题目

根据实验装置图回答问题： （1） 实验室用A装置制取O2 ， 该反应的化学方程式，选用C装置收集氧气的原因是。 （2） 实验室制取CO2 ， 应选用的发生和收集装置是，检验CO2已收集满的方法是：用燃着的火柴放在，观察到火焰熄灭，则收集满。 答案：【1】2KMnO4 △__ K2MnO4+MnO2+O2↑【2】氧气不易溶于水 【1】BE【2】集气瓶口It was 12:45 pm on January 2, 2007. 50-year-old Wesley Autrey was waiting for the train at a subway station in New York. His two daughters, aged four and six, were with him.Suddenly, a sick man fell down on the platform (站台). The man, 20-year-old Cameron Hollopeter, got up, but then fell again—this time, onto the track between the two rails (道轨). A train was coming into the station. It was a frightening moment.But Mr Autrey wasn’t frightened. He looked at the man and the space that the man was in. It was about half a meter deep. And he thought, “The train is going to travel over this man. If he tries to get up, the train will kill him. But if he lies on the ground and doesn’t move, he’ll be OK.” So he got an idea.He jumped down and kept Mr Hollopeter down on the ground. The train driver saw them. He was terrified, but he couldn’t stop in time. The train traveled over the two men before it stopped.The people on the platform were surprised. When Mr Autrey heard them screaming, he shouted, “We’re OK down here, but I’ve got two daughters up there. Let them know their father is OK.”In an interview on a TV show, Mr Autrey said, “The only thing that happened to me was my blue hat got dirty.”1.Why did Mr Hollopeter fall on the platform and then the track?A.Because he was illB.Because he walked so fastC.Because he was too oldD.Because the subway station was so crowed2.Which of the following is TRUE?A.Mr Autrey was so frightened when he saw what had happenedB.Mr Autrey thought the space that the man was in was about one meter deepC.The train driver saw the two men but he couldn’t stop the train in timeD.Mr Autrey and Mr Hollopeter were both taken to a hospital3.Mr Autrey was worried about         when the train stopped.A.his two daughtersB.Mr HollopeterC.his blue hatD.the train driver4.Mr Autrey lay on top of Mr Hollopeter in order to ______.A.keep him calmB.keep him downC.keep him warmD.keep him awake5.What’s the best title for the passage?A.A Sick ManB.Save One’s LifeC.Mr Autrey and Mr HollopeterD.The Subway Hero