问题
填空题
酸性染料比色法中，关键在于水相值的控制，当pH值过低时，水相中（），影响离子对的形成；当pH值过高时，（）呈游离状态，也影响离子对的形成。
答案
参考答案：In-浓度太低；有机碱药物
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酸性染料比色法中，关键在于水相值的控制，当pH值过低时，水相中（），影响离子对的形成；当pH值过高时，（）呈游离状态，也影响离子对的形成。
参考答案：In-浓度太低；有机碱药物
 I am Kim, I am 15 years old. I have a little sister, Kelly. She likes to go everywhere with me. It was a Saturday afternoon in summer. It was very ____and no one wanted to stay at home. I went swimming in the _____. My sister, Kelly wanted to go with me. “ Take her with you, Kim, ” said my father. “she will do what you say, I think.” Then we ____the river quickly. Many people were ___in it. I told Kelly to play on the bank*, then I jumped into the river. About an hour later, I got a ___ in my hand. Kelly was very _____. She found a bottle and put the fish in it. She did _______ but watching the fish that evening. Suddenly I heard Kelly ____in the room. I ran to her and asked,” what’s wrong ____you?” “ The fish has died,” she said “I thought it was ______. So I took it out of the bottle and put it on the chair, I only wanted it to have a rest.”
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