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  3. PASSAGE THREE [br] What is the word used to refer to the residue of "calcium car

PASSAGE THREE [br] What is the word used to refer to the residue of "calcium car

游客2023-10-28  33
问题 PASSAGE THREE [br] What is the word used to refer to the residue of "calcium carbonate, silica, iron oxide and alumina" that partially melted in a special kiln?
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答案 Clinker．
解析 原文第一段第三句提到将几种原料进行高温熔合，下一句为：“The result，clinker，is mixed with gypsum and ground to make cement，a basic ingredient of concrete．”，即熔合后得到的物质为clinker，故答案为“Clinker．”。
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