阅读下面短文,然后从每小题所给的A、B、C、D四个选项中选出最佳选项。
A young man buys many fruits, like apples, pears and dates. He looks very 1 with the fruits in his bag. He sits near the road to 2 them happily.
An old man sees him and says, " Eating too many 3 is good for teeth but bad for your body. "
The young man asks 4 , " How about dates? "
The old man answers, " The dates are good for body 5 bad for teeth. "
The young man 6 for a minute. Then he stands up and says, " I can eat pears 7 my teeth and don't swallow them. And I can swallow dates and don't chew. " The young man thinks it is 8 a good idea. It is not bad for his body and teeth.
Then the young man 9 a date into his mouth and swallows it. The old man wants to stop him, but it is too 10 . He says to the young man, " Think over before doing something and don't be in a hurry. "