专四

单选题 The significance of the slow speed of tsunamis is that people may

A．notice them out at sea
B．find ways to stop them
C．be warned early enough
D．develop warning systems

参考答案：C进入在线模考
C。本题的出题点在文章末段。根据题干信息词slow speed of tsunamis定位到文章最后一段。文章提到，海啸的移动速度缓慢，因此人们可以及早发现并提前动员沿岸的居民离开海边到高地去，但是人们却无法阻止到来的巨浪。故C项be warned early enough为正确答案。

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