首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Traveling to Mars is usually a【C1】________business—with a single spacecraft taking off from a single launchpad for the seven-mon
Traveling to Mars is usually a【C1】________business—with a single spacecraft taking off from a single launchpad for the seven-mon
admin
2022-03-27
80
问题
Traveling to Mars is usually a【C1】________business—with a single spacecraft taking off from a single launchpad for the seven-month trip to the Red Planet. That appeared to be the case again on July 30, when NASA’s Perseverance rover roared【C2】________the pad at Cape Canaveral. But this time the ship will have plenty of【C3】________.
On July 19, the United Arab Emirates made its first bid to join the Mars game, launching the "Hope" spacecraft on a mission to orbit Mars for at least two years【C4】________studying its atmosphere. Four days later, China launched its "Questions to Heaven" spacecraft, a three-part ship【C5】________an orbiter, a lander and a six-wheel rover. And a fourth mission, a joint Russian-European project, ExoMars,【C6】________a rover of its own, was also planned for this summer, though it has been【C7】________to 2022 because of engineering problems with its parachute and avionics.
So why all the interest in Mars—and why right now? The timing issue has【C8】________to do with planetary mechanics. As they fly their differing solar orbits—Earth on the inner track, Mars on the outer—the distance between the two worlds is forever changing. At their greatest remove, when they are on【C9】________sides of the sun, they are up to 250 million miles apart. But once every two years, they line up on the same side of the sun, with just 35 million miles separating them. This summer just such an alignment is taking place, dramatically slashing inter planetary travel time to the current seven-month itinerary. So that explains the【C10】________question.
The why part is because of Mars’ tantalizing,【C11】________biological history. The surface of the planet is etched with dry riverbeds, stamped with ancient sea basins, marked by deep depressions that could only【C12】________long-vanished water.
Perseverance is landing in one such place; the Jezero Crater, north of the Martian equator, which is lined with both inflow and outflow channels showing it was once a vibrant sea. Previous rover analyses in similar locations have discovered chemicals and【C13】________that form only in the【C14】________of water, proving that Mars was once, like Earth,【C15】________wet.
Now the mission is to look for actual fossilized organisms or even【C16】________of extant microbial life. To that end, Perseverance is the most ambitious of the new spacecraft and is actually just the first part of a multipart mission. During its explorations, it will【C17】________Martian soil samples and set them neatly on the ground【C18】________another spacecraft that could leave Earth as early as 2026.
Finding life on Mars would be an epochal【C19】________The rights that go with being first to make the find is part of what makes the planet the hot new【C20】________.
【C9】
选项
A、contrary
B、contradictory
C、opposite
D、adverse
答案
C
解析
形容词辨析题。四个选项分别为A项contrary“(观点、态度、反应)相对立的”;B项contradictory“矛盾的”;C项opposite“对面的”;D项adverse“不利的”。根据原文 “相距最大时,它们(地球和火星)之间达到2. 5亿英里,此时它们在太阳的________位置”,并结合常识可知,空格处所填词应有“对面的”之意,四个选项只有C项符合题意,故答案为C项。
转载请注明原文地址:https://kaotiyun.com/show/uhi4777K
0
考研英语二
相关试题推荐
ThewriterwarnsAmericansthat______.By"commonresources"(Paragraph2),theauthormeansthat______.
Weshouldconcentrateonsharplyreducinginterestratestopulltheeconomyoutof______.
YouhavejustcomebackfromtheU.S.asamemberofaSino-Americanculturalexchangeprogram.WritealettertoyourAmerican
ReadthefollowingChineseandwriteanabstractof80~100words.YoushouldwriteyouranswersonANSWERSHEET2.
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
WholesalepricesinJulyrosemoresharplythanexpectedandatafasterratethanconsumerprices,【1】thatbusinesseswerestill
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
Shouldaleaderstrivetobelovedorfeared?Thisquestion,famouslyposedbyMachiavelli,liesattheheartofJosephNye’sne
随机试题
简述备用信用证与商业跟单信用证的区别。
患者男,28岁。两年前体检查出HBsAg阳性,身体无任何不适,平素体健,近一周来厌食恶心,巩膜黄染,实验室检查:ALT300U/L,血清总胆红素150μmol/L,HAVIgG抗体(﹢),HBsAg(﹢),HBeAg(﹢),抗HBcIgM抗体(﹢)。
某企业在生产经营活动中发生了死亡2人的生产安全事故。按《生产安全事故报告和调查处理条例》的规定,该事故应在规定的时限内上报至()安全生产监督管理部门和负有安全生产监督管理职责的有关部门。
下列关于水泥混凝土道路垫层的说法中,不正确的是()。
关于管片拼装顺序以下说法错误的是()。
甲小学为了“六一”儿童节学生表演节目的需要,向乙服装厂订购了100套童装,约定在“六一”儿童节前一周交付。5月28日,甲小学向乙服装厂催要童装,却被告知,因布匹供应问题6月3日才能交付童装,甲小学因此欲解除合同。根据《合同法》的规定,下列关于该合同解除的表
行政复议期间,有下列情形之一的,行政复议终止()。
关于拘传,下列说法不正确的是()
某办公室有炎泽、梓豫和亚娜3名工作人员,本周有分别涉及英语、数学、逻辑、写作和政治的5项工作需要他们完成。关于任务安排,需要满足下列条件:(1)每人均需至少完成其中的一项工作,一项工作只能由一人完成;(2)写作和逻辑工作都不是由炎泽完成的;(3)如
DothefollowingstatementsagreewiththeinformationgiveninReadingPassage2?Inboxes17-23onyouranswersheetwriteTRU
最新回复
(
0
)