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【简答题】
已知离散型随机变量X在2,4,6,7,9共5个值上等概率分布,则E[X]= 。
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反馈参考答案：
举一反三
【简答题】Toward midday, the climbers were tired. They could hardly put one foot before the other.
【单选题】After our pleasant conversation, I told him that I would see him _____
A.
the later
B.
latter
C.
later
D.
latest
【单选题】I told him that I ________ my work soon.
A.
finished
B.
am finishing
C.
would finish
D.
finish
【单选题】When I told him that I wrote _________, he thought for a long time that it was _________ the handwriting which I meant, for he could write a _________ good hand himself.
A.
considerably, remarkably, merely
B.
considerably, merely, remarkably
C.
considerable, mere, remarkable
D.
merely, remarkably, considerably
【判断题】星级评定包括:各星级划分的基本条件,各星级饭店应逐项达标;星级饭店设备设施的位置、结构、数量、面积、功能、材质、设计、装饰等评价标准;星级饭店的服务质量、清洁卫生、维护保养等评价标准。
A.
正确
B.
错误
【简答题】The accident happened (short) ______ after the midday.
【单选题】It is morning in New York now. It is ________ in London. [ ]
A.
morning
B.
midday
C.
evening
D.
midnight
【简答题】A．Morning. B．Midday. C．Late afternoon. D．Night.
【简答题】A) toward B) with C) to D) at
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