网站首页 > 试题中心 > 模拟试题 > 职称英语 > 理工类 > 职称英语理工类考试辅导:补全对话U.S. Scientists

职称英语理工类考试辅导:补全对话U.S. Scientists

2012-12-20  来自于:课评集

  理工类考试辅导:补全对话U.S. Scientists

  NASA1 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 NASAs Phoenix Mars Lander2 have identified water in a soil sample; the landers 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 Analyzer3, 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 Wednesdays 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. "Were 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 weve 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.

  "Its a 30-watt light bulb giving us a laser show on Mars," said Victoria Hipkin of the Canadian Space Agency.

  A full-circle, color panorama of Phoenixs 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 Lemmon of Texas A & M University, lead scientist for Phoenixs Surface Stereo Imager4 camera. "They help us plan measurements were making within reach of the robotic arm and interpret those measurements on a wider scale. "

  词汇:

  foil v. 挫败,使成泡影 conductivity n. 传导陡,导电胜

  scoop n. 铲斗 thaw v. 融化,融解

  vaporize v. 使蒸发,使汽化 panorama n. 全貌,全景图

  注释:

  1.NASA:National Aeronautics and Space Administration(美国国家航空航天局)的缩写。NASA总部设在华盛顿哥伦比亚特区,是美国政府系统中的航空航天科研机构,负责组织和协调美国航空航天的研究工作并提供咨询。

  2.Phoenix Mars Lander:凤凰号火星登陆器。其使命是探测火星地表下的冰层,分析冰层是否曾经融化产生液态水,并计划检测火星土壤是否含有生命存活的有机物。

  3.Thermal and Evolved—Gas Analyzer:热力与先进气体分析仪

  4.Stereo Imager:立体图像

  练习:

  1. What was discovered by NASAs 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 to deliver samples fail?

  A)The sample vaporized away.

  B)Fresh material was exposed to the air.

  C)The samples got stuck inside the scoop.

  D)The robotic arm hit a hard rock.

  1  [2]  [下一页]
闂傚倸鍊搁崐鎼佸磹妞嬪海鐭嗗〒姘e亾妤犵偛顦甸弫宥夊礋椤掍焦顔囬梻浣告贡閸庛倝宕甸敃鈧埥澶愬閻樼數娼夐梻浣稿閸嬪棝宕抽妷銉庢盯宕ㄧ€涙ǚ鎷洪梺鍛婂姇瀵爼骞嗛崼銉︾厵闁告劕寮堕幑锝囩磼椤旇偐澧︾€规洖宕埥澶娾枎韫囧海绱﹀┑锛勫亼閸婃牠鎮ч鐘茬筏濞寸姴顑呴崙鐘绘煏閸繃宸濈痪鎯с偢閺岀喖骞忕仦鐣屽帿闁诲孩鐔幏锟� 闂傚倸鍊搁崐鎼佸磹妞嬪海鐭嗗〒姘e亾妤犵偞鐗犻、鏇㈡晝閳ь剛澹曢崷顓犵=濞达綀鍋傞幋婵冩瀺闁绘ê鍘栫换鍡涙煏閸繂鈧憡绂嶉幆褜娓婚柕鍫濋娴滄繄绱掔拠鑼ⅵ闁靛棔绀侀埢搴ㄥ箣濠靛洨鈧娊姊洪崨濠庢畼闁稿鍋ら、娆撳磼濞戞绠氶梺缁樺姦娴滄粓鍩€椤掍胶澧い顐㈢箲缁绘繂顫濋鈧崑宥夋偡濠婂啰绠绘鐐差樀楠炴﹢顢欓懞銉︻仧闂備浇娉曢崳锕傚箯閿燂拷 QQ缂傚倸鍊搁崐鎼佸磹閹间礁纾瑰瀣捣閻棗銆掑锝呬壕閻庢鍠氶弫濠氥€佸Δ鍛劦妞ゆ帒瀚ч埀顒佹瀹曟﹢顢欓挊澶屾濠电姰鍨归崢婊堝疾濠婂牊鍎庢い鏍仜閺嬩線鏌熼崜褏甯涢柡鍛倐閺屻劑鎮ら崒娑橆伓 闂傚倸鍊搁崐鎼佸磹閻戣姤鍤勯柛顐f礀閸屻劎鎲搁弮鍫濈畺婵☆垯璀﹀ḿ鈺傘亜閹烘垵鈧懓鈻撻幆褉鏀芥い鏂款潟娴犳粓鏌涚€n偅灏伴柕鍥у婵偓闁挎稑瀚崳浼存倵鐟欏嫭绀€鐎规洦鍓濋悘鍐╃節閻㈤潧孝闁稿﹤缍婇、娆撳磼濞戞绠氶梺缁樺姦娴滄粓鍩€椤掍胶澧い顐㈢箲缁绘繂顫濋鈧崑宥夋偡濠婂啰绠绘鐐差樀楠炴﹢顢欓懞銉︻仧闂備浇娉曢崳锕傚箯閿燂拷 濠电姷鏁告慨鐑藉极閹间礁纾绘繛鎴欏灪閸嬨倝鏌曟繛褍鍟悘濠囨椤愩垺澶勯柟灏栨櫅闇夐柡宥庡幗閻撳繐鈹戦悙鑼虎闁告挸澧介幉鍛婃償閳藉棗娈梺鍛婃处閸嬪棝寮抽崱娑欑厓鐟滄粓宕滃☉娆戠彾闁哄洨鍠嗛崑鍛存煕閹般劍娅囬柛娆忔濮婅櫣绱掑Ο鑽ゎ槬闂佺ǹ锕ゅ﹢閬嶅焵椤掍胶鍟查柟鍑ゆ嫹 缂傚倸鍊搁崐鎼佸磹閹间礁纾归柟闂寸绾惧綊鏌熼梻瀵割槮闁汇値鍠楅妵鍕冀椤愵澀绮堕梺鎼炲妼閸婂潡骞冪憴鍕闁规鍠氬崗闂備焦瀵х换鍌炲箟濮椻偓瀵噣宕煎┑鍫濆Е婵$偑鍊栫敮鎺斺偓姘卞厴瀵偆鈧綆鍠楅悡蹇擃熆鐠虹儤顥炴繛鍛崌閺屸剝鎷呴棃鈺勫惈闂佸搫鐭夌紞渚€鐛鈧幖褰掝敃閵忊剝鏆橀梺鑽ゅ仦閻旑剟骞忛敓锟� 濠电姷鏁告慨鐑藉极閹间礁纾婚柣鎰惈閸ㄥ倿鏌涢锝嗙缂佺姳鍗抽弻鐔虹磼閵忕姵鐏堢紒鐐劤椤兘寮婚悢鐓庣鐟滃繒鏁☉銏$厓闂佸灝顑呴悘锔剧磼缂佹ḿ娲寸€规洖宕灒闁告繂瀚闂傚倷绀侀幖顐︻敄閸℃稒鍎庢い鏍仜閽冪喐绻涢幋娆忕仼閹喖姊洪棃娑辨Ф闁稿孩妞藉畷婵囧緞瀹€鈧壕钘壝归敐鍤藉綊鍩€椤掆偓閹芥粎鍒掗弮鍥ヤ汗闁圭儤鍨堕悗顒勬⒑閻熸澘鈷旂紒顕呭灦瀵煡骞栨担鍦弳闂佺粯娲栭崐鍦偓姘炬嫹
闂傚倸鍊烽懗鍫曞储瑜嶉悾鐑筋敆閸曨剙鍓堕梺鑹邦潐婢瑰宕i崸妤佲拻濞达絿枪閹垶淇婇崣澶婄闁告帗甯楅妶锝夊礃閻愵剚娅旈梻渚€娼х换鍫ュ磹閺囩姷涓嶆い鏇楀亾闁哄本娲樺鍕醇濠靛柈銊╂⒑缁嬫鍎愰柟鐟版搐閻e嘲顫滈埀顒勫春閳╁啯濯撮柣鎴炃氶弸宀勬⒒閸屾瑧顦﹂柟璇х節閵嗗啴骞囬弶璺唵闂佽法鍣﹂幏锟�