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
37
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] 【B9】
选项
答案
This is why future missions will focus on the studyof ancient deposits,hoping to find fossilisedevidence of life
解析
听写关键词future missions,focus on,ancientdeposits,hoping,find,fossilised evidence,life
转载请注明原文地址:https://tihaiku.com/zcyy/3591877.html
相关试题推荐
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
ThemainreasonweexploreMarsistodetermineiflifeeverexistedonthe
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
Althoughinteriordesignhasexistedsincethebeginningofarchitecture,it
Althoughinteriordesignhasexistedsincethebeginningofarchitecture,it
随机试题
Thetechnologywas______complicatedthatfewengineersofthecompanywereable
It’sFridaynight,andyouwanttowatchamovieathomewiththatspecial
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirt
Untilrecently,mostpopulationgrowthhasoccurredinrelativelydenseurba
Formattingforresults.a)theuseofunderlines,italics,bold,andallcapsb
A.糖尿病肾病 B.原发性巨球蛋白血症 C.阻塞性黄疸 D.多发性骨髓瘤
“铁犁牛耕”的耕作方式在东汉时期逐渐推广到全国,分析下列提供的几种情形,其中直接
2009年4月,小李捡到现金10000元,购买某福利彩票,获得奖金1000000
我国供气来源多元化,主要包括国产气和进口气两部分。国产气主要有常规天然气、页岩气
( )对期货公司执行投资者适当性制度的情况进行核查验证。A.中国证监会及其派出
最新回复
(
0
)