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题目

Hot metal_as it get cooler.A. expandsB. contrastsC. contractsD. compresses

Hot metal_as it get cooler.

A. expands

B. contrasts

C. contracts

D. compresses

题目解答

答案

C. contracts

解析

金属在冷却时会收缩。这是因为当金属冷却时，其内部的原子或分子的热运动减缓，导致它们之间的距离减小，从而引起体积的减小。因此，正确答案是“contracts”。

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