A man of the state of Chu had a spear and a shield for sale．Hew as loud in praises of his shield．“My shield is so strong that nothing can pierce it through．”
He also sang praises of his spear．“My spear is so sharp that it can pierce through anything．”
“What would happen，”he was asked，“if your spear is used to pierce your shield？”
He was unable to give an answer．It is impossible for an impenetrable shield to coexist with as pear that finds nothing impenetrable．Exercises：
回答下列问题：
① What did the man of the state of Chu have？
② why was he unable to give an answer？
③What can we learn from this simple story？ |