【GMAT考满分阅读RC题库】Quantum theory, although of tremendous scientific _真题_答案

PREP2012 - 阅读RC - 58

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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.

All of the following are mentioned in the passage as possible characteristics of quantum objects EXCEPT

Aa minute size
Bmomentum
Cposition in space
Dsporadic movement
Ewave-like behavior

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正确答案: D

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PriscillaWEI

A和E很好找，都在第一段。看最后一段：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 说position和momentum不可以同时存在，这就说明这两个都是possible characteristics。只有D没有说

2017-09-09 10:38:59 IP属地：江苏举报

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加拿大MPA顾玮回复 PriscillaWEI

对只是不敢确定

2017-10-06 00:02:03 IP属地：江西举报

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二进制_

第一段有个with well-defined trajectories through space，也就是说quantum objects的运动轨迹是很好测量预估的，所以排除D的sporadic movement（随意移动）

2018-10-08 10:00:31 IP属地：北京举报

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吃不饱的格雷斯

波粒二象性，一看就知道不是零星的运动

2020-11-03 21:28:02 IP属地：河北举报

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clementina

A. The debate arose because quantum theory addresses the peculiar properties of minute objects such as photons and electrons.
B. & C.……although we are limited in ……,their position and momentum are nonetheless defined all along.
E. another demonstrates that, on the contrary, they behave waves, their peaks and troughs producing characteristic “interference" effects.

2017-12-11 20:33:01 IP属地：江苏举报

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正确率： 72%

难度：

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PREP2012

GWD
PREP07 Test 1
PREP07 Test 2
PREP2012
OG16
OG17
PREP08 Test 1
PREP08 Test 2
Manhattan
Magoosh
OG18
OG18-数学分册
OG18-语文分册
OG19
OG19-语文分册
OG19-数学分册
OG20
OG20-语文分册
OG20-数学分册

SET 1

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题目来源1:PREP2012

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