A mouse looked through a crack inthe wall to see the farmer and his wife opening a package: What food might itcontain? He was astonished to discover that it was a mouse trap!

    Retreating to the farmyard, the mouse declared the warning, “There is a mouse trap in the house, there is a mouse trap in thehouse.”

    The chicken clucked and scratched,raised her head and said, “Mr Mouse, I can tell you this is a grave concern to you, but it is of no consequence to me, I cannot be bothered by it.”

    The mouse turned to the pig and told him, “There is a mouse trap in the house.” “I am so sorry, Mr Mouse,”sympathized the pig, “but there is nothing I can do about it but pray; beassured that you are in my prayers.”

    The mouse turned to the cow, who replied, “A mouse trap, am I in grave danger, huh?”

    So the mouse returned to the house, head down and depressed to face the farmer's mouse trap alone.

    That very night a sound was heard throughout the house, like the sound of a mouse trap catching its prey. The farmer's wife rushed to see what was caught. In the darkness, she did not see that it was an evil snake whose tail the trap had caught. The snake bit the farmer's wife. The farmer rushed her to the hospital. She returned home with a fever. Now everyone knew to treat a fever with fresh chicken soup, so the farmer took his hatchet to the farmyard for the soup's main ingredient. His wife's sickness continued so that friends and neighbors came to sit with her around the clock. To feed them, the farmer but chered the pig. The farmer's wife did not get well, in fact, she died, and so many people came for her funeral. The farmer had the cow slaughtered to provide meat for all of them to eat.

    So the next time you hear that someone is facing a problem and think that it does not concern you, remember that when the least of us is threatened, we are all at risk.

Read the advertisements, and then choose the best answers.

Driver Wanted

1). Clean driving license   2). Must be of smart appearance.    3). Aged over 25.

Apply to：Capes Taxis, 17 Palace Road, Boston

Air Hostesses for International Flight Wanted

1). Applicants must be between 20 and 33 years old.

2). Height 1.6m to 1.75m.    3). Education to GCSE standard.

4). Two languages. Must be able to swim.

Apply to: Recruitment office, Southern Airlines, Heathrow Airport West HR37KK

Teachers Needed

For private language school. Teaching experience unnecessary.

Apply to: The Director of Studies, Instant Language Ltd, 279 Canal Street

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

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。

    In an ideal world, people would not test medicines on animals. Such experiments are stressful and sometimes painful for animals, and expensive and time-consuming for people. Yet animal experimentation is still needed to help bridge vast gaps in medical knowledge. That is why there are some 50 to 100 million animals used in research around the world each year.

    Europe, on the whole, has the world's most restrictive (严格的) laws on animal experiments. Even so，its scientists use some 12 million animals a year, most of them mice and rats, for medical research. Official statistics show that just 1.1 million animals are used in research in America each year. But that is misleading. The American authorities do not think mice and rats are worth counting and, as these are the most common laboratory animals, the true figure is much higher. Japan and China have even less comprehensive (全面的) data than America.

    Now Europe is reforming the rules governing animal experiments by restricting the number of animals used in labs. Alternatives to animal testing，such as using human tissue or computer models, are now strongly recommended. In addition, sharing all research results freely should help to reduce the number of animals for scientific use. At present, scientists often share only the results of successful experiments. If their findings do not fit the hypothesis (假设) being tested, the work never sees the light of day. This practice means wasting time, money, and animals' lives in endlessly repeating the failed experiments.

    Animal experimentation has taught humanity a great deal and saved countless lives. It needs to continue，even if that means animals sometimes suffer. Europe's new measures should eventually both reduce the number of animals used in experiments and improve the way in which scientific research is conducted.

    People are being lured(引诱)onto Facebook with the promise of a fun and free service without realizing they're paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.

    Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Facebook, because people don't really know what their personal details are worth.

    The biggest problem, however, is that the company keeps changing the rules. Early on, you could keep everything private. That was the great thing about Facebook—you could create your own little private network. Last year, the company changed its privacy rules so that many things—your city, your photo, your friends' names—were set, by default(默认), to be shared with everyone on the Internet.

    According to Facebook's vice-- president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information, they have a “less satisfying experience.”

    Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they're online connecting with their friends?

    The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Commission to set guidelines for social-networking sites. “I think the senators rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.

    I suspect that whatever Facebook has done so far to invade our privacy, it's only the beginning, which is why I'm considering deactivating(撤销)my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't know. That is too high a price to pay.

    Ben Lecomte, a French long-distance swimmer, dropped into the water Tuesday at Choshi, Japan, and embarked on his attempt to become the first person to swim across the Pacific Ocean, BBC News reports.

    Six years in the planning, the 5,500-mile effort is expected to take five to six months, with Lecomte swimming eight hours a day and covering an average of 30 miles daily, according to his website.

    His route to San Francisco will take him through the Great Pacific Garbage Patch, an area three times the size of France where large amounts of garbage and plastic waste have collected, CNN reports.

    Lecomte will be accompanied by a specially outfitted support boat named Discoverer. He will take rest periods on the boat, but it will return him to his stopping point each day to make sure he swims the entire distance.

    In addition to accomplishing a first, Lecomte said, he wants to draw attention to the problems of ocean pollution and climate change. A team of scientists plan to conduct research for 12 scientific institutions, including NASA and the Woods Hole Oceanographic Institution, while he is making his swim.

    Lecomte is no stranger to feats of long-distance open-water swimming. In 1998, he swam 4,000 miles across the Atlantic Ocean. On that swim he encountered sharks and stingrays. This time, he said, he will be wearing a shark-repellent bracelet.

    One of the challenges will be making sure he has enough energy each day, and Lecomte said he intends to consume 8,000 calories daily.

    Few of us make money by losing sleep. But three graduate students at Brown University in Providence built a company around sleep deprivation(睡眠不足).

    Jason Donahue, Ben Rubin and Eric Shashoua were working late nights in Brown's business and engineering schools. They began thinking about ways to sleep better. They discovered they weren't alone in burning the midnight oil. Around 20% of Americans get less than six hours of rest a night.

    The friends imagined a smart alarm clock that could track how much time people spend in the most restorative(有恢复作用的) stages of the sleep cycle: REM (rapid eye movement) and deep sleep. What would it cost to design such a thing? Five years of research, 20 employees, $14 million and a whole lot of doubting from investors and scientists.

    Their company, Zeo, based in Newton, Mass, launched its product in June, 2009. The Zeo device uses a headband with tiny sensors(传感器) that scan your brain for signs of four sleep states-REM, light, deep and waking sleep. The smart alarm clock displays a graph of your sleep pattern and wakes you as you're not in REM sleep. In the morning you can upload the data to the company's Web site, and so track your sleep over time. Most of the feedback(反馈) comes in the form of Zeo's ZQ score showing how well you've slept.

    “Zeo allows people to unlock this black box of sleep,” says Dave Dickinson, a health-care CEO.

    Whether any of this actually improves sleep is up to the consumer, who will also need to make lifestyle changes like cutting out alcohol before bedtime or caffeine after 3 P.M.

    For now the company is selling Zeo online only. Dickinson also plans to spread it to countries such as Australia, where sleep deprivation approaches US levels.