题目

将一小块钠放入下列溶液时，既能产生气体，又会出现白色沉淀的是 ( ) A . 稀盐酸 B . 氢氧化钠稀溶液 C . 硫酸铜溶液 D . 氯化镁溶液 答案：D阅读理解         It was 25th December. Marie，a 13-year-old Australian girl，was happy.It was Christmas and Marie’s mother was making a very special cake.She put four small coins(硬币)into the cake and then baked it.The four coins were for good luck. After dinner，Marie and her family ate the cake.They found three coins in the cake and put them on the table. Where was the fourth one？It was missing(找不的)，but Marie’s mother didn’t notice. After Christmas，Marie got sick. She coughed and couldn’t speak. Marie's parents took her to hospital. Doctors at the hospital looked her over and then sad，“We are sorry，but we can’t help her.”For 12 years，Marie didn’t speak. But like other common people，she grew up，she got a job，she got married. One day，when Marie was 25 years old，she got a sore throat. She began to cough. She coughed up something small and black. What was it? Marie didn't know. She took it to a hospital. A doctor at the hospital said，“This is a coin!”The doctor told Marie，“I think you can speak again.”1. When did the story begin? A. During Christmas. B. On Marie's birthday.C. Before Christmas2. How old was Marie when she became unable to speak?A. She was 12. B. She was 13. C. She was 25.3. Why did Marie go to the hospital 12 years later?A. Because she had a bad cold and began to cough.    B.Because she heard the doctor there could help her speak again.    C.Because she wanted to know what the small and black thing was.4. Where had the missing coin been?A. In the cake.    B. In Marie's throat.C. On the table.5.What can you infer(推断)from the passage ?A. Marie lived an unusual life after she got sick    B. The coins in the cake brought good luck to Marie.C.The 13-year-old girl couldn’t speak because of the coin.