题目

There are three bedrooms in the house, ______is Mary's. A . the smallest of which B . the smaller of which C . the smallest of them D . the smallest of all 答案：A股民小张星期五买某公司股票1000股,每股14.80元,下表为第二周星期一至星期五每日该股票涨跌情况(单位:元): (1)星期三收盘时,每股是多少元? 　　(2)本周内最高价是每股多少元?最低价是每股多少元? 　　(3)已知小张买进股票时付了成交额0.15%的手续费,卖出时付了成交额0.15%的手续费和成交额0.1%的交易税,如果小张在星期五收盘前将全部股票卖出,那么他的收益情况如何?