首页
登录
职称英语
The main reason we explore Mars is to determine if life ever existed on the
The main reason we explore Mars is to determine if life ever existed on the
游客
2024-05-10
40
管理
问题
The main reason we explore Mars is to determine if life ever existed on the planet. We have tried for centuries, starting with 【B1】______and lately with satellites, landers and rovers. We have 【B2】______ for it directly and indirectly. No luck so far. Some think life has never been there. Others think it was there in the past but is now gone. Many think why bother, but that’s a whole different story. I think we are 【B3】______in the wrong places. Here is why.
The surface of Mars is 【B4】______cold and dry. Cosmic and solar 【B5】______reach the surface by the thin atmosphere, and the soil contains strong oxidants (氧化剂) that destroy organic 【B6】______. Fat chance for life. But it wasn’t always so.
Early in its history Mars was warmer and 【B7】______enough for the development of rivers, lakes and perhaps oceans. The atmosphere was thicker and the protective magnetic (磁的) field was switched on. Mars might be 【B8】______today, but life would have been possible in the past. 【B9】______
But first we need to find a promising location, and that means reconstructing Martian history. 【B10】______, what type of minerals formed and if the geochemical conditions were compatible with life. Once promising sites are identified, we need to find out if there are 【B11】______ [br] 【B7】
选项
答案
wetter
解析
并列关系题。空格前是warmer,而and又连接两个词性和形式一致的词汇,因此空格处单词也应该是形容词的比较级。根据下文句意可知,原来火星上有河流、湖泊和海洋,可以推断出原来的火星很湿润,空格处单词应该具有“潮湿,湿润”之意。结合录音可知,答案为wetter。
转载请注明原文地址:http://tihaiku.com/zcyy/3591875.html
相关试题推荐
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
Althoughinteriordesignhasexistedsincethebeginningofarchitecture,it
Althoughinteriordesignhasexistedsincethebeginningofarchitecture,it
随机试题
TopicHowtoBeCreativeForthispart,youareallowed30minutestowrit
[originaltext]I:Goodmorning,listeners.TodayweareveryhappytoinvitePro
Accordingtotheauthor,theAncientGreeksandRomans______.[br]Accordingto
UniversalHealthCare,Worldwide,Is
工人在为资本家进行资本积累的同时,也以日益扩大的规模生产出使他们自身成为相对过剩
成本基准是对项目进行成本管控的重要措施,成本基准是指按时间分段的项目( )A.
以下关于室内消火栓设置的叙述中,不准确的有()。A.消防电梯前室应设消火栓
当汇率用单位外币的本币值表示时,下列说法正确的是()。 A.汇率上升,为维持
当日买进的权证,当日可以行权。当日行权取得的标的证券,当日可以卖出。()
脑栓塞的病因
最新回复
(
0
)