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
2023-09-01
8
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] 【B4】
选项
答案
extremely
解析
语义推断题。空格所在句主系表结构完整,故空格处应填入副词。由下段可知,火星上曾经是温暖的,故空格处应填入一个词表示“很,极度”。结合录音可知,答案为extremely。
转载请注明原文地址:https://www.tihaiku.com/zcyy/2975606.html
相关试题推荐
Thereasonsbehindthelackofphysicalactivityinvariousnations______(除了汽车
[originaltext]Oneofthereasonsforoursuccessasaspeciesisourabilityto
[originaltext]Oneofthereasonsforoursuccessasaspeciesisourabilityto
[audioFiles]audio_eusm_j01_057(20099)[/audioFiles]A、Reasons.B、Advice.C、Leave.
OnereasonwhyReebok’smanagerialpersonneldon’tliketheirshoestobecalled
OnereasonwhyReebok’smanagerialpersonneldon’tliketheirshoestobecalled
[originaltext]AfteryearsofstudyIhavedeterminedthatthereareonlytw
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
随机试题
Weneedvacations.Theyrechargeus,allowingustobemoreefficientallthe
MarieCuriewasthefirstfemaleprofessoratSevres,acollegeforgirlswh
某集团拟在某市投资建设一条自动化生产线,预期年生产能力为300万吨。该生产线可以
翻车机是一种大型的卸车设备。它具有效率高、耗电少等优点。下列选项中,关于翻车机安
预防性灌浆,是我国目前广泛采取的一种预防煤炭自燃的措施,其按灌浆与回采在时间上的
患儿,5岁,体重25kg,在家玩耍时不慎打翻开水瓶,双下肢被开水烫伤后皮肤出现大
推荐性标准是非强制性的标准,因此()。 A.任何单位都有权决定是否采用 B
设备安装时,所有设备安装的平面位置和标高,均应以( )为基准进行测量。A.车间
A.米托坦 B.地塞米松 C.可的松 D.氟轻松 E.甲泼尼松不能作全身
关于施工成本控制依据的进度报告的说法,错误的是()。A.进度报告提供了对应时间节
最新回复
(
0
)