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A . In 2005, the lowest housing cost in the United States was about $61 per month.
B . In 2005, the lowest housing cost in the United States was about 61% of the highest housing cost.
C . In 2005, even in cities with low population densities, housing costs were never below 61% of the national average.
D . In 2005, even in cities with low population densities, housing costs were likely at least 61% of the national average.
以下为新SAT OG Test04 数学 Section4 Q27真题，考察大家对于代数和函数相关知识的掌握，这类知识点是每次考察重点，也经常会出难题。考生把这部分知识融汇贯通，明确知识点之间的内在关系，是获得高分的保证。
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