According to the author, it is a genuine happiness______. A．to earn a lot of money B．to do highly rewarded jobs where the mind must be kept numb C．to spend one's life on operating an adding machine D．to use one's mind on valuable subjects
A. A．to B.to C.to D.to
【参考答案】
D 由文中的第一句话“Oneoftheteacher’srewardsisthatheisusinghismin......