单项选择题

A certain five-member committee must be assembled from a pool of five women -- A. B, C, D and E, and three men-- X, Y, and Z, what is the probability that the committee will incIude B, C, E, Y and Z （）


A.A
B.B
C.C
D.D

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单项选择题
Because her test turned out to be more difficult than she intended it to be, a teacher decided to adjust the grades by deducting only half the number of points a student missed. For example, if a student missed 10 points, she received a 95 instead of a 90. Before the grades were adjusted the class average was A. What was the average after the adjustment （） (E) A+25

A.A
B.B
C.C
D.D
单项选择题
The advertised rate for roaming charges is 0. 002 cents per second. What is that in dollars per hour
A. 7.2
B. 2
C. 0.72
D. 0.2
E. 0.072
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