题目

After the earthquake, the poor girl was found _________ under the ruins of a church.   A. burying     B. to be buried     C. buried         D. being buried 答案:C 解析: 略下列各类物质的组成中一事实上只含两种元素的是  (   ) A.氧化物    B.酸       C.碱     D.盐
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