______ of the US population lives in poverty or is low-income, a

______ of the US population lives in poverty or is low-income, according to US census data.
A、Half
B、A third
C、A quarter
D、A fifth
【正确答案】：A
【题目解析】：Half of the US population lives in poverty or is low-income, according to US census data. 参见教材P238。