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题库 / GMATAdvanced-CR-34
Mashika: We already know from polling data that some segments of the electorate provide significant support to Ms. Puerta. If those segments also provide significant support to Mr. Quintana, then no segment of the electorate that provides significant support to Mr. Quintana provides significant support to Mr. Ramirez.
Salim: But actually, as the latest polling data conclusively shows, at least one segment of the electorate does provide significant support to both Mr. Quintana and Mr. Ramirez.
Among the following statements, which is it most reasonable to infer from the assertions by Mashika and Salim?
At least one segment of the electorate provides significant support neither to Mr. Quintana nor to Mr. Ramirez.
At least one segment of the electorate provides significant support to Ms. Puerta but not to Mr. Quintana.
Each segment of the electorate provides significant support to Ms. Puerta.
Each segment of the electorate provides significant support to Mr. Quintana.
Each segment of the electorate provides significant support to Mr. Ramirez.
M说some segments支持P，然后做了个假设：if those segments (=前面some指代的所有segments)都支持Q，则没有既支持Q又支持R的。接着S否定了这个假设，也就是并不是所有支持P的都支持Q，说明至少有一个支持P的segment是不支持Q的，也就是至少有一个segment是支持P不支持Q。
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