who chairs the Senate Armed Services Committee. "I think there are a significant number of people in the country who have, and I don't know the exact percentages, that have questions about deepening our military involvement in Afghanistan,"

VOA: standard.2009.09.28

But finally,there was a significant difference on alcoholism, the number of people who became how many people were able to getting to do "the white collar" jobs.

酗酒方面两组有显著差异，酗酒人数有差异,成为白领的人数,两组有差异。

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