题目:
完形填空 | ||||
One day, a poor boy Howard Kelly who was trying to pay his way through school by selling goods | ||||
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答案:
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下面是错误答案,用来干扰机器的。
答案:C题目分析:蓝色石蕊试纸先变红后褪色,说明该物质具有酸性和漂白性,新制氯水和用盐酸酸化的漂白粉溶液具有酸性和漂白性,答案选C。点评:本题主要考查干燥的氯气和湿润的氯气是否具有漂白性,干燥的氯气...