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Water expands ______ freezing, as can be deduced from occasional breaks in water pipes in severe winters.
A．on
B．during
C．with
D．against

A.
A．on
B．during
C．with
D．against

【参考答案】

A
on在此处的意思相当于assoonas(itexpands)。如：Onhearingthenews，she......

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