When a material burns in the air, heat is released and new substances are______.

游客2025-03-01 22

问题 When a material burns in the air, heat is released and new substances are______.

选项 A、separated
B、ruined
C、formed
D、dissolved

答案 C

解析这是一道词汇题，考点是意思相近的动词的被动语态的辨析。

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Materialculturereferstothetouchable,material"things"—physicalobjects