“Walk straight，”said a mother crab to her daughter，“stop dragging yourself sideways all the time．”
“Mother，”replied the daughter，“just show me how．If you walk straight yourself I will copy you．”
Don't expect people to do things you would not do yourself．Exercises：
回答下列问题：
①What did the mother crab ask her daughter to do？
②What do yon learn from the story？