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).

    Billy's favorite color is orange. But he can't see what orange looks like. Billy is blind.

    A month after he was born, his mother noticed that his eyes weren't quite as big as a normal baby's. “Billy would never be able to see.” the doctor told his mother. After that Billy's mother began talking to him, describing things she saw outside the window. She described everything to him.

    Billy does not only depend on his mother's descriptions to learn about the world around him. He sees with his cars and his hands, too. He has perfect hearing. When people make phone calls, he can tell the numbers they dial(拨).

    Billy loves computer science. He began teaching himself computer programming when he was just seven years old. His dream school would be Stanford University. He gets top grades in his classes, making that a real possibility.

    “You can't let excuses get in the way of your dreams, and if you do that you can't move forward and reach your goals, “said Billy.

    I saw an accident on my way to the college three days ago.

    I was waiting for the bus at the but stop. When the bus came, I got on the bus and sat on the window side. The bus started to move. After about five minutes, the bus stopped to wait for the signal(信号灯). I looked outside and saw an old man crossing the road. There were not many people on the road. A boy was riding a motorbike very fast form my side. It seemed that he did not see the signal. When the boy took notice of the old man, he tried to slow down his motorbike but there was no time. He collided with the old man very badly. The old man was thrown far away The boy also fell down. His head hit the road but it was saved because of his helmet(头盔). Both of them lay in the pool of blood. Many people gathered(聚集) around them and gave their ideas. I got afraid because I saw the whole accident. Then a woman stopped and called the ambulance( 救护车 ). It came quickly and rushed them to hospital.

    The next day I read the newspaper. The old man died in the ambulance but the boy was saved in time. This was the most terrible accident I saw ever in my life.

    A young man couldn't sleep well every night. He was very worried. One day he went to see the doctor. The doctor looked him over carefully. But nothing wrong with him. The doctor told him to count from 1 to 10 again and again. “Keep doing it until you fall asleep,” the doctor said.

    After a few days, the young man came to the doctor again. But to his surprise, the doctor found the young man was even worse than before! “Didn't you count as I told you?” the doctor asked. “Yes, I did,” the young man answered. “But every time when I reached eight, I couldn't help jumping from bed.”

    “But why?” the doctor wanted to know. The young man said, “I am a boxer.”(拳击运动员)

根据短文内容完成下列句子。

    Bill is a good boy. He is seven years old, and he likes going to school. But he cannot get up early.

    He always wakes up until (直到) nine or ten o'clock in the morning.

    His mother doesn't want him to be late for school, so she buys an alarm clock for him. She says to Bill, "You must get up when you hear the clock ring." "Yes, Mum," Bill answers. From then on, when he hears the clock ring at six o'clock in the morning, he gets up quickly.

    One day his mother forgets to wind up (上发条) the clock. And the next morning, Bill doesn't get up on time. It's time for breakfast, so his mother goes to wake Bill up, Bill is in bed and his eyes are open. "Why don't you get up?" his mother asks, "You tell me that I must get up when I hear the clock ring, so I am waiting for the clock to ring," Bill said.