impolite to light up a cigarette without asking if it will disturb them.
At American restaurants and coffee shops you are usually served tap water before you order. You may find the bread and butter is free, and if you order coffee, you may get a free refill.
Most cities and towns have no rules about opening and closing time for stores or restaurants, though they usually do make rules for bars. Especially in large cities, stores may be open 24 hours a day.
Serving in restaurants is often large, too large for many people. If you can’t finish your meal but would like to enjoy the food later, ask your waitress or waiter for a “doggie bag”. It may have a picture of a dog on it, but everybody knows you’re taking the food for yourself.
Supper and dinner are both words for the evening meal. Some people have “Sunday dinner”. This is an especially big noon meal.
Tips are not usually added to the check. They are not included in the price of the meal, either. A tip of about 15% is expected and you should leave it on the table when you leave. In some restaurants, a check is brought on a plate and you put your money there. Then the waiter or waitress brings you your change.Which statement is true?
| A．American people like sitting with people they don’t know. |
| B．A hostess always seats a small group at a large table. |
| C．American people never sit with people they don’t know. |
| D．American people will not light a cigarette if the people who sit at the same table mind their smoking. |
What is served before you order?
| A．Bread. | B．Butter. | C．Coffee. | D．Cold water. |
What do American people always do when servings are too large for them?
| A．They take the food home with a “doggie bag” for their dogs. |
| B．They leave the food on the table and go away. |
| C．They take the food home with a “doggie bag” and enjoy the food later. |
| D．They ask the waitress or waiter to keep the food for them. |
What can you learn about “tips” according to the passage?
| A．Customers often add tips to their check. |
| B．The price of the meal usually includes the tip. |
| C．People are not expected to pay tips in addition. |
| D．Tips are supposed to be left on the table when customers leave |
Do you like chocolate? Maybe most people do. A box of it can be a great gift. Buy one for a friend and give it as a surprise. See how happy that person gets.
Say you just got a box of chocolate. Which piece do you pick first? A man has studied people’s choices. He says they tell something about the person. Did you choose a round piece? You are a person who likes to party. Did you choose an oval (椭圆形的) shape? You are a person who likes to make things. Picking a square shape shows something else. The person is honest and truthful. You can depend on him or her.
What kind of chocolate do you pick? Maybe you like milk chocolate. This shows you have warm feelings about the past. Dark chocolate means something else. A person who chooses it looks toward the future. What about white chocolate? Would you choose it? If so, you may find it hard to make up your mind. Some people like chocolate with nuts. These are people who like to help others.
Do you believe these ideas? Can candy tell all these things? It doesn’t really matter. There is one sure thing about eaters of chocolate. They eat it because they like it.This passage mainly tells us ______.
| A．why people like chocolate |
| B．almost everyone likes chocolate |
| C．about different kinds of chocolate |
| D．different choices may show different characters |
Picking a round shape of chocolate shows that a person ______.
| A．can be depended on |
| B．likes singing, dancing and drinking |
| C．is good at making things |
| D．likes to do something for others |
From this passage we can say that a helpful man may choose chocolate ______.
| A．with nuts | B．with coffee |
| C．in square shape | D．in oval shape |
The last paragraph suggests that the writer ______.
| A．believes all the information about chocolate |
| B．does not believe the information about candy |
| C．is trying to get you to believe these information |
| D．doesn’t think it important whether you believe the ideas |
In 2006, a large number of new Internet sites became popular around the world. Some of these are for communication, others for entertainment(娱乐).
The blog is one form of communication that increased in popularity. Through these personal websites(网址), people can share their lives, ideas and opinions on the Internet. People of all ages have their own blogs. For young people, they are a way to show their writing and other forms of self-expression. Blogs also connect people with other people who have the same interests. For example, teachers use blogs to share ideas with other teachers’, as well as experiences and concerns about their work.
YouTube is another Internet site that became more popular last year. This website lets anyone create, share and watch short videos. These include videos of people singing or dancing, or animals doing funny things. Three young men created YouTube almost two years ago as a personal video sharing service. They recently sold it to Google for more than one and a half billion dollars.
Games and entertainment also became a larger part of the Internet last year. One Internet social site is called Second Life. It is an online world in which computer users create a new self and live a different life. They get married, build homes, operate businesses, buy and sell goods, work, play and attend school.
People also take part in fantasy sports leagues with the help of the Internet. A fantasy sport is a game in which each member of a group acts as the owner of a team. Each owner creates a team of real-life professional players to compete against other teams in the league. More than fifteen million American adults play fantasy sports. The industry earns more than one billion（十亿）dollars each year from publications, memberships and other costs.The passage is mainly about __________.
| A．the most popular Internet technology in 2006 |
| B．some new ways for people to communicate or have fun on the Internet |
| C．one online game called Second Life |
| D．the high price of playing online |
Who is the owner of YouTube now?
| A．Three young men. | B．Google. |
| C．Computer users. | D．Yahoo. |
Whom does the underlined word “they” in Paragraph 4 refer to?
| A．The people who are interested in blogs. |
| B．The people who play games on YouTube. |
| C．The people who play Second Life. |
| D．The people who are created in Second Life. |
What do we know from the passage?
| A．Teachers can share ideas, experiences and concerns about their work with other teachers on any website. |
| B．More than fifteen million American teenagers play fantasy sports. |
| C．Second Life helps people get married, buy and sell goods, work, play and attend school in real life. |
| D．Fantasy sports, a game in which each member of a group acts as the owner of a team, is very popular around the world. |
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