题目

He was left _______ the shop while the manager was away. A. in the charge of       B. in charge of         C. under control of     D. in addition to 答案：B下列各离子组，能够在同一溶液中大量共存的是(     )          A．NH4+、K+、CO32—、OH—B．Ba2+、Na+、SO42—、NO3—C．Na+、Ag+、HCO3—、I—D．K+、NH4+、Cl—、Br—