The earthquake in Japan measuring 9.0 on the Richter Scale was so violent cause a serie

问题补充：

The earthquake in Japan, measuring 9.0 on the Richter Scale, was so violent cause a series of explosions of the nuclear reactors in several power stations.

A. to

B. that

C. as to

D. as that

答案：

A. to

B. that

(答案→)C. as to

D. as that

解析：考查固定结构。地震如此猛烈以至于引起了核爆炸。用“如此。。。以至于”结构，且 cause a series of explosions of the nuclear reactors in several power stations.不是句子，所以选C。