题目

50 mL 0.6 mol·L－1氢氧化钠溶液，含氢氧化钠的物质的量为 ( )A. 0.03 mol B. 0.04 mol C. 0.05 mol D. 0.06 mol 答案：【答案】A【解析】根据n＝cV可知氢氧化钠的物质的量＝0.05 L×0.6 mol·L－1＝0.03 mol。答案选A。She got stuck in a terrible traffic jam on the highway to Shanghai，or she   dinner with her family now．A．will be havingB．would be havingC．is havingD．was having