题目

在某无色溶液中缓慢地滴入NaOH溶液直至过量，产生沉淀的 质量与加入的NaOH溶液体积的关系如右图所示，由此确定，原溶 液中含有的阳离子是：  A．Mg2+、Al3+、Fe2+     B．H+、Mg2+、Al3+  C．H+、Ba2+、Al3+       D．只有Mg2+、Al3+   答案：BShe used to sleep on the Fifth Street. I could smell her before I came close. She wore dirty clothes and her mouth was nearly toothless. I seldom saw her talk with others. If she was not asleep，she talked to herself. What a poor old lady！She must be hopeless and hungry. One Thanksgiving，we had lots of food left over. I-n thought about the old lady. She might be still hungry. So I packed the food up and drove over to the Fifth Street. It was a cold night. There was hardly anyone out. But I knew she would stay at the same place and I would find her easily. There she was，squatted（蹲着）against a fence near the post office. She was dressed as she always was. I drove my car over to her，put down the window and said，“I've brought you some food. Would you like some turkey and apple pie？”However，the old woman didn't seem to be very excited about this. She looked at me and said quite clearly，"Oh，thank you very much，but someone gave me food earlier and I'm quite full now. Why don't you take it to someone else who needs it？"Her words were clear and her manners were kind. Soon her head sank into her arms again. I was the only person who didn't know what to say. An old lady who was clearly down on her luck still thought about others. Why don't more of us do that？【1】What did the old lady look like？（no more than 10 words）____________________________________________________________________________________________【2】Why did she refuse the writer's food one Thanksgiving？（no more than 12 words）____________________________________________________________________________________________【3】What did the writer think of the old lady？（no more than 5 words）__________________________________________________________________________________________【4】请将文中划线的句子翻译成汉语。____________________________________________________________________________________________【5】请给短文拟一个适当的英文题目。____________________________________________________________________________________________