题目

.在给定条件下，下列加点的物质在化学反应中几乎能被完全消耗的是 A.大量NaClO溶液中通入少量CO2，密封，置于阳光下 B.向100mL18mol·L-1的浓硫酸中加入64g铜 C.标准状况下，将lg 铝片投入20mLl8mol·L-1的硫酸中 D.用50mL8mol·L-1 浓盐酸与10g 二氧化锰共热制取氯气 答案：AThe silence of the library is sometimes broken by a sudden cough or the sound of pages______. A. turning                   B. turned                    C. being turned        D. having turned