单选题
Probability is the mathematical study of the ______ of an event's occurrence.
[A] likelihood [B] desirability [C] predictability [D] malleability
【正确答案】
A
【答案解析】likelihood可能,可能性;相当于句中的probability。desirability值得,想要;predictability可预见性;malleability可展性,可锻性。句意:概率是对一个事件发生的可能性的教学研究。