战国时期的名将陈汤，霸气地斩掉了匈奴单于人头。陈汤认为:“夫胡兵五而当汉兵一，何者?兵刃朴钝，弓弩不利。今闻颇得汉巧，然犹三而当一。”
A、正确
B、错误

A．How to behave oneself in the society.
B．How to face life and death.
C．How to live in harmony with nature.
D．How to be a good learner.