小站教育
   首页
学生选择在小站备考:30天 522883名,今日申请466人    备考咨询 >>

2015最新GRE阅读每日一练(12月2日)

名师心血之作,考生必备最完美阅读资料,让GRE阅读更加完美,打造你的完美GRE分数,走过路过不要错过,命运掌握在自己手中,GRE掌握在自己手中,每日练一练,分数节节高,你值得拥有,且看且珍惜!GRE必胜!

每日一练

Quantum mechanics is a highly successful’ theory: it supplies methods for accurately calculating the results of diverse experiments, especially with minute particles. The predictions of quantum mechanics, however, give only the probability of an event, not a deterministic statement of whether or not the event will occur. Because of this probabilism, Einstein remained strongly dissatisfied with the theory throughout his life, though he did not maintain that quantum mechanics is wrong. Rather, he held that it is incomplete: in quantum mechanics the motion of a particle must be described in terms of probabilities, he argued, only because some parameters that determine the motion have not been specified. If these hypothetical “hidden parameters” were known, a fully deterministic trajectory could be defined. Significantly, this hidden- parameter quantum theory leads to experimental predictions different from those of traditional quantum mechanics. Einstein’s ideas have been tested by experiments performed since his death, and as most of these experiments support traditional quantum mechanics, Einstein’s approach is almost certainly erroneous.

1. It can be inferred from the passage that the author's conclusion that Einstein's approach is “erroneous” might have to be modified because

A It is theoretically possible to generate plausible theories with hidden parameters within them

B Some experimental tests of Einstein's theory do not disconfirm the hidden-parameter theory of quantum mechanics

C it is possible for a theory to have hidden parameters and yet be probabilistic

D Traditional quantum mechanics has not yet been used to analyze all of the phenomena towhich it could be applied

E There are too many possible hidden parameters to develop meaningful tests of hidden-parameter theories

2. According to the passage, Einstein posed objections to the

A existence of hidden parameters in quantum theory

B probabilistic nature of quantum mechanics

C idea that quantum mechanics is incomplete

D results of experiments testing quantum theory

E importance .accorded quantum mechanics in physics

3. The passage suggests that which of the following would have resulted if the experiments mentioned: had not supported the predictions of traditional quantum mechanics?

A Einstein, had he been alive, would have revised his approach to quantum mechanics.

B Hidden-parameter .theories would have been considered inaccurate descriptions of real-world phenomena.

C A deterministic description of the motion of a particle might still be considered possible.

D Quantum mechanics would have ceased to attract the attention of physicists.

E Einstein, had he been alive, would have abandoned attempts to specify the hidden parameters that describe motion.

正确答案

B B C

认真看完题目的考生,请允许小编为你狠狠鞠上一躬,征服美利坚不是梦啊!希望每位考生在考前都能做好充分的准备,得到自己理想的分数!

2015年最新GRE阅读每日一练(12月1日) http://gre.zhan.com/tifen/38639.html

2015年最新GRE阅读每日一练(11月30日) http://gre.zhan.com/tifen/38490.html

2015最新GRE阅读每日一练(12月10日)
2015最新GRE阅读每日一练(12月7日)
2015最新GRE阅读每日一练(12月4日)
2015最新GRE阅读每日一练(12月3日)
1