An old man was in a bank. He was arguing    1 how much money he had in the bank.   2 he was arguing, a young man came into the bank and said to the old man, "I've just come from your son. He gave me a letter and this piece of silver for you."

    He then gave the silver to the old man. Because the old man had weak eyes-he asked the banker to read him his son's letter.

    The banker read," I have  3  you a piece of silver that weighs 4 kilos."

    The old man was very 4 and asked the banker to give him some dollars for his silver. But when the banker weighed the silver, he  5 that it weighed 5 kilos.

    "The old man will never know," he thought. So he only gave him dollars for 4 kilos of silver.

  Later the banker examined the silver  6  and discovered that it was not silver. It was tin(锡).   7 he ran after the old man and shouted, "You have  8  me. You gave me tin,   9  silver."

  The old man then asked the banker to weigh the piece of tin. It weighed 5 kilos.

  "I am not robbing you, "said the old man. "You are trying to rob me! The piece of silver I gave you 10 weighed 4 kilos!"

阅读下面短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中选出最佳选项，并将选定答案的字母标号填在题前括号内。

     Farley worked for the Canadian government. One day，he was1 to learn more about wolves. Do wolves kill lots of caribou (北美驯鹿)? Do they kill people?

     They gave him lots of food and clothes and guns. Then they put him on a plane and took him to 2 . They put him down and went away. There were no houses or people in this place. But there were lots of animals and lots of wolves.

People tell terrible stories about wolves. They say wolves like to kill and eat people. Farley remembered these stories，and he was 3. He had his gun with him 4 .

     Then one day， he saw a group of wolves. There was a mother wolf with four baby wolves. A father wolf and another young wolf lived with them.

     Farley watched these wolves every day. The mother was a very 5 mother. She gave milk to her babies. She gave them lessons about life. They learned how to 6 food. The father wolf got food for the mother. The young    wolf 7 the children. They were a nice， happy family — wolf family! Farley did not need his8anymore. In a short time，he got on well with the family. Farley watched them for five months. He learned that many stories about the wolves were 9. Wolves do not eat people， and they do not eat many large animals. And he also learned bad things about men. It was men who killed many caribou and wolves.

     Later， Farley wrote a book about wolves. He wanted people to10 them and not to kill them.

    A Chinese student went to England to study by 1. His name was Sun. It is spelt S-U-N just as the word "sun" is spelt.

    England is a country with 2 weather. It is often cloudy and rainy, so the people there don't get 3 sunlight in the year. When the Chinese student arrived at 4 Airport, a tall policeman opened his passport (护照) to 5 the visa (签证). The policeman was 6 to find the Chinese name "Sun" in the passport. He thought it was pronounced just 7 the English word "sun". So he said to the student, "I see your name is Sun. You are wanted here!" 

    The Chinese student felt surprised. So he 8 the policeman, "Is there anything wrong with my passport9 visa? Do I have to 10to my country?" "What?" shouted the policeman, "No, we'll 11 let you go away."

    The Chinese student was worried by now. He thought he was going to be arrested (逮捕). He was sure that he had been 12. But he wondered 13 he had broken the British law. So he asked the policeman again, "What happened? What have I done?"

    Then the policeman began to answer his question with a 14on his face. He said, "Welcome to England! You don't know what you have done, Mr. Sun? You 15 sunlight to England already! So we don't want you to go away."

    Rachel lived in a small town in America. She always wanted to help others when she was young. At the age of 5, she learned about an organization named Locks of Love. It uses hair donations to make wigs(假发) for children who have 1 their hair because of cancer or other illnesses. Rachel then asked her mother to cut her long hair and send 2 to the organization.

    At 8, she learned that other children had no clean 3 in Africa, and she was shocked. When her school began 4 money to build wells(井) there, she asked her parents to stop holding her birthday party. Also, she asked her friends each to donate $9 to the project in Africa 5 giving her birthday presents.

    One year later, it was her 6 birthday on June 12. She made a birthday page on the Internet with a goal of $ 300.However, Rachel was able to raise only $ 200.This made her a little sad.

    Unluckily, Rachel was badly hurt in an accident 7 eight days. That was a terrible shock to her friends. They wanted to find some ways of showing 8 to her. They began donating on Rachel's birthday page. Donations 9 her $ 300 goal quickly and kept rising.

    When it was clear that she would 10 come back to herself(苏醒), her parents donated her organs(器官) to other children. They also donated her hair a final time to Locks of Love.

    More money was being raised. The total donations soon reached $ 100, 000, and then $ 300, 000. So far, more than $ 850, 000 has been raised from all over the world, including donations from the Africans who are moved(感动) by the little American girl.