There is an elephant and a monkey They're friends But one day they want to know who is stronger(更强壮的). A rabbit says. The one who can get apples from the tree across the river is stronger. The monkey says，“I can't swim. "The elephant says. "I can swim Please sit on my back. Thus they go across the river. The apple tree is very high. The elephant can't reach the apples on the tree. The monkey climbs up the tree and gels many apples. Then they know they should help each other