One of the main difficulties in accurate earthquake forecasting is that__________.

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One of the main difficulties in accurate earthquake forecasting is that__________. 查看材料

A.earthquakes may take place in anywhere possible

B.earthquakes take place simultaneously and unexpectedly

C.most earthquakes take place at any unexpected moment

D.the occurrence of earthquakes involves too many unforeseen factors

请帮忙给出正确答案和分析,谢谢!

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