TEXT A
1. A planet believed to be remarkably similar to Earth has been discovered orbiting a distant sun-like star, bolstering hopes of finding life elsewhere in the universe, US scientists said on Thursday. The planet, which is about 60 percent larger than Earth, is located 1400 light years away in the constellation Cygnus. It was discovered by astronomer using NASA's kepler space telescope and it circles a star that is similar to size and temperature to the sun, but older.
2. "In my mind, this is the closest thing we have to another planet like the Earth," astronomer Jenkins told reporters on a conference call, "It's simply awe-inspiring to consider that this planet, Kepler-452b, has spent 6 billion years in the habitable zone of its star. That's considerable time and opportunity for life exist on this planet." he said. Kepler- 452b is positioned as far from its parent star as Earth is from the sun, completing an orbit in 385 days, compared to Earth's 365-day orbit. At that distance, surface temperature would be suitable for liquid water, a condition to be believed critical for life.
3. Scientists previously have found Earth-sized planets orbiting in stars' so-called "habitable zones", but those stars are cooler and smaller than the sun, a G2 type yellow star. NASA launched the Kepler telescope in 2009 to survey a sampling of nearby stars in an attempt to learn if planets like Earth were common in the galaxy.
4. "This is great progress in finding a planet like Earth that is similar in size and temperature around non-like star," said Kepler scientist Jeff Coughlin, "With a rations 60 percent larger than the Earth, this planet has a somewhat better chance of being rocky." Jeff said, though this conclusion is based on statistic analysis and computer modeling, not direct evidence. If so, Kepler-452b could be about five times as massive as Earth and has gravity that is twice as strong as what exists on Earth surface. The planet also could have a thick atmosphere, cloudy skies and active volcanoes, Jenkin said.
5. With the discovery of Kepler-452b, the telescope has found 1030 confirmed planets include 11 other near-Earth twins, none of which circle sun-like stars. The telescope cannot see planets directly, but measures minute in light coming from target stars. Sophisticated computer programs and follow-up observations with ground based telescopes then determine if some of the light dips are caused by planets passing in front of their parent stars, relative to Kepler's line of sight. Attempts to learn if Kepler-452b has an atmosphere likely will have to wait for a new generation of more sensitive space telescope, said NASA's associate administrator John Grunsfeld.
According to paragraph 1, which of the following statements is TRUE?
本题考查的是细节理解。
【关键词】paragraph 1;statements ;TRUE
【主题句】第1段A planet believed to be remarkably similar to Earth has been discovered orbiting a distant sun-like star, bolstering hopes of finding life elsewhere in the universe, US scientists said on Thursday. The planet, which is about 60 percent larger than Earth, is located 1400 light years away in the constellation Cygnus. It was discovered by astronomer using NASA's kepler space telescope and it circles a star that is similar to size and temperature to the sun, but older.美国科学家周四表示,一颗被认为与地球非常相似的行星围绕着一颗遥远的类太阳恒星运行,增强了在宇宙其他地方发现生命的希望。这颗比地球大60%的行星位于距天鹅座1400光年的地方。它是由天文学家使用美国宇航局开普勒太空望远镜发现的,它围绕着一颗与太阳大小和温度相似但更古老的恒星旋转。
【解析】题目意为“根据第一段,下列哪项叙述是正确的?”A项意为“发现了一颗与地球非常相似的、绕太阳运行的行星。”原文是绕类太阳恒星运行,错误;B项意为“这颗行星的体积大约是地球的160%。”原文是比地球大60%,说法一致,正确;C项意为“航天飞机要花1400年才能到达这个星球。”原文是距天鹅座1400光年,错误;D项意为“这颗行星围绕着一颗与太阳大小、温度和年龄差不多的恒星旋转。”原文说这颗恒星与太阳相比,大小、温度相似,但年龄较大,错误。B项正确。
故正确答案为B。
What does the passage say about the Kepler space telescope?
本题考查的是细节理解。
【关键词】Kepler space telescope
【主题句】
1、第3段NASA launched the Kepler telescope in 2009 to survey a sampling of nearby stars in an attempt to learn if planets like Earth were common in the galaxy.美国宇航局于2009年发射开普勒望远镜,对附近恒星进行采样,试图了解像地球这样的行星在银河系中是否普遍存在。
2、第5段The telescope cannot see planets directly, but measures minute in light coming from target stars. Sophisticated computer programs and follow-up observations with ground based telescopes then determine if some of the light dips are caused by planets passing in front of their parent stars, relative to Kepler's line of sight.望远镜不能直接看到行星,但可以测量来自目标恒星的光的分钟数。复杂的计算机程序和地面望远镜进行后续观测,然后确定一些光线的下降是否是由于行星经过它们的母恒星之前,相对于开普勒的视线。
3、最后一段Attempts to learn if Kepler-452b has an atmosphere likely will have to wait for a new generation of more sensitive space telescope, said NASA's associate administrator John Grunsfeld.美国宇航局副局长约翰格兰斯菲尔德(John Grunsfeld)表示,要想知道开普勒-452b是否有大气层,可能需要等待新一代更灵敏的太空望远镜。
【解析】题目意为“关于开普勒太空望远镜,这篇文章有怎样的描述?”A项意为“望远镜每分钟都改变测量值。”根据主题句2,望远镜测量来自目标恒星的光的分钟数,错误;B项意为“计算机程序和地面观测被用来确定开普勒望远镜发现的行星是否有母恒星。”根据主题句2,计算机程序和地面观测是用来确定母恒星周围的行星的,错误;C项意为“望远镜最重要的任务是测量附近恒星的样本。”根据主题句1,主要任务是了解像地球这样的行星在银河系中是否普遍存在,错误;D项意为“该望远镜需要等待新一代来发现开普勒-452b是否有大气层。”根据主题句3,正确。
故正确答案为D。
According to paragraph 4, Kepler-452b________.
本题考查的是细节理解。
【关键词】paragraph 4;Kepler-452b
【主题句】第4段 "This is great progress in finding a planet like Earth that is similar in size and temperature around non-like star," said Kepler scientist Jeff Coughlin, "With a rations 60 percent larger than the Earth, this planet has a somewhat better chance of being rocky." Jeff said.开普勒的科学家杰夫·考夫林说:“发现一个类似地球的行星是一个巨大的进步,它在大小和温度上都与非类星相似,而且比地球大,这颗行星有更大的机会由岩石构成。”
【解析】题目意为“根据第四段,开普勒-425b ________?”A项意为“很有可能由岩石构成。”B项意为“由岩石构成的可能性很小。”C项意为“几乎不可能由岩石构成。”D项意为“由岩石构成的可能性一般。”原文的说法是有更大可能。A项正确。
故正确答案为A。
It's very possible for life to rise on Kepler-452b because of all of the following reasons EXCEPT________.
本题考查的是细节理解。
【关键词】very possible for life to rise on Kepler-452b;because;EXCEPT
【主题句】
第2段“‘It's simply awe-inspiring to consider that this planet, Kepler-452b, has spent 6 billion years in the habitable zone of its star. ’‘That's considerable time and opportunity for life exist on this planet.’ he said. Kepler- 452b is positioned as far from its parent star as Earth is from the sun, completing an orbit in 385 days, compared to Earth's 365-day orbit. At that distance, surface temperature would be suitable for liquid water, a condition to be believed critical for life.”
考虑到这颗开普勒-452b行星已经在其恒星的可居住区呆了60亿年,这简直令人敬畏。”他说:“在这颗行星上有相当长的时间和生命存在的机会。”开普勒-452b的位置与地球与太阳的距离一样远,与地球365天的轨道相比,它在385天内完成了一个轨道的运转。这个距离使表面温度对液态水来说十分适宜,而这一条件被认为是生命的关键。
【解析】题目意为“开普勒-425b上存在生命的可能性很大,主要原因除了以下哪项?”A项意为“开普勒-452b绕轨道一周需要385天。”B项意为“它的母星与太阳非常相似。”C项意为“它绕着它的母星运行了大约60亿年。”原文是在其恒星的可居住区运行60亿年,因此不一致。D项意为“它由岩石构成,有液态水。”除C项外其他都是适宜生命存在的条件。
本题为选非题,故正确答案为C。
It can be inferred from the passage that ________.
本题考查的是推理判断。
【关键词】be inferred from the passage
【主题句】
1、第2段"In my mind, this is the closest thing we have to another planet like the Earth," astronomer Jenkins told reporters on a conference call.天文学家詹金斯在电话会议上对记者说:“在我看来,这是我们能够发现的与地球最接近的东西。”
2、第3段Scientists previously have found Earth-sized planets orbiting in stars' so-called “habitable zones”, but those stars are cooler and smaller than the sun.科学家们先前已经发现了地球大小的行星,它们围绕着恒星的所谓“可居住区”运行,但这些恒星比太阳要冷,也比太阳小。
3、第4段this planet has a somewhat better chance of being rocky." Jeff said, though this conclusion is based on statistic analysis and computer modeling, not direct evidence. If so, Kepler-452b could be about five times as massive as Earth and has gravity that is twice as strong as what exists on Earth surface. 这颗行星由岩石构成的可能性更大。”虽然这个结论是基于统计分析和计算机建模,而不是直接的证据。如果是这样的话,开普勒-452b的质量可能是地球的五倍,其重力强度是地球表面的两倍。
4、第5段With the discovery of Kepler-452b, the telescope has found 1030 confirmed planets include 11 other near-Earth twins, none of which circle sun-like stars.随着开普勒-452b的发现,望远镜已经发现1030颗已确认的行星,其中包括11颗其他的近地双星,它们都不是围绕着太阳一样的恒星运行的。
【解析】题目意为“从文章中可以推断出________”A项意为“在迄今为止发现的所有星体中,开普勒-452b与地球最为相似。”根据主题句1,这是一位天文学家的个人看法,不能作为科学结论,错误;B项意为“先前发现的地球大小的行星在恒星‘可居住区’中运行,适合生命存在。”根据主题句2,那些恒星与太阳不相似,存在生命可能性不高,错误;C项意为“如果开普勒-452b由岩石构成,它的引力可能是地球表面的两倍。”根据主题句3,正确;D选项意为“现在人们已经发现了12颗类地行星围绕着类太阳恒星运行。”根据主题句4,错误。
故正确答案为C。