题目内容
（请给出正确答案）
[主观题]
Which of the following statements is correct according to the passage（）
A．The total prevention of tsunamis is possible
B．Rich countries are less affected by tsunamis than poor countries
C．Approaching tsunamis can possibly be picked up by sensors
D．An early warning system is effective when a tsunami is close by
提问人：网友lixin080108
发布时间：2022-01-07
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