单项选择题

In modern society, knowledge is to us _____ water is to life.

A．like
B．as
C．what
D．that
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单项选择题
Man cannot live without food _____ than plants can grow without sunshine.
A．any more
B．more or less
C．not more
D．no more
单项选择题
It is common knowledge that cotton cloth, _____ in hot water, tends to shrink.
A．it is washed
B．when washed
C．washing
D．to be washed
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