阅读下列材料，从每题所给的四个选项（A、B、C、D）中，选出最佳选项。

    After that, we went on down the river. It was very dark that night and it wasn't easy to see where we were going. Suddenly, a big steamboat came at us very fast, and the next minute it was right over us. Jim and I jumped off the raft (木筏) into the water. The boat hit the raft and went on up the river.

    When I came up out of the water, I couldn't see Jim anywhere. I called out his name again and again, but there was no answer. “He's dead!” I thought. Slowly, I swam to the side of the river and got out. I saw that I was near a big old wooden house. Suddenly a lot of very angry dogs jumped out at me. They made a terrible noise and someone called from the house, “Who's there?”

“George Jackson,” I answered quickly. “I've fallen off a river boat.”

    Well, the people who lived in that house were very kind, and they took me in and gave me some new clothes and a good meal. I told them that my family were all dead, so they said I could stay with them as long as I wanted. It was a beautiful house and the food was good there, so I stayed.

    A few days later one of the slaves in the house came to me and said, “Come with me!” Together, we went down to some trees by the river. “In there!” he said and went away.

    On the ground, I found a man, asleep. It was Jim! I was really pleased to see him. When the steamboat hit the raft, Jim told me, the raft didn't break up. Jim swam after it and caught it. Then he began to look for me.

We decided to leave at once. It's all right living in a house for a little while, but you feel more free and easy and comfortable on a raft.

阅读理解

Stephen Hawking is one of the most famous scientists in the world. He was born in 1942. He's a famous scientist and expert on space and time. Stephen is trying to find the answers to some very big questions, such as: how did the universe begin? How will it end? These questions are very hard for us to understand. But they are very important and can tell us many things about the universe.

Stephen studied Maths and science when he was a student at university. Then, at the age of twenty-one, he became sick. He was so young, but the doctors said to his family, “He has only two more years to live.” As a matter of fact, the doctors were wrong — he didn't die. He can't walk now but he uses a wheelchair. He can't feed himself and get in or out of bed himself. But he refuses to give in. He talks with the help of a computer. After Oxford, Stephen went to Cambridge University. Three years later, in 1965, he became a Doctor of Philosophy.

Because of his serious health problem, it was difficult for him to draw diagrams (图表) or write. So he started to think in pictures. With this new way of thinking, he became one of the most famous scientists in the world. In 1981, he met the Pope (教皇) in Rome. They talked about his ideas. Then in 1988, he wrote his first important book, A Brief History of Time. It was sold more than 5.5 million copies in 33 different languages. He was once invited to China. He impressed us with his self-confidence and humorous conversation.

    What comes to your mind when you hear the word "twins"? Born on the same day? Looking almost the same? Or having the same hobbies? Well, I have a twin brother who was born on a different day from me. We do not look very much alike and we are always interested in different things.

Twelve years ago, my brother, Wayne, was born at eleven fifty-eight on the night of May 28. Five minutes later, I was born一on May 29. Since we were born, I have always been heavier and stronger than Wayne, so people usually think I am the older brother.

    But Wayne is always smarter than L He loves reading and learns many things quickly. He knows a lot about animals, although he does not spend much time with our dogs and birds. He knows e lot about bicycles, but never likes to ride bikes as much as I do.

    Though we are very different, I love my brother very much. I hope both of us can have a happy life in the future.