单项选择题





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单项选择题
At Tyler High School, there are twice as many girls as boys on the yearbook staff. At one staff meeting, the percentage of girls attending was twice the percentage of boys. What percent of those attending the meeting were boys
A． 20
B． 25
C． 30
D． 33
E． 50
单项选择题
INOCULATION : IMMUNITY ::
A． talisman : charm
B． serum : antidote
C． exposure : weathering
D． indoctrination : disloyalty
E． invasion : fortification
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