题目

--- Did you get a dictionary?         --- No, I _____, but there were not any _____. A. tried; to be left         B. had tried to; leaving    C. tried to; left            D. had tried; have left 答案：C图中a、b、c分别表示KNO3、NaCl、Ca（OH）2溶解度曲线，下列说法错误的是（　　）A．T1时，KNO3和NaCl的饱和溶液溶质的质量分数相等B．T2时，A点表示KNO3的不饱和溶液，降温至T1时有晶体析出，且变为T1时KNO3的饱和溶液C．T1时，将Ca（OH）2饱和溶液升温至T2变为不饱和溶液D．温度高于T1时，KNO3溶解度大于NaCl溶解度，温度低于T1时，KNO3溶解度小于NaCl溶解度