题目

Deciding to get her money's worth out of the wedding dress on which she spent over $1,000, an Australian woman has been wearing her wedding dress, a year after her wedding.43-year-old Tammy Hall adopted a new lifestyle-anti-consumerism （反消费主义） lifestyle in 2016, after a trip to India opened her eyes to how much we as a society consumed. She decided not to buy any new clothes or footwear for a whole year after she returned home to Adelaide, in Southern Australia, and she made it.But last year, as her wedding day approached, she faced a dilemma. She wanted to look good on the most 如图所示甲、乙、丙三种物质的溶解度曲线，在20℃时，分别取等质量的三种物质的饱和溶液于三只烧杯中，然后向溶液分别加入等质量的相应固体物质，再将温度升高到40℃，结果甲物质全部溶解，乙物质质量增加，丙物质部分溶解，试回答下列问题：（1）依次写出甲、乙、丙三种物质的溶解度曲线的序号：______；（用a、b、c填写）（2）当三种物质的溶解度由大到小的顺序是丙、甲、乙时，温度范围是在______间．（3）40℃时，等质量甲、乙、丙三种物质的饱和溶液中含水最少的是______物质．（4）乙物质的饱和溶液中含有少量的甲物质，通过______方法可以提纯其中的乙物质．