We're all connected. You can send an e-mail message to a friend, and your friend can pass it on to one of his or her friends, and that friend can do the same, continuing the chain. Eventually, your message could reach just about anyone in the world, and it might take only five to seven e-mails for the message to get there.
Scientists recently tested that idea in a study involving 24,000 people. Participants had to try to get a message forwarded to one of 18 randomly chosen people. Each participant started by sending one e-mail to someone they knew. Recipients could then forward the e-mail once to someone they knew, and so on.
Targets, who were randomly assigned by researchers from Columbia University in New York, lived in 13 countries. They included an Australian police officer, a Norwegian veterinarian, and a college professor.
Out of 24,000 chains, only 384 reached their goal. The rest petered out, usually because one of the recipients was either too busy to forward the message or thought it was junk mail.
The links that reached their goal made it in an average of 4.05 e-mails. Based on the lengths of the failed chains, the researchers estimated that two strangers could generally make contact in five to seven e-mails.
The most successful chains relied on casual acquaintances rather than close friends. That's because your close friends know each other whereas your acquaintances tend to know people you don't know. The phenomenon, known as the strength of weak ties, explains why people tend to get jobs through people they know casually but aren't that close to.
So, start networking and instant messaging now. As they say in show business: It's all about who you know. If you want to get into touch with a stranger in the world, how many e-mails might it take for the message to reach him/her?
| A. 5 to 7 |
B. 18 |
C. 13 |
D. 384 |
Which of the following is Not true about the test?
| A. 24,000 people took part in the study and sent e-mails to people they knew. |
| B. The 18 targets were chosen by chance. |
| C. About 98.4% of the mails didn’t reach their goal because some people were too busy or they mistook the message for junk mail. |
| D. The targets come from 13 countries, such as Australia, Norway and New York. |
What does the word “estimate” mean in the passage?
| A. make sure |
B. suppose |
C. think over |
D. imagine |
Why do people tend to get jobs more easily through casual acquaintances than close friends?
| A. Because close friends don’t talk with each other so much. |
| B. Because casual acquaintances can help you know more people and make more friends. |
| C. Because close friends don’t spend so much time gathering together. |
| D. Because casual acquaintances are kinder and more willing to help others. |
In which part of a newspaper will readers read this passage?
| A. Culture |
B. Entertainment |
C. Information and Technology |
D. Health |
As I sat beside the window of our classroom that afternoon, my heart sank further with each passing car. This was a day I’d looked forward to for weeks: Miss Pace’s fourth-grade, end-of-the-year party. I had happily volunteered my mother when Miss Pace looked for cookie volunteers. Mom’s chocolate chips were well-known, and I knew they’d be a hit with my classmates. But two o’clock passed, and there was no sign of her. Most of the other mothers had already come and gone, dropping off their sweet offerings. The three o’clock bell soon took me away from my thoughts and I took my book bag from my desk. I decided I would slam the front door, and refuse to return her hug.
But when I arrived, she wasn’t at home. I was lying face-down on my bed upstairs when I heard her come through the front door. “Robbie,” she called out a bit urgently. “Where are you?” I could then hear her rushing anxiously from room to room, wondering where I could be. I remained silent. Coming through the door, she said: “I’m so sorry, honey,” she said. “I just forgot. I got busy and forgot.” Then my mother did something completely unexpected. She began to laugh! How could she laugh at a time like this? I rolled over and faced her, ready to let her see my rage (愤怒). But my mother wasn’t laughing at all. She was crying. “I’m so sorry,” she said. “I let you down. I let my little boy down.”
I was moved by her tears. I tried to remember her kind words from times past when I’d skinned knees or cut myself, times when she knew just the right thing to say. “It’s okay, Mom. We didn’t even need those cookies. There was plenty of stuff to eat. Don’t cry. It’s all right. Really.” We didn’t say another word. We just held each other. When we came to the point where I would usually pull away, I decided that, this time, I could hold on, perhaps, just a little bit longer. The author was pretty down because ________.
| A．he couldn’t go to the party he had been looking forward to |
| B．his mother didn’t turn up at the party as she had promised |
| C．his mother had refused to make chocolate chips for the party |
| D．the cookies his mom made was not popular at the party |
When the author returned home, ________.
| A．he was so angry that he slammed the front door. |
| B．he was silent and refused to return his mother’s hug. |
| C．he rushed from room to room looking for his mother. |
| D．he was so disappointed that he couldn’t express his anger to his mother. |
We can tell from the story that _______.
| A．the mother didn’t get to the party because of the traffic jam |
| B．the mother was sorry for her absence and laughed at herself |
| C．the author was a caring and thoughtful boy |
| D．the author was overcome with anger |
The article conveys the message that _______.
| A．it is silly to be angry with your family |
| B．everybody should keep his or her promises |
| C．true love is based on understanding |
| D．understanding how to comfort people in low spirits is a true skill |
Choose Winners Club, and you choose to be a winner! The Winners Club is a bank account specially designed for teenagers. It has been made to help you better manage your money. The Winners Club is a transaction account（交易账户）where you receive a key-card so you can get to your money 24/7 – that’s 24 hours a day, 7 days a week! It’s a club with impressive features for teenagers: No account keeping fees! You’re no millionaire so we don’t expect you to pay large fees. In fact, there are no account keeping or transaction fees! Excellent interest rates!
You want your money to grow? The Winners Club has a good rate of interest which gets even better if you make at least two deposits（储蓄）without taking them out in a month. Convenient Teenagers are busy – we get that. You may never need to come to a bank at all. With the Winners Club you can choose to use handy tellers and to bank from home using the phone and the Internet. You can have money directly deposited into your Winners Club account. This could be your pocket money or your pay from your part-time job!
Mega Magazine included along with your regular report, will definitely assure you to receive a FREE magazine full of good ideas to make even more of your money. There are also fantastic offers and competitions only for Winners Club members. The Winners Club is a great choice for teenagers. And it is so easy to join. Simply fill in an application form. You will have to get permission from your parent or guardian (so we can organize that cool key – card) but it is easy. We can’t wait to hear from you. It’s the best way to choose to be a winner! Which of the following is TRUE about the Winners Club?
| A．Special gifts are ready for parents. |
| B．The bank opens only on work days. |
| C．Services are convenient for its members. |
| D．Fees are necessary for the account keeping. |
The Winners Club provides magazines which ________.
| A．encourage spending |
| B．are free to all teenagers |
| C．are full of adventure stories |
| D．help to make more of your money |
If you want to be a member of the Club, you must ________.
| A．be an Internet user |
| B．be permitted by your parent |
| C．have a big sum of money |
| D．be in your twenties |
What is the purpose of this text?
| A．To set up a club. |
| B．To provide part-time jobs. |
| C．To organize key-cards. |
| D．To introduce a new banking service. |
There are some very good things about open education. This way of teaching allows the students to grow as people, and to develop their own interests in many subjects. Open education allows students to be responsible for their own education, as they are responsible for what they do in life.
Some students do badly in a traditional classroom. The open classroom may allow them to enjoy learning. Some students will be happier in an open education school. They will not have to worry about grades or rules. For students who worry about these things a lot, it is a good idea to be in an open classroom. But many students will not do well in an open classroom. For some students, there are too few rules. These students will do little in school. They will not make good use of open education. Because open education is so different from traditional education, these students may have a problem getting used to making so many choices. For many students it is important to have some rules in the classroom. They worry about the rules even when there are no rules. Even a few rules will help this kind of students. The last point about open education is that some traditional teachers do not like it. Many teachers do not believe in open education. Teachers who want to have an open classroom may have many problems at their schools. You now know what open education is.
Some of its good points and bad points have been explained. You may have your own opinion about open education. The writer thinks that open education is a good idea, but only in theory. In actual fact, it may not work very well in a real class or school. The writer believes that most students, but of course not all students, want some structure in their classes. They want and need to have rules. In some cases, they must be made to study some subjects. Many students are pleased to find subjects they have to study interesting. They would not study some subjects if they did not have to. Open education allows the students to _________.
| A．grow as the educated |
| B．be responsible for their future |
| C．develop their own interests |
| D．discover subjects outside class |
Some students will do little in an open classroom because____.
| A．there are too few rules |
| B．they hate activities |
| C．open education is similar to the traditional education |
| D．they worry about the rules |
Which of the following is NOT mentioned in the passage?
| A．Some traditional teachers do not like it. |
| B．Many teachers do not believe in open education. |
| C．Teachers may have problems in open classrooms. |
| D．The teacher’s feelings and attitudes are important to the students. |
Which of the following best summarizes the passage?
| A．Open education is a really complex idea. |
| B．Open education is better than traditional education. |
| C．Teachers dislike open education. |
| D．The writer thinks that open education is a good idea in practice. |
When prehistoric man arrived in new parts of the world, something strong happened to the large animals; they suddenly became extinct. Smaller species survived; the large, slow-growing animals were easy game, and were quickly hunted to extinction.
Now something similar could be happening in the oceans. That the seas are being over-fished has been known for years and researchers such as Ransom Myers and Boris Worm have shown how fast things are changing. They have looked at half a century of data from fisheries around the world. Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time. According to their latest paper published in Nature, the biomass of large predators (animals that kill and eat other animals) inanes fishery is reduced on average by 80% within 15 years of the start of exploitation. In some long-fished areas, it has halved again since then.
Dr. Worm acknowledges that these figures are conservative (保守的). One reason for this is that fishing technology has improved. Today’s vessels can find their prey using satellites and sonar, which were not available 50 years ago. That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes. In the early days, too, longlines would have been more saturated with fish. Some individuals would therefore not have been caught, since baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past. Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around noise.
Dr. Myers and Dr. Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the date support an idea current among marine biologists, that of the “shifting baseline”. The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past. That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels. Most fisheries are well below that, which is a bad way to do business. The aim of the extinction of large prehistoric animals is to suggest that _______.
| A．large animal were not easy to survive in the changing environment |
| B．small species survived as large animals disappeared |
| C．large sea animals may face the same threat today. |
| D．Slow-growing fish outlive fast-growing ones |
We can infer from Dr Myers and Dr. Worm’s paper that _______.
| A．the stock of large predators in some old fisheries has reduced by 90% |
| B．there are only half as many fisheries are there were 15 years ago |
| C．the catch sizes in new fisheries are only 20% of the original amount |
| D．the number of larger predators dropped faster in new fisheries than in the old |
By saying these figures are conservative (line 1, paragraph 3), Dr worm means that_______.
| A．fishing technology has improved rapidly |
| B．then catch-sizes are actually smaller then recorded |
| C．the marine biomass has suffered a greater loss |
| D．the date collected so far are out of date. |
Dr Myers and other researchers hold that _______.
| A．people should look for a baseline that can’t work for a longer time |
| B．fisheries should keep the yield below 50% of the biomass |
| C．the ocean biomass should restore its original level. |
| D．people should adjust the fishing baseline to changing situation. |
The author seems to be mainly concerned with most fisheries’ _______.
| A．management efficiency |
| B．biomass level |
| C．catch-size limits |
| D．technological application. |
In the world today, there are millions of surveillance cameras, or “spy cams”, watching and monitoring our daily activities. There are some benefits of course, as people who are breaking laws can be watched and caught using cameras and this helps keep our society and public places safe. These cameras are everywhere and most are openly visible on roads, in airports, businesses, shopping centers and government buildings and even in lifts. Even schools have started using spy cams to watch student activity and behaviour.
The cameras are so common now that we hardly ever even notice them. But the problem lies with the ones that are hidden away from our eyes and are unseen. Technology has helped develop tiny cameras that can be very well hidden and they can “spy” on shoppers, workers, babysitters and people in hotels and clubs without the people even knowing.
It is these spy cams that people feel are an invasion of privacy. Recently, in the US, there have been a number of court cases against babysitters whose actions have been recorded by their employers on hidden cameras.
The number of cameras in public and private areas is on the increase and with rising crime rates and the recent terrorist attacks, more and more surveillance cameras are being used to watch us. This means that we all have to be aware that our employers, department stores, police and even some of our friends could be spying on us at any time!In the writer’s opinion, surveillance cameras _______. .
| A．do more good than wrong |
| B．are overused |
| C．should be very popular |
| D．ought to be more widely used |
In what way can the surveillance camera benefit the public?
| A．By helping keep social safety. |
| B．By monitoring the employees. |
| C．By watching the students in class. |
| D．By spying on customers. |
According to Paragraphs 3 and 4, people _______ the use of hidden cameras.
| A．object to |
| B．agree to |
| C．feel happy about |
| D．are fearful of |
Spy cams will be more widely used in the future because _______. .
| A．all people want to spy |
| B．of the invasion of privacy |
| C．people enjoy being watched |
| D．of terrorist attacks |