His power was seriously__by a succession of crises,and when he died,a bitter power struggle__
问题描述：
His power was seriously__by a succession of crises,and when he died,a bitter power struggle__
A weakened,was ensued
B eroded,ensued
C damaged,followed
D reduced,occurred为什么选B
答
首先确定最后一个空填ensue,因为ensue[in'sju:,en'su:]
v.跟着发生,继起,因而产生
eg.Observers waited for mayhem to ensue.
然后A要排除,因为ensue没有被动语态那C,D也有跟随，产生的意思呀？首先，occur没有跟随发生的意思，只有发生但是题目是强调相继发生其次follow的跟随是主观上的，而ensue是不随人意志发生的，所以这里用ensue更符合句意