题目

大自然有许多地理现象，可用“沧海桑田”来描述的是（    ）     A．四季更替         B．地震频发        C．人口变化       D．海陆变迁 答案：       DThere was a pilot(飞行员) and four people in a small plane(飞机). Suddenly there was something wrong with the machine while it was flying (飞行)in the air. The plane began to fall down. The pilot told the people there were only four parachutes(降落伞). They all became worried and started to make excuses(借口). “I must go,” said the pilot, taking one of the parachutes and jumped out. The first person stood up, “I'm a doctor,” he said. “I help people live longer and I save lives.” He took a parachute and jumped out. The next person said, “I must have a parachute. I am a very clever person. I have to attend(参加)an important match. I know I'll win the game because I'll be the cleverest person there.” He picked up a pack and jumped out. Two men were left—an old businessman and a young mountain climber. At this time the plane was going down fast. The businessman said, “Young man, I am old but you're still young. You take the last parachute.” The young mountain climber smiled. “Don't worry,” he said. “We can both jump out because there are still two parachutes. Just now the clever man jumped out with my backpack. ” (　 ) 51 .All the people became worried because _________ . A they couldn't find the parachutes　 B they saw the pilot jump out first C they were afraid（害怕的）the plane would be broken（坏的） and knew there were not enough （足够的）parachutes for each person D there was too much smoke and they couldn't jump out from the plane (　 ) 52. The clever man jumped out with_________. A a parachute　　　　　　　　 B nothing C the backpack of the climber's　 D two parachutes (　 ) 53. All the people thought of themselves（他们自己）except（除了） _________. A the pilot　 B the clever man　 C the doctor　 D the businessman (　 ) 54. From the story we know _________ would be dead（死亡的）. A the clever man　 B the businessman（商人） C the pilot D the doctor (　 ) 55. From the passage we know ________ was a kind-hearted（好心的）man. A the pilot B the mountain climber C the businessman D the doctor