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。

    The Price of Success

    One problem for schools is that many students do not want to study hard. As a result, they perform (表现) poorly in their classes. This is especially true in the United States, where average scores for math and science are lower than in many other countries. In recent years, schools and charities have been looking for ways to help students get better grades in these subjects. An organization called the LMD Foundation introduced a program called Learn and Earn recently.

    In the program, money was used to get a group of students to study harder in math and science. In addition to the normal school day, they went to after-school classes for four hours each week. The students were paid eight dollars for each hour of after-school class. By the end of the year, the students in the program had higher grades than a similar group of students who had not taken part.

    Not everyone thinks that this is a good idea, though. TV reporter John Tulenko studied data (数据) from a similar program. He found that students' grades went back down when they stopped getting paid. Many people are worried about this. They think that the students study because they want money, not because they enjoy learning. Also, some people believe that these types of programs are a bad idea because it is a large part of a teacher's job to get students to study. If students are given money, some teachers might stop trying to do this.

    However, others believe that these learning programs can be helpful for students from poor families. Many of these students do part-time jobs after school, and some even quit school at a young age to work. Some do this to help get money for their families. Others feel that they can learn more by working than by going to school. Programs like Learn and Earn let these students stay in school and still make money.

    Chocolate is good for your heart, skin and brain. Usually, people think that chocolate is bad for their health. They describe chocolate as “something to die for” or say “death by chocolate”. Now they should bite their tongues! Evidence is showing that some kinds of chocolate are actually good for you in the following ways:

    A happier heart

    Scientists at Harvard University recently examined 136 studies on cocoa—the main ingredient in chocolate and found that it does seem to strengthen the heart．Studies have shown heart benefits from increased blood flow. These benefits are the result of coca's chemicals, which seem to prevent both cell damage and inflammation (炎症)．

    Better blood pressure

    If yours is high, chocolate may help. Jeffrey Blumberg from Tufts University recently found that people with high blood pressure who ate 3.5 ounces of dark chocolate per day for two weeks saw their blood pressure drop quickly.

    Muscle magic

    Chocolate milk may help you recover after a hard workout (锻炼). In a small study at Indiana University, people who drank chocolate milk between workouts did better on a tiredness test than those who had some sports drinks.

    Better for your skin

    German researchers gave 24 women a half-cup of special cocoa every day. After three months, the women's skin was moister (滑润的) and smoother. The research shows that chocolate helps protect and increase blood flow to the skin, improving its appearance．

Brain gains

    It sounds almost too good to be true, but research suggests that chocolate may improve your memory, attention span, reaction time, and problem-solving by increasing blood flow to the brain．

    Grandparents Answer a Call

    As a third-generation native of Brownsville, Texas, Mildred Garza never planned to move away. Even when her daughter and son asked her to move to San Antonio to help with their children, she politely refused. Only after a year of friendly discussion did Ms. Garza finally say yes. That was four years ago. Today all three generations regard the move as a success, giving them a closer relationship than they would have had in separate cities.

    No statistics show the number of grandparents like Garza who are moving closer to adult children and grandchildren. Yet there is evidence (证据) suggesting that the trend (趋势) is growing. Even President Obama's mother-in-law, Marian Robinson, has agreed to leave Chicago and move into the White House to help care for her granddaughters. According to a study by grandparents.com, 83 percent of the people said Mrs. Robinson's decision will influence grandparents in the American family. Two-thirds believe more families will follow the example of Obama's family.

    “In the 1960s we were all a little wild and couldn't get away from home far enough or fast enough to prove we could do it on our own,” says Christine Crosby, publisher of Grand, a magazine for grandparents. “We now realize how important family is and how important it is to be near them, especially when you're raising children.”

    Moving is not for everyone. Almost every grandparent wants to be with his or her grandchildren and is willing to make sacrifices (牺牲), but sometimes it is wiser to say no and visit frequently instead. Having your grandchildren far away is hard, especially knowing your adult child is struggling, but giving up the life you know may be harder.

    Grown-ups are often surprised by how well they remember something they learned as children but have never practiced ever since. A man who has not had a chance to go swimming for years can still swim as well as even when he gets back in the water. He can get on a bicycle after many years and still ride away. He can play catch and hit a ball as well as his son. A mother who has not thought about the words for years can teach her daughter the poem that begins "Twinkle, twinkle, little star" or remember the story of Cinderella or Goldilocks and the Three Bears.

    One explanation is the law of overlearning, which can be stated as follows: Once we have learned something, additional learning trials(尝试) increase the length of time we will remember it.

    In childhood we usually continue to practice such skills as swimming, bicycle riding, and playing baseball long after we have learned them. We continue to listen to and remind ourselves of words such as "Twinkle, twinkle, little star" and childhood tales such as Cinderella and Goldilocks. We not only learn but overlearn.

    The multiplication tables(乘法口诀表) are an exception(例外) to the general rule that we forget rather quickly the things that we learn in school, because they are another of the things we overlearn in childhood.

    The law of overlearning explains why cramming(突击学习)for an examination, though it may result in a passing grade, is not a satisfactory way to learn a college course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little overlearning, on the other hand, is really necessary for one's future development.

    Ever walked to the shops only to find, once there, you've completely forgotten what you went for? Or struggled to remember the name of an old friend? For years we've accepted that a forgetful brain is as much a part of aging as wrinkles and gray hair. But now a new book suggests that we've got it all wrong.

    According to The Secret Life of the Grown-up Brain, by science writer Barbara Strauch, when it comes to the important things, our brains actually get better with age. In fact, she argues that some studies have found that our brain hits its peak between our 40s and 60s — much later than previously thought.

    Furthermore, rather than losing many brain cells as we age, we keep them, and even produce new ones well into middle age. For years it's been assumed that brain, much like the body, declines with age. But the longest, largest study into what happens to people as they age suggests otherwise.

    This continuing research has followed 6,000 people since 1956, testing them every seven years. It has found that on average, participants performed better on cognitive (认知的) tests in their 40s and 50s than they had done in their 20s. Specifically, older people did better on tests of vocabulary, verbal memory (how many words you can remember) and problem solving. Where they performed less well was number ability and perceptual speed — how fast you can push a button when ordered. However, with more complex tasks such as problem-solving and language, we are at our best at middle age and beyond. In short, researchers are now coming up with scientific proof that we do get wiser with age.

    Neuroscientists are also finding that we are happier with aging. A recent US study found older people were much better at controlling and balancing their emotions. It is thought that when we're younger we need to focus more on the negative aspects of life in order to learn about the possible dangers in the world, but as we get older we've learned our lessons and are aware that we have less time left in life: therefore, it becomes more important for us to be happy.

The custom of lighting up flower lamps during the Lantern Festival has a history of over 2,000 years in China. Various kinds of flower lamps with diverse{#blank#}1{#/blank#}(style) are popular in different parts across the country. According to some Chinese folk customs, on the fifteenth day of the first lunar month{#blank#}2{#/blank#}(witness) by a full moon hanging high above the sky, people will light up various lanterns at night to celebrate. It is the time for the whole family{#blank#}3{#/blank#} (enjoy) the bright moon, fire firecrackers, guess lantern riddles, eat the rice glue balls and celebrate the holiday{#blank#}4{#/blank#}(joyful). As a form of art, the Chinese flower lamp combines{#blank#}5{#/blank#}variety of skills, procedures, decoration methods and raw materials. Typical flower lamp includes the dragon lamp, the palace lamp, the blue flower lamp and the dragon- phoenix lamp, etc. 

Today,{#blank#}6{#/blank#}(economy) development and social progress provide the{#blank#}7{#/blank#}(motivate) for upgrading designs and creative styles of lamps. Whether paper lamps, electric lamps{#blank#}8{#/blank#}LED lamps, flower lamps have seen the changes of time.{#blank#}9{#/blank#}has never changed, however, is craftsmanship. Flower lamp is more than a handicraft; It's also an inheritance.{#blank#}10{#/blank#} (watch) flower lamps has become a culture, which has been passed down from generation to generation.