首页
登录
职称英语
At the first sight the planet Mars(火星)does not appear very welcome to any ki
At the first sight the planet Mars(火星)does not appear very welcome to any ki
游客
2024-01-19
45
管理
问题
At the first sight the planet Mars(火星)does not appear very welcome to any kind of life. It has very little oxygen and water, the temperature at night is below -50°C and winds of 100 miles per hour cause severe dust storms. However, the surface of the planet seems to show that water flowed across it some time in the past, and it is believed that there is enough ice at the poles to cover the planet with water if it melts. Although there is no life on the Mars now, some scientists think that there may have been some form of life long time ago. At that time, the planet had active volcanoes; the atmosphere was thicker and warmer; and there was water. In fact, in some ways the Mars may have been similar to the Earth, where life exists.
Some people believe that the Mars could support life in the future if the right conditions were produced. The first step would be to warm the planet using certain gases which trap the Sun’ s heat in the planet’s atmosphere. With warmth, water and carbon dioxide, simple plants could begin to grow. These plants could slowly make the Mars more suitable for living. It is estimated that the whole process might take between 100,000 and 200,000 years. In the meantime, people could begin to live on the planet in special closed environments. They would provide a lot of useful information about conditions on the Mars and the problems connected with living there. [br] Which is the best title for this passage?
选项
A、The Possibility of Life on the Mars
B、Future Conditions on the Mars
C、The Mars and the Earth
D、A Study of the Climate of the Mars
答案
A
解析
主旨大意题。通观全篇文章,作者讲述了在火星上生活的可能性。所以选项A为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3374730.html
相关试题推荐
[originaltext]Thesecretofalongandhappymarriageappearstobenotto
[originaltext]Thesecretofalongandhappymarriageappearstobenotto
[originaltext]W:Goodevening!WelcometoourTalkShowprogram.Ourguesttoda
[originaltext]W:HelloandwelcometoTrendUK.Creativeindustriesoftenattra
Athirdoftheplanet’slandisseverelydegradedandfertilesoilisbeing
Athirdoftheplanet’slandisseverelydegradedandfertilesoilisbeing
Athirdoftheplanet’slandisseverelydegradedandfertilesoilisbeing
Athirdoftheplanet’slandisseverelydegradedandfertilesoilisbeing
Athirdoftheplanet’slandisseverelydegradedandfertilesoilisbeing
Theinnervoiceofpeoplewhoappearunconsciouscannowbeheard.Forthefir
随机试题
A.中等强度作业 B.大强度作业 C.极轻度作业 D.轻度作业 E.极大
液体石油沥青可用于()施工。A:透层 B:粘层 C:热拌沥青混凝土 D:
关于风险管理,人们在生活与工作中呈现出两种具有明显差异甚至对立的语言体系,以下不
A.乳白色稀薄液体B.黄色水样透明液体C.豆腐渣样分泌物D.黄色浑浊黏稠分泌物E
患儿,女,医院体检为珠蛋白生成障碍,小细胞低色素性贫血,出现异形、靶形红细胞。请
急性肠套叠最常见的病因是A:胃肠道功能紊乱 B:肠息肉 C:肠肿瘤 D:美
小海在学校组织的义务劳动中,不慎造成腿部韧带拉伤,小海的医疗费用应由谁承担(
下列说法正确的有( )。A.会计报表信息并不能满足所有信息使用者的需要 B.非
一患者因车祸致颧骨严重粉碎性骨折,应选用的复位方法是A.颌间牵引 B.上颌窦纱
水运交通事故的发生与外界条件、技术故障、不良的航行条件、导航失误等因素密切相关。
最新回复
(
0
)