1、备考2021高考语法填空02中子星有多大？第一部分 练习Neutron-star collisions teach us about the nature of the densest matter in 1、_ Universe. The properties of this matter can 2、_ (understand) in part by measuring the radii of neutron stars. Until recently, observers inferred 3、_ typical neutron-star radii ranged from 1014
2、km with large uncertainties. The present work determines the neutron-star radius 4、_ (depend) and more accurately. The improved constraints will have implications for the interpretation of future 5、_ (observe) of neutron stars and will help scientists 6、_ (well) understand the universe.Neutron stars
3、 are the remnants of supernova explosions 7、_ have extreme properties. In particular, the cores of neutron stars are made 8、_ of extremely dense nuclear matter. 9、_ two neutron stars collide, they give off gravitational waves, electromagnetic radiation, cosmic rays, and neutrinos, so-called multi-me
4、ssenger signals. Scientists observed one of these binary neutron-star collisions with several multi-messenger signals 10、_ August 2017.参考答案：1、 the2、 be understood3、 that4、 independently 5、 observations 6、 better 7、 and 8、 up 9、 When 10、 in 备考2021高考科技类时政新闻阅读题源 02How large are neutron stars?中子星有多大？Par
5、t 1 第一部分导读： 一个跨学科的研究小组已经确定了中子星半径的新的、更窄的限制。An interdisciplinary research team has identified new, narrower limits on the radii of neutron stars. 双语阅读(Nanowerk News) An interdisciplinary research team has identified new, narrower limits on the radii of neutron stars. 一个跨学科的研究小组已经确定了中子星半径的新的、更窄的限制。The
6、team included nuclear physicists, data scientists, and astronomers. 该小组包括核物理学家、数据科学家和天文学家。 Their novel approach combined two sources of information. 他们的新方法结合了两个信息来源。These sources were the first gravitational-wave and electromagnetic observations of a binary neutron-star collision and modern nuclear-
7、theory calculations of uncertainty.这些来源是第一次引力波和电磁观测的二元中子星碰撞和现代核理论计算的不确定性。The team determined the radius of a typical neutron star to be close to 11 kilometers. 小组确定一个典型中子星的半径接近11公里。 The results (Nature Astronomy,Stringent constraints on neutron-star radii from multimessenger observations and nuclear
8、 theory) suggest that neutron-star black-hole collisions can swallow neutron stars whole.研究结果（自然天文学，“多载星观测和核理论对中子星半径的严格限制”）表明，中子星黑洞碰撞可以将中子星全部吞没。An artists impression of the collision of two neutron stars.艺术家对两颗中子星碰撞的印象。 This collision causes gravitational waves, a gamma-ray burst, and a massive expl
9、osion. 这种碰撞引起引力波、伽马射线爆发和大规模爆炸。 Scientists believe the explosions are the universes main source of heavier elements such as gold. 科学家认为爆炸是宇宙中黄金等较重元素的主要来源。 (图片：ESO/华威大学/马克加利克)Neutron-star collisions teach us about the nature of the densest matter in the Universe. 中子星碰撞告诉我们宇宙中最致密物质的本质。The properties of
10、 this matter can be understood in part by measuring the radii of neutron stars. 这一物质的性质可以通过测量中子星的半径来部分理解。Until recently, observers inferred that typical neutron-star radii ranged from 1014 km with large uncertainties. 直到最近，观察人员推断，典型的中子星半径在10-14公里之间，具有很大的不确定性。 The present work determines the neutron-
11、star radius independently and more accurately.目前的工作独立地、更为准确地确定了中子星半径。The improved constraints will have implications for the interpretation of future observations of neutron stars and will help scientists better understand the universe.改进的约束将对未来中子星观测的解释产生影响，并将帮助科学家更好地理解宇宙。Neutron stars are the remna
12、nts of supernova explosions and have extreme properties.中子星是超新星爆炸的残余，具有极端的性质。 In particular, the cores of neutron stars are made up of extremely dense nuclear matter. 特别是，中子星的核心是由极其致密的核物质组成的。When two neutron stars collide, they give off gravitational waves, electromagnetic radiation, cosmic rays, an
13、d neutrinos, so-called multi-messenger signals. 当两颗中子星碰撞时，它们会发出引力波、电磁辐射、宇宙射线和中微子，即所谓的多信使信号。 Scientists observed one of these binary neutron-star collisions with several multi-messenger signals in August 2017.科学家们在2017年8月观察到其中一次与几个多信使信号的二元中子星碰撞。Using a new approach, a research team combined observati
14、ons with state-of-the-art nuclear theory and used supercomputers to calculate the properties of neutron star matter.利用一种新的方法，一个研究小组将观测与最先进的核理论相结合，并使用超级计算机计算中子星物质的性质。 Finally, using Bayesian statistical tools, the team combined these calculations with the multi-messenger observations to constrain the
15、 radius of the neutron stars.最后，利用贝叶斯统计工具，小组将这些计算与多信使观测相结合，约束中子星的半径。InterdisciplinaryAdj 跨学科的；学科间的Identify Vt & vi 确认，认同radii N 半径 （radius的复数）neutron N 中子data N 数据gravitational-wave引力波ElectromagneticAdj 电磁的binary Adj 二进制的、二元的collision N 碰撞、冲突DetermineV 决定、判定typical Adj 典型的swallow Vt & vi 忍受、吞咽、吞下gamma-ray伽马射线PropertyN 性质、性能、财产ImplicationN 含义、暗示、牵连、影响Remnantn剩余、残余supernova N 超新星CollideVt & vi 冲突、碰撞cosmic Adj 宇宙的NeutrinoN 中微子state-of-the-art最先进的原文地址：本文节选自：发布时间：2020.12.30
