参考答案

正确答案：B
解析：细节题。由文章第三段可知，慈善组织迅猛发展的原因包括：baby boomers with a social-entrepreneurship mind-set and added time in their lives to give back to their communities，[A]符合事实，故排除，such tragic events as Sept.11 and Hurricane Katrina，[C]符合事实，故排除，and greater numbers of wealthy individuals with the funds to launch their own nonprofits，[D]符合事实，故排除．在文章第二段中介绍非营利性慈善组织时指出，Organizations dedicated to education，disaster relief，job development，the environment and AIDS are among today's "hot causes，”表明其服务范围大多集中于教育、赈灾、就业、环保以及艾滋等热门领域，而这并非时慈善组织快速发展的原因，故[B]为答案。