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.
The passage suggests that the debate among physicists mentioned in the first sentence has arisen in part because
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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
定位第一段
A. the rapid movement of quantum objects poses an insurmountable obstacle to precise
measurement 无涉及
B. scientists have been unable to devise a single experiment that reveals both particle and wave
properties of quantum objects simultaneously 符合第一段的意思
C. the controversial nature of quantum theory has made it for scientists to agree on what evidence is acceptable 无涉及
D. division among physicists has resulted in the design of experiments that produce unintelligible experimental results 无涉及
E. research efforts have been undermined by irreconcilable contradictions between equally
compelling interpretations of quantum theory 无涉及
Correct ：B
The debate arose because quantum theory addresses the peculiar properties of minute objects such as photons and electrons. 首先提出因为能解决这个特殊性质，但文中未提到，继续往下找。However, scientists have failed to devise an experiment to demonstrate both behaviors simultaneously.即虽然能解决这个特殊性质，但是不能发明能同时显示这两个性质的试验。其实前面只是引子，后面才是因为这个技术才引发的问题。
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2019-09-11 11:43:42
定位于 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. 寻找其关键词 property, particle, wave, fail to 连起来看基本的意思 即讲其性质 P和W没办法同时等等 选项与这个意思相关即是正确 A the rapid movement of quantum objects 未提及 B保留 和上述所述一致 C evidence is acceptable 未提及 D unintelligible experimental results 未提及 Eirreconcilable contradictions 未提及
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2017-11-08 16:42:26
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