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
外语
Perhaps more than anything else, scientists are eager to find out if Martian life existed in the past—or still exists.【C1】______
Perhaps more than anything else, scientists are eager to find out if Martian life existed in the past—or still exists.【C1】______
admin
2019-05-15
67
问题
Perhaps more than anything else, scientists are eager to find out if Martian life existed in the past—or still exists.【C1】______telescopes first zoomed【C2】______Mars in the 17th century, people have conjured up a wild【C3】______of images or what Martians might look like. But space probes like the 1997 Sojourner land rover have yielded no evidence of such alien beings.
Most experts agree that if life did at one time evolve on Mars, finding evidence of that life— which would likely take the form of tiny organisms—won’ t be easy.【C4】______, many scientists are optimistic. " We’ ve got organisms on Earth that adapted to life deep【C5】______the surface in underground water wells, "says Stephen Clifford.【C6】______life like that evolved on Mars four billion years ago, there’ s no reason why it【C7】______today. "
【C8】______last year’ s disappointing losses, the future of Martian exploration looks【C9】______This year, two major films about fictitious Mars missions—Red Planet and Missions to Mars—are certain to heighten interest in our planetary neighbour. More important, plans for new sets of NASA orbiters and landers—one to launch in 2001 , the other in 2003—are already in the works. Without a doubt, each new mission will inch scientists closer to【C10】______the mysteries of planet Mars.
【C6】
选项
A、When
B、What
C、That
D、If
答案
D
解析
本题考查从句的引导词。when表示“当……之时”;what表示“什么”。that引导从句,没有实际意思。if表示“如果”,引导条件状语从句。根据句意,本题选D。
转载请注明原文地址:https://kaotiyun.com/show/Qg3O777K
0
成人本科学位英语
相关试题推荐
______thecause,thehatebetweenthesemengrewdeeperanddeeper.
Ifwe______thebus,we______theconcertinthetheatrenow.
Itseemslikeeverydaythere’ssomenewresearchaboutwhetherourfavoritedrinksaregoodforus.(76)Oneday,sciencesaysa
Obviously,therewouldbenopointininvesting(投入)inacomputerifyouhadtocheckallitsanswers,butpeopleshouldalsor
Whatareyougoingtodoifyouareinaburninghouse?Howwillyouescape?Doyouknowhowtosaveyourself?Pleasereadthef
Welcometoourshop.AnythingIcandoforyou?
Jenny:Hey,Rosy!IheardthatyouaregoingtoTheMalltoday.Rosy:【D1】______Jenny:Yes.PleasebuymethebagthatIshowed
TheolderIget,themoreIvaluefriends,yetthe______timeandenergyIhaveinmaintainingoldfriendships.
VanGoghis______thebest-knownpainterintheworld.
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowingwhatliesinthewayofopportunityforpromotion,
随机试题
一个时期某一阶层或某一行业的人群对文化问题所持的态度和看法,或在某一文化事象里所表现的意识形态,称作______。
A、2岁以下B、青壮年C、成年D、老年男性E、3~10岁儿童小肠套叠常见于
以下哪一种植物不属于川贝母的原植物
某项目现金流量表(单位:万元)如下:则该项目的净现值和动态投资回收期分别为()。
在进行预算定额人工工日消耗量计算时,完成单位合格产品的基本用工为22工日,超运距用工为4工日,辅助用工为2工日,人工幅度差系数为12%,则预算定额中人工工日消耗量为()工日。
某旅馆建筑高度为24m,设有空气调节系统、无楼层服务员以及客房、餐厅、仓库、办公室等功能用房,无高位水箱,但设有临时高压给水,3L/s的气压稳压设备,并设湿式自动喷水系统,且仅在走道上安装黄色玻璃球喷头。请结合案例。分析并回答以下问题:该旅馆的自动喷水
行政程序的主要制度包括()。
如果菜单项的名称为“统计”,热键是T,在菜单名称一栏中应输入
Besidesa_______knowledgeofbusinessadministration,candidatesmusthaveaminimumof2years’experienceforthisproject.
Theeconomystoppedshrinkingayearago,butAmerica’sunemploymentproblemisasbigasever.Theofficialjoblessratewas9.
最新回复
(
0
)