No matter ______ the CRH accident in Wenzhou, it had and will have much warning

题干

No matter ______ the CRH accident in Wenzhou, it had and will have much warning significance.

A．how the investigators said caused

B．what the investigators said caused

C．why the investigators said caused

D．the investigators said how caused

上一题下一题 0.64难度单项选择更新时间:2013-10-22 01:58:16

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