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79. The rising divorce rate in China can , at least in part , be attributed to spousal incompatibility , disparities in education levels , changing social attitudes and the increasing upward mobility of the younger generation . 中国上升的离婚率可以，至少部分可以归结为婚姻的不和谐，受教育水平的差异，变化的社会看法以及年轻一代不断增强的上进心。 80. State-owned enterprises are not only failing because of inefficient management , but also because of their inability to awitch operational modes from the former planned economy to the new market economy . 国有企业失败不仅由于低效的管理，也因为他们不能实现从以前的计划经济到新的市场经济的运作模式的转换。 81. Although we do not know the long-term consequences of separation or deprivation , we do know that they can produce acute immediate distress . 虽然我们不知道分离和丧失亲人的长期后果，但我们知道它们能立即引起剧烈的悲痛。 82. One can raedily trace the disappearance of dinosaurs to a major cataclysmic event . 人们很容易把恐龙消失的原因归结为重大的灾难性事件。 83. The raesons for poverty are many , but for the most part center on illiteracy , the lack of opportunities and in some cases pure laziness . | 
