首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
财务会计
共用题干 A Record-Breaking RoverNASA\'s Mars
共用题干 A Record-Breaking RoverNASA\'s Mars
Freeti
2019-12-17
19
问题
共用题干A Record-Breaking Rover
NASA's Mars rover Opportunity has boldly gone where no rover has gone before—at least in terms of distance. Since arriving on the Red Planet in 2004,Opportunity has traveled 25 .01 miles,more than any other wheeled vehicle has on another world.
“This is so remarkable considering Opportunity was intended to drive about 1 kilometer and was never designed for distance,”says John Callas,the Mars Exploration Rover Project Manager.
He works at NASA's Jet Propulsion Laboratory in Pasadena,California.“But what is really importantly is not how many miles the rover has racked up,but how much exploration and discovery we have accomplished over that distance.”
The solar-powered Opportunity and its twin rover,Spirit,landed on Mars 10 years ago on a mission expected to last 3 months. The objective of the rovers was to help scientists learn more about the planet and to search for signs of life,such as the possible presence of water.
Spirit stopped communicating with Earth in March 2010,a few months after it got stuck in a sand pit. But Opportunity has continued to collect and analyze Martian soil and rocks.
During its mission,Opportunity has captured,and sent back to Earth,some 187,000 panoramic and microscopic images of Mars with its cameras. It has also provided scientists with data on the planet's atmosphere,soil,rocks,aid terrain.
The rover doesn't seem to be ready to stop just yet. If Opportunity can continue on,it will reach another major investigation site when its odometer hits 26.2 miles. Opportunity has beer working on Mars since January 2004.
Researchers believe that clay minerals exposed near Marathon Valley could hold clues to Mars's ancient environment. Opportunity's continuing travels will also help researchers as the, plan for an eventual human mission to the Red Planet.
选项
Opportunity is a record breaking rover in the sense of________.A: how long is has stayed in spaceB: how far it has traveledC: how much investment it has involvedD: how many facilities it has been equipped with
答案
B
解析
根据第一段“NASA's Mars rover Opportunity has boldly gone where no rover has gone before—at least in terms of distance.”可知,“机遇号”比任何漫游车行驶的距离都长。故选B。 从第二、三段可知,“机遇号”并不是为长途行驶而设计的,它本来预定只能行驶大约一千米。因此“机遇号”在被设计时,约翰并没有准确地知道它的价值。故本题选 B。 由第四段“The objective of the rovers was to help scientists learn more about the planet and to search for signs of life , such as the possible presence of water.”可知,把“机遇号”和 “勇气号”送上火星的目的之一是寻找生命的迹象。故本题选D。 根据文章最后两段可知,如果“机遇号”继续行驶的话,在它行驶到26.2英里的时候,它就会到达另一个重要的研究场地——马拉松谷,因此C项正确。倒数第二段第一句说,“机遇号”不会止步于此,故A项错误。B、D项文中并未提到。 由最后一段可知,“机遇号”接下来的工作能够帮助研究人员实施人类最终登陆火星的计划。故B项“科学家正努力把更多的人类送上火星”是正确答案。
转载请注明原文地址:https://ti.zuoweng.com/ti/3wOfKKKQ
相关试题推荐
D根据题干第二个图形的结构,可排除A、B、C,如图所示:
A题干符号规律为ABCABD,只有A项符合此规律。故答案选A。
B题干符号规律为ABCDEAB,只有B项符合此规律。故答案选B。
(―)每道题在上边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。
A题干符号规律是AABCBC,只有A项符合。
每道题在左边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。在右
每道题在左边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。在右
请从四个选项中选出正确的一项,其特征或规律与题干给出的一串符号的特征或规律最为
请从四个选项中选出正确的一项,其特征或规律与题干给出的一串符号的特征或规律最为相
请从四个选项中选出正确的一项,其特征或规律与题干给出的一串符号的特征或规律最为相
随机试题
钢结构经表面处理后,其基体表面不宜含有()等附着物。 A、氢离子 B、氧离子
关于周围神经病损的康复,正确的是 A.周围神经病损的康复评定,不包括ADL评定
根据生命损失年估计,()是我国人群死亡和过早死亡的主要原因。
吊杆间距通常为()。
第七届亚欧首脑会议于2008年10月25日在北京落下帷幕,会议发表了《可持续发展
下列哪组不属于夺命“急症”?()A.肺栓塞、哮喘B.冠心病、毒品过量C.脑出血、急性坏死性胰腺炎D.阑尾炎、腹膜炎
舌痩薄、色淡者多属A.脾肾阳虚B.气血两虚C.阴虚火旺D.肾精亏损E.胃阴不足
补益药的服药时间是A:饭前服B:不拘时服C:多次分服D:饭后服E:空腹服
市区某企业房产原值共2500万元,2018年5月1日将其中的30%用于对外投资联营,投资期限10年,不承担投资风险,当年取得固定利润50万元。已知当地政府...
下列原始凭证中,属于通用凭证的有( )。A.收料单B.银行转账结算凭证C.增值税专用发票D.折旧计算表