填空题

What is a particularly effective solution to the problem

【参考答案】

To teach children to swim when they are still babies.
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单项选择题
Why do students in summer schools learn quickly
A．Because they all work very hard.
B．Because their teachers are all native speakers of English.
C．Because they learn not only in but also out of class.
D．Because they are all advanced students.
填空题
Time of the program:______
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