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The day after news broke of a possible revolution in physics ——particles (粒子) moving faste

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解决时间 2021-01-03 17:51

The day after news broke of a possible revolution in physics ——particles (粒子) moving faster than light ?a scientist leading the European experiment that made the discovery calmly explained it to a standing-room- only crowd at CERN.
The physicist, Dario Auterio, did not try to explain what the results might mean for the laws of physics, let alone the broader world.After an hour of technical talk, he simply said, Therefore, we present to you today this difference, this unusualness.
But what unusualness it may be.From 2009 through 2011, the massive OPERA detector (探测器)buried in a mountain in Gran Sasso, Italy, recorded subatomic particles called neutrinos ( 中微子) arriving faster than light can move in an empty space.The neutrinos generated at CERN are hardly detectably early.If confirmed, the finding would throw more than a century of physics into disorder.
If it's correct, it's phenomenal. said Rob Plunkett, a scientist at Fermilab, the Department of Energy physics laboratory in Illinois.We'd be looking at a whole new set of rules for how the universe works.Those rules would bend, or possibly break, Albert Einstein's special theory of relativity, published in 1905.Basical at the time, the theory tied together space and time, matter and energy, and set a hard limit for the speed of light, later measured to be about 186, 000 miles per second.
No experiment in 106 years had broken that speed limit.Physicists expect strict study to follow, which OPERA and CERN scientists welcomed.
Fermilab operates a similar experiment, called MINOS, that shoots neutrinos from Illinois to an underground detector in Minnesota.In 2007, MINOS discovered a just detectable amount of faster than-light neutrinos, but the permissible difference of error was too big to mention , Plunkett said.
Fermilab scientists will reanalyze their data, which will take six to eight months.In 2013, the MINOS detector, now offline, will restart after an upgrade.It could then offer confirmation of the results.
【小题1】Why are the European scientists not sure about the results of the experiment?A.Because they are so unexpected.B.Because the scientists do not believe them.C.Because the scientists are careful and calm.D.Because they are against the present law of physics.【小题2】The underlined word phenomenal in the fourth paragraph has the closest meaning to .A.amazingB.attractiveC.embarrassingD.sensitive【小题3】The best title for the passage may be .A.Are the laws of physics in disorder?B.Particles faster than light; Revolution or mistake?C.Faster than light measurement: right or wrong?D.Is Einstein's theory still right today?【小题4】What may be discussed in the paragraphs to follow?A.Different opinions about the experiment.B.How Albert Einstein's theory developed.C.The new rules for how the universe works.D.How Fermilab scientists will reanalyze their data.D
最佳答案
(答案→)D 解析:文章讲述的是一个科学实验的结果,即粒子运动速度可以超过光速,所产生的影响。【小题1】推理判断题。根据第三段If confirmed, the finding would throw more than a century of physics into disorder和第四段的Those rules would bend, or possibly break, Albert Einstein's special theory of relativity, published in 1905可知,这个结果与现在的物理理论相违背。【小题2】猜测词义题,根据We'd be looking at a whole new set of rules可知,这个发现太神奇了,令人惊讶的。【小题3】主旨大意题,根据第一段的中心句可知,文章主要讲的是这样一个结论和他的影响。【小题4】根据最后一段Fermilab scientists will reanalyze their data可知,下文就如何再次分析他们的数据作详细的说明。
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