问题描述：
the earthquake in japan,measuring 9.0 on the Richter Scale,was so violent
（） cause a serious of explosions of the new nuclear reactors in several power stations.
A.to B.that C.as toD.as that
（） cause a serious of explosions of the new nuclear reactors in several power stations.
A.to B.that C.as toD.as that
问题解答：
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