调查显示禁止吸烟法令降低了心脏病概率 (2)
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科学60秒:人类的大脑到底进化了多少?
Modern human babies are essentially learning machines. After birth, their brains grow in ___1___, allowing infants to ___2___ for future social and cognitive achievement. But it wasn’t that way ...
冬季暴风雪影响华盛顿樱桃树(2)
冬季暴风雪影响华盛顿樱桃树 Hints: Turkey Michigan Pacific Northwest George Washington Web site Mount Vernon VirginiaCherry trees are valued for their flowers but also for their wood and their fru...
与爱滋病斗争(2)
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2名韩国人质被释放(2)
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