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党的领导是公安决策正确性的根本保证。( )
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自有人类以来，警察普遍存在于各个历史时期。( )
企业过程最根本的作用是了解使用信息系统来支持企业的_______和机遇。
Anyone but (you)（）would have noticed the change.
[听力原文]11-15All mammals, except man and the monkey, swim naturally from birth. For man, like the monkey, it is not instructive to float. Deaths by drowning are common every where. In the United States alone, about 7,000 children under four drown each year.Everything possible is done to prevent such tragedies. One solution’ s particularly effective--teaching children to swim while they are still babies. Most large towns in Florida and California already run lessons for babies and infants. The idea has spread to Europe where, in several countries, special courses are now arranged for children from seven to twenty - four months.The first step is to eliminate the child’ s fear of the water. Next, he’s taught to float. Once he can do this naturally and without fear, the child grasps the technique and can push forward himself through the water. What is the effective solution to prevent death from drowning（）
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