单项选择题



In 1995, approximately how many million people were on the Zone Diet

A．12
B．16
C．23
D．27
E． 35
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单项选择题
If x is an integer, then the units digit of x squared cannot be
(A) 0
(B) 1
(C) 2
(D) 5
(E) 6
单项选择题
Which is both the mean and the median of 5 consecutive integers the least of which is x
(A) x+4
(B) x+3
(C) x+2
(D)

(E)

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