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Quantum theory, although of tremendous scientific value, has nevertheless prompted debate among physicists. The debate arose because quantum theory addresses the peculiar properties of minute objects such as photons and electrons. While one type of experiment shows that these objects behave like particles, with well-defined trajectories through space, another demonstrates that, on the contrary, they behave waves, their peaks and troughs producing characteristic "interference" effects. However, scientists have failed to devise an experiment to demonstrate both behaviors simultaneously.

In the 1920s, two alternate interpretations of quantum theory attempted to resolve this apparently contradictory wave-particle duality. Physicist Niels Bohr argued that wave-particle properties are not contradictory, but complementary. Contrary to our intuition that an object continues to exist in some determined form even though we cannot perceive it, he concluded that the physical of a quantum object is actually undetermined before the object is observed via experiment.

Physicist Werner Heisenberg's "uncertainty principle," by contrast, postulated that we cannot precisely determine two complementary properties, such as position and momentum, of a quantum object simultaneously: if we measure an object's position with absolute certainty, then there is an infinite uncertainty in its momentum, and vice versa. He concluded that although we are limited in our ability to measure objects at the atomic and subatomic levels, their position and momentum are nonetheless defined all along.

Which of the following best describes the organization of the passage?

  • 分析A选项
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  • 分析B选项
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  • 分析C选项
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  • 分析D选项
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  • 分析E选项
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当前版本由 七剑飘一飘 更新于2015-10-09 14:11:39 感谢由 七剑飘一飘 对此题目的解答所做出的贡献。
文章结构:
点明主旨:Quantum theory的争论
1 争论的原因
2 关于争论的不同观点
3对于不同的观点的评价
4 为了解决争论,有2个不同的观点

回归结构图,关于量子理论的争论,以及为了解决此争论不同的观点。C符合
A. A thesis is introduced and then amended. 无涉及
B. Arguments are presented, weighed, and then reconciled. 无涉及
C. A problem is described and different interpretations intended to resolve the problem are 
presented. 
D. Hypotheses are analyzed, their premises are refuted, and alternatives are suggested to replace 
the hypotheses.  无涉及
E. A theory is advanced, opposing evidence is considered, and the theory is abandoned. 无涉及

题目讨论 (1条评论)

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    Byrant

    第一段最后一句However, scientists have failed to devise an experiment to demonstrate both behaviors simultaneously.
    第二段第一句In the 1920s, two alternate interpretations of quantum theory attempted to resolve this apparently contradictory wave-particle duality
    However, scientists have failed to devise an experiment to demonstrate both behaviors simultaneously.=A problem
    two alternate interpretations=different interpretations
    0 0 回复 2019-09-11 11:37:49
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