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

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

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　　[答案] B. likelihood

　　[注释] 句意：概率是对事件发生的可能性的数学研究。

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

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

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　　[答案] B. disastrous.

　　[注释] disastrous 灾难性的。

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

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

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　　[答案] B. disclose.

　　[注释]disclose (=uncover; allow to be seen; make known) 透露, 使显露：

　　1) The lawyer disclosed the details of the case.

　　2) He disclosed that he had made arrangements to buy a new car.

　　exhibit 展览, 展出, 显示, expose 暴露,discern 认出, 发现, 辨别,识别。

　　本题译文：警方拒绝透露他们正在调查的线索。

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

　　A. attached to                B. resistant to

　　C. responsible to            D. contrary to

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　　[答案] D. contrary to.

　　[注释] (be) contrary to与.......相反, 违反

　　1)作表语):What you wish to do is contrary to the regulations.

　　2)作状语：

　　a. If you act contrary to the doctor's advice, you won't get well again.

　　b. Contrary to what I thought, he has proved to be successful.

　　3) 作定语：The boy was swimming in a direction contrary to the current. (这男孩朝着逆流方向游去。)

　　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

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　　[答案] C. inferior

　　[注释] inferior

　　本题译文：这位商店售货员对顾客很坦率。如果货物质量不好, 他就把情况告诉顾客。