题干

现欲将粗盐提纯,再用制得的精盐配制质量分数一定的氯化钠溶液,下列说法正确的是(    )

A:过滤时玻璃棒轻轻斜靠在单层滤纸一边

B:蒸发滤液时,待蒸发皿中滤液蒸干时,即停止加热

C:配制溶液时需要经过计算、称量(量取)、溶解、装瓶等步骤

D:配制溶液时必备的仪器有托盘天平、酒精灯、量筒、烧杯、玻璃棒等

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C

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    Katie Blomquist, a lst grade teacher at Pepperhill Elementary School in North Charleston, South Carolina, learned last year that one of her students wanted a bike for his birthday. But his parents could not afford it. So, like most other people that you will find here on InspireMyKids, she decided to do something about it!

    First, she thought about how to get a bike for that child. Then, she decided to think bigger. How could she also give a bike to his brother? Or how about a bike to every child in her class? Finally, her vision got even bolder! How might she find bikes for the 650 poor kids that make up her entire school. Even though Ms. Blomquist could not afford to buy the bikes herself, she felt she now had to do something about it!

    So, she decided to start a GoFundMe campaign to raise money. Her request caught on! In less than 6 months, over 1,000 donors from around her community, and even 10 countries around the world, provided over $80,000 in donations! This was enough to buy more than 600 bikes for Pepperhill students, along with locks!

    After a big ceremony to surprise the kids, Ms. Blomquist's effort is not done. Katie Blomquist is starting a charity called “Going Places”, with a mission to bring joy to deserving children from low income families by providing them with bikes, swim lessons, summer camp chances, and more. This will enrich their growth and fuel their imaginations, supporting the most basic childhood right---a right to joy. And she has started yet another campaign for her chairty to help more schools and kids!