题目

（1）在淀粉KI溶液中，滴加少量NaClO溶液，并加入少量硫酸，溶液立即变蓝，这是因为________________________，有关反应的离子方程式是__________________________。 （2）在上述蓝色溶液中，滴加足量Na2SO3溶液，蓝色逐渐消失，这是因为_________________________，有关反应的离子方程式是__________________________。（3）从以上实验可知，ClO-、I2、的氧化性由强到弱的顺序是___________________。英语课上,老师要求同桌同学相互修改作文。假设以下小作文为你同桌所写，请你对其进行修改。文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加,删除或修改。增加：在缺词处加一个漏词符号（^），并在此符号下面写出该加的词。删除：把多余的词用斜线（\）划掉。修改：在错的词下划一横线，并在该词下面写出修改后的词。注意：1．每处错误及其修改均仅限一词。2．只允许修改10处，多者（从第11处起）不计分。3．必须按答题要求做题，否则不给分。It's unbelievable when I heard my name calling. I was chosen to play the leading role in the play, and it was my dream. I used to being too shy to speak in a public. But my parents and teachers always encourage me to do so. Now I have changed great. In class, I am often the first one to stand up and answer questions even if I may make much mistakes. No pains, no gains. Now I am always brave enough to overcome the difficulty in her heart, and have became a lively girl. My experience shows that we should not be afraid losing face, and only in this way can we make progresses.