新概念英语 · 第二册(美音)
Future champions
Experiments have proved that children can be instructed in swimming at a very early age.
At a special swimming pool in Los Angeles,
children become expert at holding their breath under water even before they can walk.
Babies of two months old do not appear to be reluctant to enter the water.
It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool.
