阅读下列材料，从每题所给的A、B、C、D四个选项中选出最佳选项。

    People often ask why "Uncle Sam" is a nickname (绰号) for the United States of America. The reason is strange but simple.

    Once there was a man called Samuel Wilson. He was born in Arlington, Massachusetts, on 3 September 1766. His nickname was "Uncle Sam". When Sam Wilson was 14 years old, he joined the army and fought in some battles (战役). At the end of the war (战争) he went to live in the state of New York. He opened a meat-packing business (生意) there.

Sam Wilson worked hard and loved his country. People in the city liked him. One day in 1812, a reporter from a newspaper visited his business. The reporter looked at some boxes of meat. He saw the letters "EA-US" on the sides of the boxes.

    "What do those letters mean?" he asked one of the workers.

    "The ‘EA' stands for (代表) ‘Edward Anderson'," the workman replied. "The boxes of meat are for him."

    "What about the letters ‘US'?" the reporter asked.

    These letters really stood for "United States", but the workman wanted to have a laugh. "Oh," he said. "They stand for Sam Wilson. He has this company(公司). We call him ‘Uncle Sam'."

    The worker did not think that the reporter would believe him. But the reporter wrote a story about his visit to Sam Wilson's business. He wrote that his workers called him "Uncle Sam" and that "Uncle Sam" meant the United States.

Many people liked using the name "Uncle Sam" as a nickname for the United States and soon they were all using it. In 1961, almost 150 years later, the United States government(政府) made the nickname "Uncle Sam" official (官方的).

Dear Sir or Madam，

    Last Thursday， I traveled on the 8：00 a.m. train from Glasgow to London King's Cross and I was quite angry with the service of your company.

    The train didn't come on time and it was forty minutes late when it left Glasgow. A man at  the station said sorry to us， but he didn't give us any reasons for the delay(误点) . We then had further delays on the way and had to wait another thirty minutes. As a result， I missed my plane from London to Frankfurt and had to wait for several hours.

What's more， the service on the train was also very poor， The trip took more than five hours. Unluckily， we could buy nothing but some soft drinks on the train. Worst of all， something was wrong with the air conditioning ( 空调系统) and it got hotter and hotter in the train. Before we reached King's Cross， the temperature was over 40℃.

    Because of your poor service， I feel you should pay me compensation(赔偿).

    I am looking forward to hearing from you.

Yours faithfully

David Roberson

    A 15-year-old student who invented a flashlight(手电筒) getting power from the holder's body heat is going home today from California with a big prize and a chance to do further research.

    Ann Makosinski was the only Canadian among the four winners at Google's international science competition. Thousands of young scientists from around the world took part in the competition.

    Winning the science and technology competition was "a surprise". Ann said, "I think it will have a great influence on my future."

    Ann thanked her family for encouraging her interest in science and said that her first toy was a box of transistors(晶体管).

    Ann's prize includes $ 25,000 and a "once in a-lifetime expericnce" from Google for her Hollow Flashlight, which has no moving parts or batteries.

    The idea for the invention came from seeing unwanted batteries and her friend's experience. When Ann visited a friend in the Philippines, she saw the friend couldn't study when it became dark because there was no electricity or light. She saw the need for a flashlight that has no batteries - Hollow Flashlight.

    In her project, Ann wrote "I made two flashlights that do not use any batteries or harmful materials. They do not create any noise and will always work. The flashlight needs at least a 5℃ temperature difference between the holder's body and the environment around to produce light."

    A video of Ann explaining how she creatcd the flashlight has been watched more than 1.4 million times on the Internet.

    Though Ann was successful, she has not made a decision about her career path. Ann hopes that she can find a way to join her love of film and science together.

    The four winners were chosen from 15 final competitors from eight countries. The competition attracted thousands of students in 120 countries.

    There was once a little grey planet mat was very sad. The people living there didn't look after it. They polluted me whole planet so much with rubbish that there were no plants or animals left.

    One day, a little boy was walking on the planet when he passed a cave (洞穴) and noticed a small red flower inside. The flower was very sick, almost dying, so the boy carefully dug up the flower with roots, soil and everything. Then he started looking for a place where he could look after it. He searched all over the planet, but everywhere was so polluted that there was no place the flower could possibly live in. Then he looked up at the sky and noticed the Moon. It seemed to the boy that maybe the plant could live there. So the little boy put on his astronaut suit, and climbed into a spaceship. He put the little red flower in the back, and they went to the Moon.

    Far away from all that pollution, and with the boy visiting it every day to take care of it, the flower started to grow. The flower was so well cared for that it soon germinated, giving birth to others, and these other flowers spread onto other flowers. Before long, the whole Moon was completely covered with flowers.

    That's why, whenever the little boy's flowers open up, for a few minutes the Moon turns red, like a warning light. Maybe it's telling us that if we don't look after our planet, the day will come when flowers will only be able to grow on the Moon.

    Fiona likes to listen to music. She likes to listen to classical music. Now she is listening to Beethoven's Symphony (交响曲) No. 5. The music is about fate knocking on the door. Fate is the unseen power of life. Fate changes our lives. Fate designs our lives. Fiona likes this music. She feels the power of music.

    Suddenly, somebody knocks on her door. She goes to the door and opens it. There is a man at the door. The man is old. He has grey hair and a grey beard (胡须). She doesn't know who the person is. The man says he is her father. She closes the door in front of the man. She stays at the door and thinks. She has a father. But he is dead. She doesn't know the man at the door. She doesn't understand why he says he is her father. She wants to call the police. Just then she can see a photo under the door. The man is giving her a photo. She looks at the photo. She can see herself with a man she doesn't know. It is her because she took many photos when she was a young girl. Is the man who is standing in front of her door her father? She must find the answer.

    She opens the door. She asks the man whether he is lying or not. The man tells her he is telling the truth. She invites him for a cup of coffee. They sit down and drink coffee. They start talking about life. He tells her everything that he knows. She listens. Sometimes she is surprised. Sometimes she cries. Sometimes she laughs. They are listening to Beethoven. This time it is not fate, but her father who is knocking on the door.