A. tend to employ an increasing number of people B. cause problems for the white-collar unions C. employ more people than manufacturing industries do D. try to reduce their employees and to combat rising costs 参考答案:A 答案解析:[解析] 事实细节题。第四段第二句指出，发达国家中，从事服务行业的人数呈上升趋势，从事生产行业的人数呈下降趋势，因此选[A]。文中只是把趋势作对比，没有比较从业人员的绝对数量的多少，[C]属于主观臆断
