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.

    Why do Americans struggle with watching their weight, while the French, who consume（消耗） rich food, continue to stay thin? Now a research by Cornell University suggests how life style and decisions about eating may affect weight. Researchers concluded that the French tend to（往往，倾向于） stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.

    According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their life style. They enjoy food and therefore spend a fairly long time at the table, while Americans see eating as something to be squeezed（挤出） between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating long after the French would have stopped. In addition, he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers' markets where they have a choice of fresh fruits, vegetables, and eggs as well as high-quality meats for each meal.

    After a visit to the United States, Mireille Guiliano, author of French Women Don't Get Fat, decided to write about the importance of knowing when to stop rather than suggesting how to avoid food. Today she continues to stay slim and rarely goes to the gym.

    In spite of（尽管） all these differences, evidence shows that recent life style changes may be affecting French eating habits. Today the rate of obesity — or extreme overweight — among adults is only 6%. However, as American fast food gains acceptance and the young reject（拒绝） older traditions, the obesity rate among French children has reached 17% — and is growing.

    Sharing E Umbrella, a new umbrella sharing company based in Shenzhen, China, recently announced that it had lost most of the 300, 000 umbrellas since it was set up.

    China's sharing economy has been growing rapidly, with companies offering anything from bicycles and basketballs to phone batteries for people to rent. Customers make a small deposit（押金）and get to use the thing for a daily cost, with a fine put in place for every day if they fail to return the product in time. It's a simple business model, and market data shows that people see sharing as a cheap and convenient way to cut down waste.

    Zhao Shuping founded the Sharing E Umbrella, an umbrella sharing service, in April. By the end of June, he had already started in 11 major Chinese cities, including Shanghai, Nanjing and Guangzhou. While picking up the umbrellas was relatively simple, as they were made available（可得到的）at bus and subway stations, the return system turned out to be a different matter. "Umbrellas are different from bicycles, "Mr. Zhao told Chinese news site ThePaper.cn. "Bikes can be parked anywhere, but with an umbrella you need something to hang it on. "

    So instead of bothering to return the umbrellas back to a station, a lot of people just took them home, and Sharing E Umbrella has reportedly lost track of most of the 300,000 umbrellas. Considering that borrowing umbrellas requires a 19 yuan deposit, with a fee of 0.50 yuan per half an hour usage, Zhao says that he suffers a loss of 60 yuan per lost umbrella, so the company is now in the red, but he is not ready to stop it just yet. Zhao announces that Sharing E Umbrella still plans to roll out（推出）30 million nationwide by the end of the year.

    Honey (蜂蜜) from the African forest is not only a kind of natural sugar, it is also delicious. Most people, and many animals, like eating it. However, the only way for them to get that honey is to find a wild bees' nest (巢) and take the honey from it. Often, these nests are high up in trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for honey have a strange and unexpected helper—a little bird called a honey guide.

    The honey guide does not actually like honey, but it does like the wax (蜂蜡) in the beehives (蜂房). The little bird cannot reach this wax, which is deep inside the bees' nest. So, when it finds a suitable nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the curious animal or person as it leads them to the nest. When they finally arrive at the nest, the follower reaches in to get at the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always falls to the ground, and this is when the honey guide takes its share.

    Scientists do not know why the honey guide likes eating the wax, but it is very determined in its efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive whenever a beekeeper is taking honey from his beehives, and will even enter churches when beeswax candles are being lit.

    It's 8 a.m., Tuesday, Nov. 18, 2028, and you are headed for a business appointment 300 miles away. You step into your circle, two­passenger air­cushion car, press a series of buttons and the national traffic computer notes your destination, figures out the current traffic situation and signals your car to slide out of the garage. Hands free, you sit back and begin to read the morning paper — which is flashed on a flat TV screen over the car's dashboard. Tapping a button changes the page.

    The car speeds up to 150 mph in the city's countryside, and then hits 250 mph in less built­up areas, driving over the smooth plastic road. You fly past a string of cities, many of them covered by the new domes (圆屋顶) that keep them evenly climatized all year round. Traffic is heavy, typically, but there's no need to worry. The traffic computer, which sends and receives signals to and from all cars on the road between cities, keeps vehicles at least 50 yds apart. There hasn't been an accident since the system began.

    Suddenly your TV phone buzzes. A business partner wants a sketch of a new kind of impeller your firm is putting out for sports boats. You reach for your case and draw the diagram with a pencil­thin infrared flashlight (红外线闪光灯) on what looks like a TV screen lining the back of the case. The diagram is sent to a similar screen in your partner's office, 200 miles away. He presses a button and a fixed copy of the sketch rolls out of the machine. He wishes you good luck at the coming meeting and signs off.

    Ninety minutes after leaving your home, you slide beneath the dome of your destination city. Your car slows down and heads for an outer­core office building where you'll meet your colleagues. After you get out, the vehicle parks itself in a garage to await your return. Private cars aren't allowed inside most city cores. Moving sidewalks and electrams (电车) carry the public from one location to another.

    The days of the hunter are almost over in India. This is partly because there is practically nothing left to kill, and partly because some steps have been taken, mainly by banning tiger-shooting, to protect those animals which still survive.

    Some people say that Man is naturally a hunter. I disagree with this view. Surely our earliest forefathers, who at first possessed no weapons, spent their time digging for roots, and were no doubt themselves often hunted by meat-eating animals.

    I believe the main reason why the modern hunter kills is that he thinks people will admire his courage in overpowering dangerous animals. Of course, there are some who truly believe that the killing is not really the important thing, and that the chief pleasure lies in the joy of the hunt and the beauties of the wild countryside. There are also those for whom hunting in fact offers a chance to prove themselves and risk death by design; these men go out after dangerous animals like tigers, even if they say they only do it to rid the countryside of a threat. I can respect reasons like these, but they are clearly different from the need to strengthen your high opinion of yourself.

    The greatest big-game hunters expressed in their writings something of these finer motives. One of them wrote.

    "You must properly respect what you are after and shoot it cleanly and on the animal's own territory(领地)。You must fix forever in your mind all the wonders of that particular day. This is better than letting him grow a few years older to be attacked and wounded by his own son and eventually eaten, half alive, by other animals, Hunting is not a cruel and senseless killing - not if you respect the thing you kill, not if you kill to enrich your memories, not if you kill to feed your people."

    I can understand such beliefs, and can compare these hunters with those who hunted lions with spears(矛) and bravely caught them by the tail. But this is very different from many tiger-shoots I have seen, in which modern weapons were used. The so-called hunters fired from tall trees or from the backs of trained elephants. Such methods made tigers seem no more dangerous than rabbits.