题目

潮湿的氯气、新制的氯水、次氯酸钠及漂白粉的水溶液均能使有色布条褪色，原因是它们均含有A．氯气          B．次氯酸        C．次氯酸根      D．氯化氢  答案：B解析: What is _____ with your watch?A. the wrong B. wrongC. matter D. a matter