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【简答题】
已知离散型随机变量X的概率分布列表如表5-14： 表5-14 X 1 2 3 P frac{1}{4} frac{1}{2} frac{1}{4} 则概率P{X＜3}=______．
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举一反三
【单选题】he changed a clock so that he could _____music instead of a alarm.
A.
hear of
B.
wake to
C.
wake up to
D.
hear
【单选题】He changed into women's clothes ______ he wouldn't be recognized.
A.
so that
B.
for fear that
C.
in case
D.
as if
【单选题】His ______ changed very quickly; one moment he was cheerful, and the next he's complaining about everything.
A.
temper
B.
mood
C.
sense
D.
feeling
【单选题】Choose the best to explain the underlined in the following sentence: Tastes like it's right off the grill .
A.
it is hot and fresh, and tastes as it is just taken off the grill
B.
it is the right thing to roast on the grill
C.
it matches the food roasting on the grill
D.
it is not the right food to roast on the grill.
【单选题】He changed a clock so that he could ____music instead of an alarm.
A.
hear of
B.
wake to
C.
wake up to
D.
hear from
【单选题】He changed a clock so that he could ____music instead of an alarm.
A.
hear of
B.
wake to
C.
wake up to
D.
hear about
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