题目

—I’m going to travel to America. Would you consider telling me about your experiences there? —______. Let’s discuss it over dinner. A. That’s all right     B. By all means       C. Go ahead        D. It just depends 答案：B 解析: 由答语可知，他非常乐意谈论他在美国的经历。by all means : of course.certainly，当然可以。故选B。下列各组离子在无色溶液中能同时大量存在的是（ ）A．K+、Al3+、OH-、SO42-B．Cu2+、Fe3+、Cl-、NO3-C．Ba2+、Na+、SO42-、NO3-D．K+、Na+、CO32-、Cl-