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语法填空thecolorlessgasiscalledoxygen,weco语法填空thecolorlessgasiscalledoxygen,wecouldnotlive.

题目详情
语法填空 the colorless gas is called oxygen,___we co
语法填空 the colorless gas is called oxygen,___we could not live.
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答案和解析
填without which
原句=The colorless gas,without which we cannot live ,is called oxygen.
句子意思 这种无色的气体被称作氧气,离开了它我们就无法生存.