GRE作文是中国学生比较头痛的，经常准备很多时间最后还是只得到3.5。我之所以得到6分，个人认为我的文风比较淳朴扎实，有科学性，写的思路比较广(正、反、特)，字数也比较多(I800+、A700+)。
Or consider our knowledge of the universe. Advances in telescope and space-exploration
technology seem to corroborate the theory of a continually expanding universe that began at
the very beginning of time with a "big bang." On one level this knowledge, assuming it qualifies
as such, helps us comprehend our place in the universe and our ultimate destiny. Yet on the
other hand it adds yet another chapter to the mystery about what existed before time and the
universe.
Or consider the area of atomic physics. The naked human eye perceives very little, of
course, of the complexity of matter. To our distant ancestors the physical world appeared
simple--seemingly comprehensible by means of sight and touch. Then by way of scientific
knowledge we learned that all matter is comprised of atoms, which are further comprised of
protons, neutrons, and electrons. Then we discovered an even more basic unit of matter called
the quark. And now a new so-called "string" theory posits the existence of an even more
fundamental, and universal, unit of matter. On the one hand, these discoveries have rendered
things more comprehensible, by explaining and reconciling empirical observations of how
matter behaves. The string theory also reconciles the discrepancy between the quantum and
wave theories of physics. On the other hand, each discovery has in turn revealed that matter is
more complex than previously thought. In fact, the string theory, which is theoretically sound,
calls for seven more dimensions---in addition to the three we already know about! I'm
hard-pressed to imagine anything more complex or mysterious.
In sum, the statement overlooks a paradox about knowledge acquired, at least when it
comes to understanding the physical world. When through knowledge a thing becomes more
comprehensible and explainable we realize at the same time that it is more complex and
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