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4、Metal _____ when cooled and expands when heated.

来源：百度知道编辑：UC知道时间：2024/06/26 04:41:47

A. decreases
B. reduces
C. condenses
D. contracts

contracts是缩小
分析一下几个词的意思：decreases和reduces都是减少之意，不合适，condenses是浓缩之意，也不合适，只有contract有收缩之意，所以答案是D
这句话是说：金属会热胀冷缩

d

B

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