阅读理解-第四十九篇 美国科学家确认火星上有水

第四十九篇第四十九篇 U S Scientists Confirm Water on Mars NASA scientists said that Mars was covered once by vast lakes flowing rivers and a variety of other wet environments that had the potential 有可能有可能 to support life Laboratory tests aboard NASA s Phoenix Mars Lander have identified identify 识别识别 water in a soil sample The lander s robotic arm delivered 传递 the sample Wednesday to an instrument 仪器仪器 that identifies vapors 水蒸气 produced by the heating of samples We have water said William Boynton of the University of Arizona lead scientist for the Thermal and Evolved Gas Analyzer or TEGA this is the frrst time Martian 火星的火星的 water has been touched and tasted The robotic arm is a critical part of the Phoenix Mars mission It is needed to trench 挖掘挖掘 into the icy layers of northem polar Mars and deliver samples to instruments that will analyze what Mars is made of what its water is like and whether it is or has ever been a possible habitat 栖息地栖息地 for life The soil sample came from a trench approximately 2 inches deep When the robotic arm frrst reached that depth it hit a hard layer of frozen soil Two attempts to deliver samples of icy soil on days when fresh material was exposed were foiled when the samples became stuck inside the scoop Most of the material in Wednesday s sample had been exposed to the air for two days letting some of the water in the sample vaporize away and making the soil easier to handle Mars is giving us some surprises said Phoenix principal investigator Peter Smith of the University of Arizona We re excited 兴奋 because surprises are where discoveries come from One surprise is how the soil is behaving The ice rich layers stick to the scoop when poised in the sun above the deck different from what we expected 期望 from all the Mars simulation 模拟模拟 testing we ve done so far Since landing on May 25 Phoenix has been studying soil with a chemistry lab TEGA a microscope a conductivity probe 探测仪 and cameras The science team is trying to determine whether the water ice ever thaws 解冻 enough to be available 可用的 for biology and if carbon containing chemicals and other raw materials for life are present The mission is examining the sky as well as the ground A Canadian instrument is using a laser 激光激光 beam 梁 束 to study dust 灰尘 and clouds overhead It s a 30 watt light bulb 灯泡灯泡 giving us a laser show on Mars said Victoria Hipkin of the Canadian Space Agency A full circle color panoramna of Phoenix s surroundings also has been completed by the spacecraft 宇宙飞船宇宙飞船 The details and patterns 图案 we see in the ground show an ice dominated terrain 地形地形 as far as the eye can see said Mark Lenunon of Texas A M University lead scientist for Phoenix s Surface Stereo Image camera They help us plan measurements we re making within reach of the robotic arm and interpret 解释解释 those measurements on a wider scale 练习 l What was discovered by NASA s Phoenix Mars Lander on Mars A Vast lakes B Flowing rivers C Water in a soil sample D Living things 2 Why did the first two attempts 尝试尝试 to deliver 传递传递 samples fail AThe sample vaporized 蒸发蒸发 away B Fresh material was exposed 暴露 to the air C The samples got stuck 粘贴粘贴 stick inside the scoop 铲 勺铲 勺 DThe robotic arm hit a hard rock 3 Which one of the following statements is NOT meant by the writer A Scientists have been trying to break the ice rich layers of soil on Mars B Scientists have been surprised by how the soil on Mars behaves 表现 C Scientists have been tring to find out if there is life supporting material on Mars D Scientists have beern trying to know if water ice will melt 4 Where are the scientists involved in the research from A They are from America B They are from Canada C They are from both America and Canada D They are from neither America nor Canada 5 Which of the following do you think is the best description of Phoenix s Surface Stereo Imager camera according to your understanding of the passage A It imitates 模仿模仿 human vision 视觉视觉 and is able to capture three dimensional 三维三维 images B It imitates human voice and is able to record slight sounds while taking photos C It takes clear photos that show every detail of the object D It is this particular type of camera that can take wide angle pictures 第四十九篇美国科学家确认火星上有水第四十九篇美国科学家确认火星上有水 美国国家航空航天局的科学家们称火星曾被巨大的湖泊 流动的河流以及 其他潮湿的自然环境所覆盖 而这些都使其有了维持生命的可能 在美国国家航空航天局的凤凰号火星登陆器的实验室所做的实验中 已经 在一份土壤样本中鉴别出了水 登陆器的机器臂在星期三的时候把样本传送给 了一个仪器 此仪器可以鉴别出通过样本加热而产生的水蒸气 我们找到了水 热力与先进气体分析仪 也称 TEGA 的主要科学家 亚利桑那大学的威廉 博尔顿说道 这是我们第一次接触和品尝到火星上的水 登陆器的机器手臂是 凤凰 火星计划重要的组成部分 它需要破开火星 北极的冰冻地表 深入到土壤中伸出铲取样本 并将样本传送给仪器 使其可 以分析火星的构成 火星上的水的形态和火星是否适合或曾经适合人类居住 土壤标本来自于一个大概 2 寸深的沟渠 当机器臂第一次达到这个沟的时 候 它触到了一层硬的冻土 当新鲜的冻土暴露在空气中的时候 机器臂曾经 两次尝试对冻土样本进行传送 但样本同铲斗粘在了一起 使这两次尝试都以 失败告终 星期三所采集的大部分样本已经暴露在空气两天 这使样本中的一 些水分得以蒸发 从而使土壤更易处理 火星正在给我们一些惊喜 凤凰 计划的主要调查员 亚利桑那大学 的彼得 史密斯说道 我们很激动是因为发现源于惊喜 其中一个惊喜就是土 壤的表现 当富冰层被悬挂于甲板上方的太阳底下的时候 它会和铲斗帖在一 起 这是我们从未预期到的 也不同于我们迄今为止所做过的任何火星模拟实 验 自 5 月 25 日登陆以来 凤凰号就利用一个化学实验室 热力与先进气体分 析仪 一个显微镜 一根传导性探针和相机来研究火星土壤 这支科学团队尝 试确定火星上的水冰是否曾经大量融化 从而能支持生物存在 同时 它还将 寻找火星土中是否有以碳为基础的有机化合物 这些化合物是形成生命的 原 材料 这次任务同时对天空和地表进行研究 加拿大制造的仪器所发射的激光可 以帮助研究头上方的尘埃和云层 这是一个 30 瓦的灯泡 它在火星上给了我们一场激光秀 加拿大航天 局的维多利亚 西普金说道 航天器还成功采集了凤凰号着陆的周围地区的彩色全景图 我们获得的地表图案显示 火星基本上是一片以冰为主的地区 凤凰号 负责地表立体成像首席科学家 德州 A M 大学的马克 莱蒙说 立体成像 技术可以帮助我们在机器臂所及范围之内进行测量 同时帮助我们在更大的规 模上解释这些测量结果 第四十九篇第四十九篇 U S Scientists Confirm Water on Mars NASA scientists said that Mars was covered once by vast lakes flowing rivers and a variety of other wet environments that had the potential to support life Laboratory tests aboard NASA s Phoenix Mars Lander have identified water in a soil sample The lander s robotic arm delivered the sample Wednesday to an instrument that identifies vapors produced by the heating of samples We have water said William Boynton of the University of Arizona lead scientist for the Thermal and Evolved Gas Analyzer or TEGA this is the first time Martian water has been touched and tasted The robotic arm is a critical part of the Phoenix Mars mission It is needed to trench into the icy layers of northern polar Mars and deliver samples to instruments that will analyze what Mars is made of what its water is like and whether it is or has ever been a possible habitat for life The soil sample came from a trench approximately 2 inches deep When the robotic arm first reached that depth it hit a hard layer of frozen soil Two attempts to deliver samples of icy soil on days when fresh material was exposed were foiled when the samples became stuck inside the scoop Most of the material in Wednesday s sample had been exposed to the air for two days letting some of the water in the sample vaporize away and making the soil easier to handle Mars is giving us some surprises said Phoenix principal investigator Peter Smith of the University of Arizona We re excited because surprises are where discoveries come from One surprise is how the soil is behaving The ice rich layers stick to the scoop when poised in the sun above the deck different from what we expected from all the Mars simulation testing we ve done so far Since landing on May 25 Phoenix has been studying soil with a chemistry lab TEGA a microscope a conductivity probe and cameras The science team is trying to determine whether the water ice ever thaws enough to be available for biology and if carbon containing chemicals and other raw materials for life are present The mission is examining the sky as well as the ground A Canadian instrument is using a laser beam to study dust and clouds overhead It s a 30 watt light bulb giving us a laser show on Mars said Victoria Hipkin of the Canadian Space Agency A full circle color panoramna of Phoenix s surroundings also has been completed by the spacecraft The details and patterns we see in the ground show an ice dominated terrain as far as the eye can see said Mark Lenunon of Texas A M University lead scientist for Phoenix s Surface Stereo Image camera They help us plan measurements we re making within reach of the robotic arm and interpret those measurements on a wider scale 练习 l What was discovered by NASA s Phoenix Mars Lander on Mars A Vast lakes B Flowing rivers C Water in a soil sample D Living things 2 Why did the first two attempts 尝试尝试 to deliver 传递传递 samples fail AThe sample vaporized away B Fresh material was exposed to the air C The samples got stuck inside the scoop DThe robotic arm hit a hard rock 3 Which one of the following statements is NOT meant