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    For many years, scientists couldn't figure out how atoms and molecules on the Earth combined to make living things. Plants, fish, dinosaurs, and people are made of atoms and molecules, but they are put together in a more complicated way than the molecules in the primitive ocean. What's more, living things have energy and can reproduce, while the chemicals on the Earth 4 billion years ago were lifeless.
      After years of study, scientists figured out that living things, including human bodies, are basically made of amino acids and nucleotide bases. These are molecules with millions of hydrogen, carbon, nitrogen, and oxygen atoms. How could such complicated molecules have been formed in the primitive soup? Scientists were stumped.
      Then, in 1953, two scientists named Harold Urey and Stanley L. Miller did a very simple experiment to find out what had happened on the Primitive Earth. They set up some tubes and bottles in a closed loop, and put in some of the same gases that were present in the atmosphere 4 billion years ago: water vapor, ammonia, carbon dioxide, methane, and hydrogen.
      Then they shot an electric spark through the gases to simulate bolts of lightning on the ancient Earth, circulated the gases through some water, sent them back for more sparks, and so on. After seven days, the water that the gases had been bubbling through had turned brown. Some new chemicals were dissolved in it. When Miller and Urey analyzed the liquid, they found that it contained amino acids-the very kind of molecules found in all living things.
    61. When did scientists come to realize how the atoms and molecules on the Earth combined to make living thing?
      A. 4 billion years ago. B.1953. C. After seven days.D. Many years later.
    62. Scientists figured out that human bodies are basically made of .
    A.amino acids
    B.molecules
    C. hydrogen, carbon, nitrogen and oxygen atoms
    D. water vapor, ammonia, carbon dioxide, methane and hydrogen
    63. Harold Urey and Stanley L.Miller did their experiment in order to . 
    A. find out what had happened on the Earth 4 billion years ago
       B.simulate bolts of lightning on the ancient Earth
       C. dissolve some new chemicals
      D.analyze a liquid
    64. At the end of the last paragraph, the underlined word "it" refers to .
    A. a closed loop   B. an electric spark   C.water   D. the liquid
    65. According to the writer, living things on the Earth include .
     A. atoms and molecules                     B.chemicals 
    C. plants, fish, dinosaurs and human beings     D.the primitive soup

    本题信息:英语阅读理解难度容易 来源:未知
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人生感悟类阅读

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  • 人生感悟类阅读

人生感悟类阅读的概念

生活感悟类的文章就是指能给人心灵以启迪,使人从中受到教育的文章。这类文章的体裁可以是记叙文,如生活中一些感人故事或情感故事,有点类似心灵鸡汤一样的短文。


生活感悟类阅读解题指导:

一、文章特点:

生活感悟类的文章就是指能给人心灵以启迪,使人从中受到教育的文章。这类文章的体裁可以是记叙文,如生活中一些感人故事或情感故事,有点类似心灵鸡汤一样的短文。有时故事的结尾会有一句“点睛之笔”,点出全文的中心思想,就像《伊索寓言》里的寓言一样。还可能是夹叙夹议的哲理散文或生活随笔。散文随笔通常会阐述一种朴素易懂,耳熟能详的人生道理或宝贵品质。文章的结构和议论文类似,一般是总分总或总分结构。每段首句或尾句为主题句(论点),其它句子围绕主题展开论述(论据),论证方法多种多样,或举例,或引用名言,或正反对照等。

二、解题技巧:

针对生活感悟类文章的特点,做这类文章的完形填空时,要特别注意以下几点:
1、重点理解全文的首句。如果是记叙文,找出when,where,who,what等基本要素。如果是散文随笔,充分理解文章的中心句—全文的主题。
2、阅读全文的结尾段或结尾句,有助于理解文章所阐述或蕴含的哲理、感悟或忠告等。
3、调动自己的背景知识和情感。这类文章不会讲大道理也不会涉及到一些很专业的知识技术领域,而是谈一些小事和简单的道理,所以如果读者能和作者产生感情上的共鸣,读者会更好地把握作者的意图态度,从而提高做题的准确度。因此,考生在平时要做一个有心人,即用心去感悟生活中发生的小事,思考人生的一些基本道理,多阅读一些短小精悍的美文,多写写自己的心情故事和对生活学习的感悟。只有平时多用心,做题时才能调动自己的背景知识和情感。