题目

She is a good student ____ a good player A. as soon as           B. as well as       C. as long as       D. as you like 答案：B在氯化镁溶液中，分别投入下列各物质，既有沉淀出现又有气体产生的是A.氯化钠B.金属钠C.碳酸钠D.氢氧化钠