As is known to all, a block of ice will ...

As is known to all, a block of ice will ________ if it is exposed to heat.

A．increase

B．cut

C．decrease

D．lower

C 【解析】考查词汇辨析。题意：众所周知，对一块冰加热，它就会变小。increase“增加”；cut“消减”；decrease“变小；缩小”；lower“降低”。所以选C

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