题目内容：
What does the author mean when he mentions the damage caused by earth quakes?
A．It is hard to build structures strong enough to withstand serious temblor. B．Not all structures can be made to withstand the tremor of the earthquakes.
C．The damage caused by earthquakes to buildings can hardly be predicted accurately.
D．No structures would be strong enough to endure violent earthquakes.
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答案解析：