专四

单选题 According to the passage, which of the following is INCORRECT?

A．Tsunami has nothing to do with tides．
B．Tsunamis travel fairly slowly only in harbors．
C．Tsunami may pile up into high walls of water in harbors．
D．Seismic sea waves can be caused by submarine earthquakes．

参考答案：B进入在线模考
B。本题需根据选项一定位原文判断。文章倒数第二段提到，有一种灾难是由海浪或海啸引起的，经常被称作潮汐波浪，但是它们与潮汐无关，故排除A；文章还提到，在特定区域的海底会发生地震，这些海底地震有时会引起地震海浪，这些海浪在海上并不明显，但是当它们卷进海港时，就会上升为6到60英尺高的水墙，日本人称之为海啸，意为海港波浪，因为它们只在海港才达到相当的高度，故排除C；文章最后一段开头提到，海啸移动得相当慢，时速仅为500英里，但并未说它在海港移动得相当慢，故选B；由原文倒数第二段中These submarine earthquakes sometimes give rise to seismic sea waves可知．

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