题目

The book was received so eagerly that it         on the first day.      A. sold up       B. was sold up      C. was sold out          D. sold out 答案：A下列各组物质中，前者是混合物，后者是盐的是 。A.盐酸、烧碱B.澄清石灰水、纯碱C.石灰石、盐酸D.食盐、硫黄