单项选择题
In 1997, of the unemployed males 20 years of age or older, what percent were unemployed because they had lost their jobs
A.35%
B.50%
C.60%
D.75%
E. 90%
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单项选择题
For which of the following groups did family income have the least significance in affecting life expectancy
A.Black men at age 65
B.Black women at age 65
C.White men at age 45
D.White women at age 45
E. White women at age 65
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单项选择题
What is the surface area in square inches of a cube whose volume is 216 cubic inches
A.36
B.54
C.216
D.324
E. 1296
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