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 the tenth grade，I began working for free at a vet's that was run by a friend. I wanted to get experience for what I thought would be my future job. However，on one particular Saturday morning I learnt something perhaps more important.

    The hospital was in the middle of one of the poorer sections of the city and some people could only pay for the most basic treatments. On this Saturday，a man and his young son，who was probably about 7 years old，walked in with a small cat in a cardboard box. There was something wrong with the cat's left eye. But the man could not afford to pay for the cost of the medicine. He kept quiet for a while，and then he asked where the nearest animal shelter was. Hearing this，his son cried and started to argue with him. All of a sudden，an older woman who was sitting in the waiting room stood up，walked up to the counter，and told the man that she would pay for the cost. The man thanked her and the son got to keep a healthy cat.

    I always thought it was the right thing to help out a needy person，but I only saw people do acts of kindness on TV or in movies. What the woman did made me believe that these things do happen in real life，and quite often.

Now，when I can't decide whether to help someone who is in need，I remember this woman，and then I have the courage to step up to the plate. Sometimes other people follow.

    Competition occurs naturally between living beings which co-exist in the same environment. In modern society there is a great deal of argument about competition. Some value it highly, believing that it is responsible for social progress and prosperity(繁荣). Others say that competition is bad ;that it sets one person against another ;that it leads to unfriendly relationship between people.

    I have taught many children who held the belief that their self worth relied on how well they performed at tennis and other skills. For them playing well and winning are often life and death affairs. In their single minded pursuit(追求)of success, the development of many other human qualities is sadly forgotten.

    However, while some seem to be lost in the desire to succeed, others take an opposite attitude. In a culture which values only the winner and pays no attention to the ordinary players, they strongly blame competition. Among the most vocal are youngsters who have suffered under competitive pressures from their parents or society.

    Teaching these young people, I often observe in them a desire to fail. They seem to seek failure by not trying to win or achieve success. By not trying, they always have an excuse :”I may have lost, but it doesn't matter because I really didn't try.” What is not usually admitted by themselves is the belief that if they had really tried and lost, that would mean a lot. Such a loss would be a measure of their worth. Clearly, this belief is the same as that of the true competitors who try to prove them-selves. Both are based on the mistaken belief that one's self respect relies on how well one performs in comparison with others. Both are afraid of not being valued. Only as this basic and often troublesome fear begins to dissolve (缓解) can we discover a new meaning in competition.

    The tough economy is bringing new shoppers to the secondhand market.Plato's Closet in Charlotte,NC is a private company,which mainly buys and sells used clothes.While Charlotte has outstanding secondhand stores offering high-end and graceful brands for women,most of their stock applies to adults.Plato's closet targets teens and those in their 20s.

    Plato's Closet,with stores in Matthews and the university area,sells clothes and accessories（装饰品）that are currently popular at about one third the retail（零售）prices.

    The two hottest brands,for buying and selling,are Hollister and Abercrombie & Fitch.Even though the offerings tend to be suitable for young people,there are a variety of shoppers at Plato's Closet of varying ages.Women in their 30s,40s,and older could easily find a purse,jacket or piece of jewelry they like.

    If you are selling

    Unlike higher-end resale stores which usually work on consignment（寄售）,Plato's Closet buys on the spot.

    Items can be gently used,but must be in very good condition.

    Clothes should be less than two years old and styles should be the same as those still being sold at the shopping center.

    There is no negotiation;prices are set company-wide.If what you sell amounts to $30 or less,they'll give you cash.More than that,you'll get a Visa cash card.

    Secondhand success

    Don't get discouraged if you can't find something on your first trip.Resale shops are always getting new lists of goods and change their styles with each season.

    Be sure to check each piece carefully before buying.

    Price comparison

    Jackets: New York & Company black blazer,$12; retail: $37.

    Pants: Express Editor-style pants,$12; retail: $69.90.

    Shoes: Nine West black peep-toe pumps,$12; retail: $89.

    Jewelry: Necklaces,$3-$5; retail: $18-$30.

    An open office is supposed to force employees to cooperate. To have them talk more face to face. To get them off instant messenger (IM) and brainstorming new ideas. But a recent study by two researchers offers evidence to support what many people who work in open offices already know: It doesn't really work that way. The noise causes people to put on headphones and tune out. The lack of privacy causes others to work from home when they can. And the sense of being in a fishbowl means many choose email over a desk-side chat.

    Ethan Bernstein and Stephen Turban, two Harvard Business School professors, studied two Fortune 500 companies that made the shift to an open office environment from one where workers had more privacy. Using “sociometric” electronic badges (徽章) and microphones, as well as data on email and instant messenger use by employees, the researchers found in the first study that after the organization made the move to open-plan offices, workers spent 73% less time in face-to-face interaction. Meanwhile, email use rose 67% and IM use went up 75%.

    The participants wore the badges and microphones for several weeks before the office was redesigned and for several after, and the company gave the researchers access to their electronic communications. The results were astonishing. “We were surprised by the degree to which we found the effect,” Bernstein said. The badges could tell that two people had a face-to-face interaction without recording actual spoken words. The researchers were careful to make sure other factors weren't in question—the business cycle was similar, for instance, and the group of employees were the same.

    In a second study, the researchers looked at the changes in interaction between specific pairs of colleagues, finding a similar drop in face-to-face communication and a smaller but still significant increase in electronic correspondence.

    Another wrinkle in their research, Bernstein said, is that not only did workers shift the way of communication they used, but they also tended to interact with different groups of people online than they did in person. Moving from one kind of communication to another may not be all bad—“maybe email is just more efficient,” he said—but if managers want certain teams of people to be interacting, that may be lost more than they think. The shift in office space could “have strong effects on productivity and the quality of work”.

    Bernstein hopes the research will offer evidence that will help managers consider the possible trade-offs of moving to an open office plan. In seeking a lower cost per square foot, they buy into the idea that it will also lead to more cooperation, even if it's not clear that's true. “I don't blame the architects,” he said. “But I do think we spend more of our time thinking about how to design workplaces based on the observer's angle”—the manager—“rather than the observed.”

    Back in 2009, China was wrongly accused by the West of "controlling" the Copenhagen talks on climate change. By then China had truly carried out strict policies to reduce the energy consumption of economic activities and at the international level, the top Chinese leaders participated in round-clock efforts to cooperate with the major players to build a united front for efforts to solve global warming. But China was finally misjudged.

    This misjudgment caused China's scholars to rethink China's climate change communicative ways. Among them was Zheng Baowei, journalism professor of Renmin University of China, who realized China had to better shape its communication on its environmental protection.

    Delightfully, the efforts have paid off. Zheng set up a top-level international group advising his research team. He is in charge of doctoral candidates on climate change communication. Climate awareness surveys have been conducted, and a package of communication tools has been designed. Many seminars have been arranged.

    Recently, he arranged a seminar on climate change and health communication on the changing situation both in China and the world. First of all, this stressed that China's policy has developed from reducing its energy consumption and pollution prevention to the important goals of achieving a "Beautiful China" and "'Healthy China, "while coming up with plans to realize an ecological civilization since late 2012. With such goals, China played a leading role in securing the Paris climate change deal in 2015 together with the United States and European Union. In Paris, China promised to let out its carbon to the maximum in 2030.

    It is a demanding job communicating climate change and other topics of lasting development well. Despite that, some foreign scholars have realized China's smart ways in presenting the green concepts. They appreciated China's idea of building a "Beautiful China" and "Healthy China" and said it can he expanded into an idea of a "Beautiful World" and "Healthy World".

    Looking back from how China had followed the steps of the industrialized countries in advocating climate fight, people find now its own green ideas are being recognized.

    When we are young we are taught that it's wrong to lie and we should always tell the truth. Unfortunately, most children lie even if they're told not to. Research carried out at the Institute of Child Study at Toronto University has shown that this might not be such a bad thing. Apparently (显然地), children who tell lies when they're two years old have a good chance of becoming successful adults (成年人).

    According to the research, at the age of two, 20 percent of children lie. At the age of three, 50 percent lie, and at four almost 90 percent lie. By the age of 12 almost every child tells lies.

    Lying needs much brain work. And the better the lie is, the more work the brain has to do. By training the brain early, researchers believe children will be able to think more clearly when they are adults.

    Recent research, carried out by the Science Museum in London, has shown some interesting facts about the way we lie as adults. According to the research, the average British man tells three lies every day, that's over 1,000 lies a year. However, the average woman apparently only lies twice a day.

    Most people think women are better liars (说谎者) than men although in fact they tell fewer lies. Popular women's lies include 'Nothing's wrong, I'm fine', 'I don't know where it is, I haven't touched it', and 'It wasn't that expensive'.

    Some people say you can lie as long as it's a white lie. A white lie is a lie told to avoid hurting someone's feelings. One of the most common lies for both men and women is 'It's just what I've always wanted', said after opening a present from their partner.