There were warnings against the 2004 tsunami but the warnings couldn’t reach the spot. Only vertical displacement of ocean flo

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问题 There were warnings against the 2004 tsunami but the warnings couldn’t reach the spot.  
Only vertical displacement of ocean floor caused by earthquakes generates tsunamis.

选项 A、Y
B、N
C、NG

答案Y

解析 题目是对原文该句的近义改写,内容相同,因此本题答案为Y。  
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