题干

a、b 两种物质的溶解度曲线如图所示.下列说法不正确的是(  )

A:15℃时,a、b 的溶解度均为20g

B:加水或升温均可使b的饱和溶液变为不饱和溶液

C:将 30℃时a的饱和溶液降温至15℃,溶质的质量分数不变

D:20℃时分别向100g 水中加入20ga和 b,升温至30℃,所得溶液均为饱和溶液

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D

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    At my heaviest I weighed 370 pounds. I had a very poor relationship with food: I used it to 1bad feelings, to make myself feel better, and to celebrate. Worried about my health, I tried many different kinds of 2 but nothing worked. I came to believe that I could do nothing about my 3.

    When I was 50, my weight problem began to affect me 4 . I didn't want to live the rest of my life with this 5 weight any more.

    That year, I6 a seminar where we were asked to create a project that would touch the world. A seminar leader shared her 7story —she had not only 125 pounds, but also raised $25,000 for homeless children.

   8 by her story, I created the As We Heal(痊愈), the World Heals 9. My goal was to lose 150 pounds in one year and raise $50,00010 a movement founded 30 years ago to end hunger. This combination of healing myself and healing the world11 me as the perfect solution.

    12I began my own personal weight program, I was filled with the fear that I would 13 the same difficulties that beat me before. While the 14 hung over my head, there were also signs that I was headed down the right 15. I sent letters to everyone I knew, telling them about my project. It worked perfectly. Donations began 16in from hundreds of people.

    Of course, I also took some practical steps to lose weight. I consulted with a physician(内科医生), I hired a fitness coach, and I began to eat small and 17meals. My fund-raising focus also gave me new motivation to exercise 18.

    A year later, I19my goal: I lost 150 pounds and raised $50,000! I feel that I've been given a second life to devote to something that is 20 and enormous.