题目

阅读短文，根据意思，判断所给句子的正误。正确的写T，错误的写F。并在答题卡上将T或F写在对应题号的方格内。  As I am now a middle school student, I have many friends, but there is one I like best. I first met him when I began to go to school. Though he looks serious, he is interesting. Often he is clever, sometimes even much fun. He knows every language in the world, all the things in history, and the words of all the great articles. Everyone who knows him loves him. To me, he is a great teacher as well as a good friend. My friend is always rea欲将下列各物质中的杂质除去，所用方法不正确的是（ ）选项物质杂质除杂试剂及操作方法A一氧化碳二氧化碳通入足量的氢氧化钠溶液B氧化钙碳酸钙加水溶解，过滤C铁粉锌粉加过量硫酸亚铁溶液，过滤D食盐固体泥沙加水溶解，过滤、蒸发A. A B. B C. C D. D