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2013年12月英语六级外刊阅读：挺过中风 继续活着 查看汇总： Science and technology 科学技术 Surviving strokes 挺过中风 Living on 继续活着 Why some cells survive strokes while others dont 为什么有些细胞能幸免于中风，而另一些则不能 WHEN dealing with a strokea loss of blood supply to the braintime is of the essence. 在应对由于大脑失去血液供应造成的中风时，时间是至关重要的。 If the cause is a blocked artery, blood flow can often be restored using clot-busting drugs. 如果原因是动脉阻塞，在使用溶栓药物后，血液流动通常会恢复正常。 If those drugs are swallowed too late, however, they can do more harm than good. 然而，如果这些药物吃得过晚，那么弊大于利。 In one of natures crueller ironies, the metabolic changes that take place in cells after about three hours without oxygen or glucose mean that restoring blood flow becomes damaging in itself. 自然的残酷讽刺是，细胞在约三个小时没有氧气或葡萄糖时所产生的代谢变化意味着恢复血流本身是具破坏性的。 | 
