题目

将0.5L 1mol/L FeCl3溶液加水稀释至1L ，所得溶液中氯离子的物质的量浓度是(    ) A．3mol/L   B． 2mol/L  C．1mol/L   D． 1.5mol/L   答案：D  The camera was ________ by his son and he had to have it repaired．A.ruinedB.destroyedC.injuredD.damaged