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这张幻灯的目的显示恐怖袭击的概率。事实 上其他危害健康的因素更值得担忧
 
如果要显示当地死亡原因,请访问世界卫生组织网站。
 
Resident Population Estimates of the United States by Age and Sex: April 1, 1990 to July 1, 1999, with Short-Term Projection to November 1, 2000.

eire.census.gov/popest/archives/national/nation2/intfile2-1.txt

www.cnn.com/2002/US/05/30/rec.wtc.remains/index.html