【简答题】Experiments have proved that children can be instructed in swimming at a very early __1___. At a special swimming pool in Los Angeles, children become ___2__ at holding their breath under water even b...
【简答题】Experiments have _______that children can be instructed in swimming at a very early age. At a special swimming pool in Los Angeles, children become _______at holding their breath under water even befo...
【多选题】Experiments have proved that children can be instructed in swimming __1__.At a special swimming pool in Los Angeles, children become expert at __2___underwater even before they can walk. Babies of...