为了让我们更好的适应SAT考试，SAT考试官网每天都会有SAT官方每日一题，下面是澳际小编为您整理的2016年11月28日SAT题目，是阅读题，让我们一起来看一看这道题目吧。

　　Critical Reading>Select an Answer

　　Light from distant quasars—early galaxies that shinewith tremendous brightness—has given researchersa new clue to the origin of vast magnetic fieldsstudding today's galaxies: They were running strongwhen the universe was only a third of its presentage.

　　Astronomers had observed that radio emissions from quasars tend to be angled, or polarized,in such a way that powerful magnetic fields must have twisted them. The greater theirdistance from Earth, the more polarized their light. But researchers didn't know whether themagnetic fields were part of the quasar or were present in galaxies encountered by quasar lightas it made its journey to our telescopes.

　　So a team led by astronomers from the Swiss Federal Institute of Technology (ETH Zurich)scanned more than 70 of those quasars using the European Southern Observatory's VeryLarge Telescope in Chile to look for signs of galaxies hiding in front of the quasars. Specifically,they checked for a feature called the magnesium(II) absorption line, a reduction in theintensity of light of a certain wavelength, which is a commonly used indicator that gas froma star-forming galaxy has soaked up that light.

　　The researchers report that light from quasars showing the magnesium(II) line was morestrongly polarized than light from other quasars in the sample. The interpretation: that lightdid indeed pass through regular galaxies and that it likely acquired its polarization in theprocess.

　　They estimated the age of the magnetic galaxies by measuring the red shift of the absorptionline—the observed reddening of light that occurs when galaxies move rapidly apart. The typicalred shift of the inferred galaxies corresponded to an age of 5.2 billion years, study authorFrancesco Miniati says. Precision measurements of the cosmic microwave background pegtoday's universe at 13.7 billion years old.

　　Based on the passage, what can most reasonably be inferred about the relationshipbetween two magnetic galaxies and their magnesium(II) absorption lines?

　　(A) As the distance between the galaxies increases, the color of their absorption lines darkens.

　　(B) As the galaxies age, their absorption lines become more pronounced.

　　(C) As the galaxies move farther apart, their absorption lines become polarized.

　　(D) As the brightness of the galaxies decreases, the intensity of the light from theirabsorption lines also decreases.

　　澳际培训提醒各位参加准备sat考试的同学，仔细看完以上的sat考试官网题目，然后再看下面的SAT题目答案更有效哦。

　　答案：A

　　解析：

　　Choice A is the best answer. The author states that the red shift of absorption lines is the observed reddening of light that occurs when galaxies move apart from each other. This suggests that the color of the lines becomes more deeply red, or darkens, as the distance between galaxies increases.

　　以上就是澳际小编为根据SAT考试官网最新信息，为您整理的2016年11月28日SAT题目，目的是为了让我们更好的适应SAT考试，如果在备考过程中遇到任何问题，欢迎随时咨询澳际培训，为您提供最专业、最全面的解答。

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