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Democritus was fascinated by the question of what principle underlay the material universe and developed a solution that revealed the brilliance of his thought. Every material thing, Democritus believed, is made up of a finite number of discrete particles, or atoms, as he called them, whose joining together and subsequent separation account for the coming to be of things and for their passing away. The atoms themselves, he said, are infinite in number and eternal. They move, according to a necessary motion, in the void, which we would call space.
Most of the main tenets of the atomism of Democritus were astonishingly modern. First, the atoms were invisibly small. They were all of the same stuff, or nature, but they came in a multitude of different shapes and sizes. Though impermeable (Democritus did not know that atoms could be split), they acted upon one another, aggregating and clinging to one another so as to produce the great variety of bodies that we see. The space outside the atoms was empty, a concept that most of Democritus’ contemporaries could not accept.
Second, the atoms were in perpetual motion, in every direction, throughout empty space. There is no above or below, before or behind, in empty space, said Democritus. In modern terms, empty space did not vary according to direction. This was an extremely sophisticated notion.
Third, the continual motion of the atoms was inherent. They possessed what would call inertial mass. The notion that the atoms kept on moving without being pushed, besides being another remarkable intellectual concept, was not acceptable to Aristotle and others. Only the celestial bodies, Aristotle thought, kept on moving of any by themselves, because they were divine. The general refusal by Aristotle and his influential followers to accept the law of inertia stood as an obstacle to the development of physics for two thousand years.
Fourth, weight or gravity was not a property of atoms or indeed of aggregates thereof. Here Democritus was as wrong as wrong could be.
Whether Democritus was right or wrong about a fifth point is not definitely decided to this day. He held that the soul is breath and because breath is material, and therefore made up of atoms, so must the soul be. He maintained that, because the soul is a physical thing, it must be determined by physical laws; it cannot be free. Even the hardy thinkers who claim to accept this theory do not act as if they do. They may deny the innate freedom of others, but they act as if they believe in their own.
The tension built up by this antinomy has proved to be fruitful over the centuries. However, the notion that the soul was material proved so unacceptable to both the Aristotelians and the Christians that for nearly two millennia the atomic hypothesis languished.
26. According to Democritus, empty space ______.
27. The author discusses the beliefs of Aristotle and his followers (in Paragraph 4) in order to ______.
28. It can be inferred from Democritus’ inclusion of the soul in his theories of the material universe (in Paragraph 6) that ______.
29. Democritus would most likely believe that which of the following would explain the life cycle of a flower?
30. Which is most analogous to a “hardy thinkers” (in Paragraph 6) view of the soul?

问题1选项
A.does not exist with regard to atoms
B.is directionless with regard to the movement of atoms
C.is an erroneous notion concerning atoms
D.possesses inertial mass
问题2选项
A.support the validity of Democritus’ theories
B.note that influential individuals delayed the acceptance of scientific truth
C.highlight the accuracy of certain parts of Democritus’ theory
D.add an element of philosophy into an otherwise scientific discussion
问题3选项
A.philosophy, religion, and science were not always thought of as separate fields
B.scientists are often unsuccessful in making philosophical theories
C.his line of thinking was essentially unsound
D.he was attempting his thinking with that of Aristotle
问题4选项
A.A unique type of matter is drawn to a point in the void and takes root.
B.The constant motion of atoms produces the illusion of a flower.
C.The same material that composes the soul also breathes life into plants.
D.Atoms come together as the flower grows and disperse as it dies.
问题5选项
A.A politician’s practice of using public transportation because that is how everyone in his city travels.
B.A doctor’s recommendation that his patient quit smoking to improve the patient s health while the doctor smokes a pack a day.
C.A mother taking her daughter to ballet practice every day because the mother never had that opportunity as a child.
D.A museum curator deciding not to run an exhibition because he believes the public will not enjoy it.
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