In this section, you will hear five short news items. After each item, which will be read only once, there will be a fifteen-second pause. During the pause, read the question and the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the answer sheet with a single line through the centre. Which of the following is NOT mentioned as one of the penalties
A fine.
B. Expulsion.
C. A jail term.
Death sentence.
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With increased taxation and rising prices, Eric is going to ______ on quite a lot of things, such as clothes, records and so on.
A. cut off
B. cut down
C. cut in
D. cut across
Which of the following statements is true about the Research and Development Department
A. It is a department within the Marketing Division.
B. It has two laboratories, one at each production plant.
C. The head of this department is Bill Williamson.
D. It is a department within the Finance Division.
在复平面内,复数z=sin2+icos2对应的点位于______
A. 第一象限
B. 第二象限
C. 第三象限
D. 第四象限
某银行柜台设有一个服务窗口,假设顾客办理业务所需时间互相独立,且都是整数分钟,对以往顾客办理业务所需时间统计结果如下。办理业务所需时间(分)12345频率0.10.40.30.10.1 从第一个顾客开始办理业务时计时。 (1)估计第三个顾客恰好等待4分钟开始办理业务的概率; (2)X表示至第2分钟末已办理完业务的顾客人数,求X的分布列及数学期望。