题目

在高温的条件下，用CO还原金属氧化物ZnO和Fe2O3的混合粉末。 [提出问题]在高温的条件下，CO能还原ZnO和Fe2O3混合粉末吗？ （1） [进行假设]上述猜想正确，请写出其中CO充分还原Fe2O3的化学方程式为①； （2） [设计实验]教材中设计下列实验，填写实验报告： （3） [提出问题] 实验后的粉末一定是Zn和Fe吗？ [设计实验] 实验后，为证明玻璃管中的粉末是Zn和Fe，请你设计下列两个实验：[反思交流]①实验1：反应的化学方程式可能是③；②Geoffrey Payne talks for the first time about the night his wife was killed. The judge thought it was he who killed his wife. Now he wrote to a magazine from the prison (监狱) about what happened on the night of 13 October 1999.I had to stay late at the hospital that night to do an operation. I finally left at about 11 p. m. I drove home slowly because the weather was terrible—the wind was blowing and it was raining heavily, I was turning into our road when a man suddenly ran in front of my car. I almost hit him but I stopped just in time. I was fright­ened and the man looked frightened too. I got out of the car but he ran away before I could ask if he was all right. It was very strange.When I got home, the lights were on but it was very quiet. I called to my wife but there was no answer. Then I remembered that she was out at a concert.I was still very upset about what happened on the road, so I made myself a drink. Then I went upstairs to have a bath. I saw that the window in the bedroom was open. This was strange because my wife always locked the doors and windows before she went out. She was afraid of burglars. When I went to close it, I found Ellen. She was lying on the floor. There was blood everywhere. I rushed over and felt for her pulse but she was dead. I sat on the floor beside her body and was too frightened to do anything.The next thing I knew, the sky was getting light. I can't remember a thing about that night. In the morn­ing I phoned the police. They arrived about half an hour after I phoned them. But it seemed like hours. During that time I tried hard to remember anything I could about the night before. I couldn't stop thinking about the man in the road. What was he doing at that time of night in our quiet neighbourhood? Why did he look so frightened"! Why did he run away?1. Geoffrey Payne was a .A. doctor B. policemanC. judge D. taxi driver2. After he found Ellen dead, Payne .A. called the police at onceB. called out for helpC. tried to find out who killed his wifeD. sat beside his wife's body without know­ing what to do3. Which of the following is NOT TRUE?A. Payne called the police the next morning.B. Payne could remember clearly what had happened.C. The policemen arrived thirty minutes after Payne's call.D. Payne wondered what the man was doing in his neighbourhood that night,4.In this passage Payne tried to .A. say something about his familyB. show he was very sorry for his wife’s deathC. tell why his wife was killed that nightD. make people believe the man in the road probably killed his wife