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
stomach 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 th 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 [单项选择]
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America has had many Presidents who have been famous all over the world. People from other countries know the names Washington, Kennedy and so on. However, many men who have served as President of the United States have not been famous in other parts of the world. One example is J ·Q ·Adams, the sixth man to serve as U·S·President. 我来回答: 提交
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