[单项选择]A Dolphin and an Astronomer One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. Sagan was standing on the edge of one of the tanks where several of these friendly, highly intelligent creatures were kept. Elvar had just swum up alongside him and had turned on his back. The dolphin wanted Sagan to scratch his stomach again, as the astronomer had done twice before. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water and made a sound just like the word "more". The astonished astronomer went to the director of the institute and told him about the incident. ’Oh, yes. That’s one of the words he knows,’ the director said, showing no surprise at all. Dolphins have bigger brain in proportion to their body size than humans have, and it has been known for a long time that they can
A. Right
B. Wrong
C. Not mentioned

[单项选择]
One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. He was standing at the edge of one of the tanks where several of these highly intelligent, friendly creatures were kept. Elvar had just swum up alongside him and had turned on his back. He wanted Sagan to scratch his stom ach again, as the astronomer had done twice before. But this time Elvar was too deep in the water for Sagan to reach him. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water into the air and made a sound just like the word "More!"
The astonished astronomer went to the director of the institute and told him about the incident. "Oh, yes. That’s one of the words he knows," the director said, showing no surprise at all.
Dolphins have bigger brains in propo
A. Sagan had turned his back
B. it was part of the game they were playing
C. he wanted Sagan to scratch him again
D. Sagan wanted him to do this

[简答题]One day, science says a glass of red wine a day will help us live longer.

[单项选择]

One day two scientists were quarrelling about whose watch was better, the German one or the Japanese one. Since they were scientists, they decided to do an experiment to test the watches. They went into their lab and filled a basin with water, put the watches in, waited for 20 minutes and took them out.
They could see there was something wrong with both watches. They observed them for several hours before speaking to each other. They both silently found that the German watch was losing 60 minutes and the Japanese are doubled that.
The scientist with the Japanese watch then slowly raised his head and said, "Both watch are out of work, but my watch is right more often than yours, so it’s better." The scientist with the German watch went home without saying a word.

The two scientists were quarrelling at the beginning of the story, because （　）.
A. the Japanese watch was better
B. the German watch was better
C. each of them thought his own watch was better than the other’s
D. both the watches were wrong