1、Probability is the mathematical study of the _____ of an event's occurrence.

　　A.desire　　B.likelihood　　C.result　　D.effect

　　2、Driving a car without insurance can have _____ consequences.

　　A.uncertain　　B.disastrous　　C.potential　　D.unworthy

　　3、The police refused to _____ the clues they were working on.

　　A.exhibit　　B.disclose　　C.expose　　D.discern

　　4、What you have done is _____ the doctor's orders.

　　A.attached to　　B.resistant to　　C.responsible to　　D.contrary to

　　5、The shop-assistant was straight with his customers.If an article was of ____quality, he'd tell them so.

　　A.minor　　B.humble　　C.inferior　　D.awkward

　参考答案：

　　1、B　2、B　3、B　4、D　5、C