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题库 / OG2018V-SC-251
As a result of record low temperatures, the water pipes on the third floor froze, which caused the heads of the sprinkler system to burst, which released torrents of water into offices on the second floor.
which caused the heads of the sprinkler system to burst, which released torrents of water
which caused the heads of the sprinkler system to burst and which released torrents of water
which caused the heads of the sprinkler system to burst, torrents of water were then released
causing the heads of the sprinkler system to burst, then releasing torrents of water
causing the heads of the sprinkler system to burst and release torrents of water
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E，burst和release平行
D中的"releasing"是the water pipes froze的伴随状语，不合句意。
洒水器爆炸然后放水才合理。
D releasing 与 causing 平行歧义
差点错选D
It indicates, implausibly, that
the pipes’ freezing directly released torrents of water after it
had also caused the sprinkler heads to burst.
B选项：两个动作caused...和released...的关系是前者引起后者，而本题用and连接表示并列了；
C选项：两个句子之间仅仅用逗号隔开，不和语法；
D选项：同B选项的错误，本选项中结构默认the freezing of the water pipes是causing 和releasing的主语，而then把这两个事情分开，让两件事情有个先后顺序；
E选项：两个动词并列，表示同时发生；
2）", then ing…" is NOT right, because the action of "comma + ing" is in the same time-frame as the main verb.
因为和burst并列
then releasing 是错误的表示方法， 和 he was stuck in an car accident, then dying instantly 一样，“，ving”表示ing动词和前面的action同时发生， 不能加 then 矛盾 he was stuck in an car accident, dying instantly 正确。causing the heads of the sprinkler system to burst, releasing torrents of water 正确登录 或 注册 后可以参加讨论