以下是gre考试写作部分issue的优秀写作实例，通过这些优秀范文或是习作，考生可以借鉴里面的短语、句子或思路，给自己的写作找一些思路和灵感。

　　题目：

　　As we acquire more knowledge, things do not become more comprehensible, but more complex and more mysterious.

　　当我们获得越来越多的知识，事情并没有变的更加透彻，相反是变的更复杂更神秘。

　　正文：

　　With the development of the society, natural science and social science help people learn more about the world and the things seems to be clear, actually, under some circumstance, in-depth researches on things cause three consequences at the some time: comprehensible, complex and mysterious rather than merely understand.

　　Accumulated knowledge helps problems or theories to be expressed clearly and lucidly so that people feel easy to understand the issues. For example, Galileo, who was a famous Italian astronomer who despise the prejudices and book learning of the Aristotelians, who put his question to the nature instead of the ancient, and who drew his conclusion fearlessly. Eventually, his experiment and observation established a new theory and overthrew the old one from Aristotle. Because of his success and theories,people learn how to observe the sky with telescope and begin to understand another space, which is far from the earth. Obviously, without knowledge from Galileo’s theory, universe might also be a inspiration and even a vacancy. Take another scientist for example, Edison, who invented electric bulb by making thousand experiment and brought the society into a brilliant century. Recently, people live in a society which full of light and help them to learn what they can see and observe. With the revolution of human beings, knowledge solves various problems and creates a more comprehensible and comfortable life to the people.

　　However, those knowledge makes us to considered the reason and origin for human nature of curiosity, as a result, the world become increasingly complex. Take the same instance what have pointed above, although people learn to use telescope to observe the sky, people unsatisfied with such a "observation" and desire to touch with the outer space and understand other planets. In this case, scientists invented the spacecraft which have successfully landed on the Moon and Mars, after these experiments, people know that there are no water and few gravitation in Moon, and the Mas might have the similar condition of the earth. however, the complex problems come out, because people feel difficulty to explain the phenomena in the outer space.

　　Therore, the research on astronomy becomes complex and involved. Not only this field, but also all scientific area becomes complicate. When people understand a surface of things, they will feel anxious to learn the core of them, however, the deeper people do researches, the more complications exist.

　　Additionally, in-depth learning causes desire of researching for mystery, which follows the existence of complication. Indeed, there are many uncanny problems in process of doing research when people hope to point out the reason of complex issue. For example, the construction of pyramid has been an enigma for a long time, because people fail to imagine that the ancient people can construct such a palatial with old and traditional method. Moreover, "black hole" would be a mysterious place that astronomers desire to touch and understand because no one know a little about this untouched field. Faced with these things, human nature motivates and stimulates people to purchase the reason and the secret.

　　In sum, people learn more about things by accumulating knowledge and then establish new theory and system, and at the same time, complex and mysterious problems exist simultaneously for the desire of exploring secret and untouched field-all of these constitute a process of learning and researching

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