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使用全民所有的水域、滩涂从事养殖生产，无正当理由使水域、滩涂荒芜满1年的，由发放养殖许可证的机关责令限期开发利用；逾期未开发利用的，吊销养殖证，可以并处1万元以下罚款。

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参考答案：对

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隋炀帝杨广的母亲、唐高祖李渊的母亲，都出自的民族是（）
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[听力原文]11-15

(Q11)All mammals, except man and the monkey, swim naturally from birth. For mall, like the monkey, it is not instinctive to float. Deaths by drowning are common everywhere. (Q12)In the United States alone, about 7,000 children under four drown each year. Everything possible is done to prevent such tragedies. (Q13)One solution that is particularly effective is to teach children to swim while they are still babies. Most large towns in Florida and California already run lessons for babies and infants. (Q14)The idea has spread to Europe where, in several countries, special courses are now arranged for children from seven to twenty-four months. (Q15)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
To teach the babies to（）.
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