At minus 130℃, a living cell can be ______ for a thousand years.
A.sparedB.protectedC.preservedD.developed在线课程C
句意:在零下130℃,一个活细胞可以保存一千年。spare抽出(时间),省得,免去,吝惜;protect保护;preserve保护,保存;develop发展,研制。根据句意选C。
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