题目

初步学会运用简单的装置和方法制取某些气体,是初中生化学实验技能应达到的要求。 (1) 某学习小组将实验室制取常见气体的相关知识归纳如下。气体制取方法(或原理)发生装置收集装置 O2方法1:加热均可选择A装置(可根据需要添加棉花)均可选择装置(填代号) 方法2:加热氯酸钾和二氧化锰的混合物 方法3:利用过氧化氢溶液均可选择装置(填代号) CO2反应原理:化学方程式为 (2) 该小组同学将制取的O2和CO2(各一瓶)混淆了What makes a house a home? Not size, of course.I've been in some of the grandest houses in America, and it's readily apparent no one lives there.Earlier this year, I had dinner in a mud hut in Ethiopia, where we sat on chairs next to the hostess' bed -- a home that had more warmth than any house I've been in since. Now John Edwards is exploring what makes a house a home in his just-released Home: The Blueprints of Our Lives.There Edwards writes, " This is a book about homes, the values they rest on, the dreams they are filled with, and the people they have shaped.The houses and circumstances are different, but much of what you find inside will be familiar."      Whether you're sitting in an airport right now, waiting to fly to your childhood home for Thanksgiving, or in your own home waiting for the relatives to arrive, you know what he's talking about. We've lived in our townhouse for 21 years.The loose windows that make noise in the wind.The fireplace so shallow it holds only one log.The kitchen window that offers a view of the world passing by.It's where friends sit on the kitchen counter drinking wine while dinner is being fixed.I lived there for only 18, but it will always be my true home.Even the lamp in the west living room window, which I could see far down the road when driving home late at night, still shines. While all this talk about childhood memories can be warm and comforting, home is whom you're with, not where you are.As Edwards writes, "Home is family.Home is safety.Home is faith." Happy homecoming. 1.What would be the best title for the text? A.Home Means Everything B.What's Inside Makes Us Feel at Home C.Home: The Blueprints of Our Lives D.The Importance of the Home 2.The purpose of the second paragraph is to __ A.mean the author likes living in grandest houses B.prove the author got along well with the hostess C.mean the feeling of home isn't related to the size D.show the author's different feelings about houses 3.About the book Home: The Blueprints of Our Lives, we know that __ A.it was the description of Edwards' houses B.it is mainly about houses C.it helps us understand the concept of home D.it was written by the author of the text 4.What did the author mainly mean when he mentioned the loose windows and the shallow fireplace ? A.His house was too old to live in. B.He missed the feelings of home. C.He hated living there. D.He missed his old friends too much. 5.It can be inferred according to the text that __ A.the author's family were very rich B.every happy home is the same C.the author has been living a hard life D.the author and Edwards hold similar ideas
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