A.than more recent ones B.the killing efficiency for older eruptions C.has remained controversial D.Wignall's calculations as acceptable E.has been known to us all F.his ideas Older eruptions were more devastating______
A.than B.the C.has D.Wignall's E.has F.his
【参考答案】
A A 解析:more recent ones较后来的火山爆发。填入后生成的句子不仅在语法上是正确的并且跟文章第......