题目内容：
请在（50）处填写正确答案。
A．A survey found that 79 percent of parents of young athletes wanted their children concentrate on one sport. B．Many of them completely lose interest in sports.
C．Very young kids don’t know why their parents are pushing them so hard.
D．The youth soccer organization has teams for children as young as five.
E．Sports for children have two important purposes.
F．But what about the others, the average kids?
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