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乙醇是生活中常接触到的一种有机化合物,请回答下列问题
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同类题1

阅读材料,回答下列问题。

材料一:1881年11月17日,俾斯麦通过德国皇帝在帝国议会发表了一篇有着深远影响的演说。他郑重地向帝国议会宣称:“社会弊病的医治,一定不能仅仅依靠对社会民主党过火行为的镇压,而且同时要积极促进工人阶级的福利。”就是在这篇演说里,宣布了实行三种保险的计划。这一计划经过议会长时间的辩论,陆续在议会通过。由于德国这三个保险立法实施得最早,它们在其后的30年里,成了其他欧洲国家调查、研究、借鉴和学习的“典范”。这几个立法经过以后一些局部性的修改,一直沿用至今。

——黄素庵:《西欧“福利国家”面面观》

材料二:1933年6月16日罗斯福政府颁布《全国工业复兴法》,同时成立“国家工业复兴局”负责实施该法令。该法令确定各企业的生产规模、价格水平、市场分配、工资水平和工作日时数,以避免盲目竞争导致生产过剩。1935年8月国会通过《社会保险法》,改变以往由民间团体自助自救或由慈善团体提供救助的传统,开始实施“福利主义”试验。该法包括建立养老金制度、失业保险制度和对残废及无谋生能力者提供救济三个部分,规定年满65岁的退休工人,每月可获得10—85美元的养老金,所需资金一半由在职工人和雇主以保险费的形式交纳,另一半则由联邦政府拨付。

——摘编自王斯德:《现代文明的发展与选择:20世纪的世界史》

同类题4

    Happiness is important for everyone. Most people want to be happy but few know how to find happiness. Money and success don't bring lasting happiness. Happiness depends on ourselves. In other words, we make our own happiness.
    Some people believe that if they are wealthy, they will be able to do anything they want, which means happiness. On the other hand, some people believe that holding a high position in the government is happiness. In this way, you have not only money, but also many other things which can't be bought by money. However, other people believe that having lots of money is not happiness, nor is holding a high position in the government. These people value(重视) their beliefs, or their intelligence, or their health. They think these can make them happy.
    Here are a few ways to help you be happier.
    The first secret of happiness is to enjoy the simple things in life. Too often, we spend so much time thinking about the future, for example, getting into college or getting a good job, that we don't enjoy the present. You should enjoy life's simple pleasures, such as reading a good book, listening to your favorite music, or spending time with close friends. People who have close friends usually enjoy happier and healthier lives.
    The second secret of happiness is to be active. Many people go dancing or play sports. People can forget about their problems and only think about the activities.
    Finally, many people find happiness in helping others. According to studies, people feel good when they volunteer their time to do many meaningful things for other people. If you want to feel happier, do something nice for someone. You can help a friend with his or her studies, go shopping to get food for an old neighbor, or simply help around the house.
    Now maybe you know how to find happiness!