现有在敞口容器中放置的氢氧化钠固体，分析得知含水6.62%、碳酸钠2.38%、氢氧化钠91%．将此样品1g放入烧杯中，然后向其中加入46克溶质质量分数为3.65%的稀盐酸，过量的稀盐酸用溶质质量分数为4.43%的氢氧化钠溶液恰好中和，用去氢氧化钠的溶液20.5g．蒸干中和后的溶液，可得到固体的质量为　____ g．

用方框中所给词的适当形式填空，使短文正确、通顺。每词限用一次。

    One day, Mrs. Brown ____  to see the doctor. She said she ____ tired every time after she did the____ . The doctor ____ over Mrs. Brown for a few ____ , then the doctor said, “I’m afraid you are too fat.”“Too fat?”asked Mrs. Brown. The doctor said Mrs. Brown ____  too much food and she didn't____ much  exercise. Mrs. Brown____ the doctor what to do. The doctor said, “If you want to be ____ and keep ____  , you have to eat less food.”

“妈妈，你给了我生命，这次让我来救你……”扬州树人学校张智祺同学在得知自己的骨髓与妈妈配型成功后，毫不犹豫说出“我愿意”。张智祺在经历一个多月的捐髓后已重返课堂，正以最大的努力把落下的课业补回来。我们从张智祺身上看到的可贵品质有（    ）

①感情冲动        ②孝敬父母         ③勇担责任        ④热爱学习