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A university professor recently made several experiments with different animals to find out which was the most intelligent. He found out that the monkey was more intelligent than other animals.In one experiment the professor put a monkey in a room where there were several small boxes. Some boxes were inside other boxes. One small box had some food inside of it. The professor wanted to watch the monkey and to find out how long it would take the monkey to find the food. The professor left the room. He waited a few minutes outside the door. Then he knelt down and put his eye to the keyhole. What did he see To his surprise he found himself looking directly into the eye of the monkey. The monkey was looking at the professor through the other side of the door. What was the purpose of the professor’s experiments()
The first flight of the Space Shuttle Columbia in the spring of 1981 was a revolutionary development in space exploration. Unlike the rockets of the previous twenty years, Columbia has the enormous advantages of being specially designed to return to earth and make further flights. Among a large number of projects scientists are investigating its future use. The most exciting, perhaps, is that the first steps can now be taken towards establishing human colonies in space. The present Space Shuttle can only stay in space for about a week, but it could take people out to build "islands" where they stay for longer periods. By the year 2050 scientists estimate that man will be able to construct permanent settlements.The first "islands" would be energy stations. There would be no hope of establishing colonies in space unless people could obtain energy there, instead of getting it from the earth. However, if the original could convert solar energy into electricity, it would be possible to provide the equivalent of a filling station for cars on earth, allowing the Space Shuttle to refuel and stay in orbit for longer periods of time.If this initial project were successful, much larger solar energy stations would be constructed later with materials brought out by the Shuttle.Eventually, man would be able to construct an "inhabitable planet" in space. According to the talk, what will man probably be able to do by the year 2050()
M: How did you do on the examW: I passed, but I didn’t do so well. The essay question was the worst part for me. How about youM: I did all right on everything except the essay question, too. I wasn’t really prepared to write about the tribes in the rainforests of Brazil. We studied the rainforests for only a few days. I didn’t think it would be on the test.W: Me either. I thought for sure that he would ask us something about the Incas in Peru or maybe the mountain peoples in Chile. I studied most of the material on these groups and didn’t spend much time on the people of the rainforest. Do you know how much theexam counts towards our final gradeM: I think it’s 30 percent.W: Thirty percent! Oh no, I’m in deep trouble this time! That means I’ll have to get A’s on everything else to get a decent grade.M: That may not be too hard. We’ve already gone through most of the readings that the class is supposed to cover. After next week it will just be review. But then there is the final paper, of course.W: Yes. I was hoping to do well on this test so I could relax when writing my paper, but now it looks like I’ll have to spend more time preparing to write that paper.M: Well, I will too. Hey, I’m kind of hungry. I think I’ll go to get some lunch. Do you feel like joining meW: I’d love to, but I have to go home and study. I’ll call you later. What is the woman upset about()
夜间驾驶人对事物的观察能力明显比白天差。
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