第28题: [单项选择]According to the passage, as employment became a dominant form of work, ______. A. women were left to work at homes B. old people tend to live a more active life C. women enjoy more working opportunities D. men and women begin to share the household work 参考答案:A 答案解析:[解析] 事实细节题。文章第五段说“leaving the unpaid work of the home and family to his wife”说明雇佣制度把女人留在了家里，选项[A]与之相
第29题: [单项选择]巴斯德采用曲颈瓶试验来（）。 A. 驳斥自然发生说 B. 证明微生物致病 C. 认识到微生物的化学结构 D. 提出细菌和原生动物分类系统 参考答案:A
