Three men traveling on a train began a conversition about the world's greatest wonders. “ In my opinion,” the first man said, “ the Egyptian pyramids are the world’s greatest wonder. Although they were built thousands of years ago, they are still standing. And remember: the people who built them had only simple tools. They didn’t have the kind of machinery that builders and engineers have today. “ I agree that the Egyptian pyramids are wonderful,” the second man said, “ But I don’t think they’re the greatest wonder. I believe computers are more wonderful than the pyramids. They have taken people to the moon and brought them back safely. They carry out mathematical calculations in seconds that would take a person a hundred years to do.” He turned to the third man and asked, “ What do you think is the greatest wonder in the world?” The third man thought for a long time, then he said, “ Well, I agree that the pyramids are wonderful, and I agree that computers are wonderful, too. However, in my opinion, the most wonderful thing in the world is the thermos(保温瓶).” And he took a thermos out of his bag and held it up. The other two men were very surprised. “ A thermos?” they exclaimed(大声说), “ But that’s a simple thing.” “ Oh, no, it’s not,” the third man said, “ in the winter you put in a hot drink and it stays hot, in the summer you put in a cold drink and it stays cold. How does the thermos know whether it is winter or summer?” 小题1:The travelers passed the time on the train by talking about _______. A．the journey B．the train C．themselves D．wonderful things 小题2:The three men could not agree on what the world’s greatest wonder was because _______. A．they could not think of anything very wonderful B．they all had different ideas C．they could not prove that their opinions were right D．the journey ended too soon 小题3: The first man thought the pyramids were the most wonderful things in the world because _______. A．they were very beautiful B．they were Egyptian C．they had been built with very simple tools D．they could do mathematical calculations 小题4:The third man thought a thermos was the most wonderful thing in the world because _______. A．it lasted longer than the pyramids B．it cost less than a computer C．he thought it knew whether it was winter or summer D．the other two men were surprised when he told them about it 小题5:The third man was not very clever because _______. A．he could not think of anything to say B．he did not understand how a thermos works C．he did not think the pyramids were wonderful D．he did not know anything about computers