单项选择题




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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
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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