[单项选择]（）是一个国家的基本通货和法定的计价结算货币。
A. 基础货币
B. 法定货币
C. 本位货币
D. 信用货币

An Awful Afternoon
Sometimes I feel that being the mother of three small children is like running a large circus(马戏团). One afternoon last week, my three sons were playing peacefully in the backyard, throwing the ball from one to the other. I jumped at the chance to talk to one of my friends on the phone, but before I got to the phone, I could tell that the boys had begun to quarrel with each other over something. I rushed out to make peace, but before I got there, Charles had begun to fight over this. Even David, the oldest boy, who won’t usually fight with anybody over anything, was involved. First, I made them stop fighting, and then I examined Mark’s eye. I decided that it wasn’t going to develop into a black eye, but I felt that they should suffer at least a little for what they had done. "I’m going to speak to your father about these when he comes home tonight," I said. "He and I will think of h
A. Right
B. Wrong
C. Not mentioned