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
Is there life anywhere in the universe other than on Earth? To answer that question, scientists look at outer space through tele
Is there life anywhere in the universe other than on Earth? To answer that question, scientists look at outer space through tele
admin
2020-12-02
70
问题
Is there life anywhere in the universe other than on Earth? To answer that question, scientists look at outer space through telescopes.They send up rockets and satellites and study the information that comes back.Scientists also study life forms on Earth.They think about the features on Earth that support life.Every answer helps them to know what to look for in outer space.
Researchers have learned that two things are required to keep life going on Earth.They are energy and flowing water.All life forms need water to survive.It takes energy to keep water in its liquid state, however.Earth’s energy comes from the sun.Our source for water is rain and snow, which are collected by oceans, lakes, rivers and streams.
What places in our solar system are likely to have energy to keep water in a liquid state? The answer to that question is unknown, but scientists have some ideas.They are looking very closely at the planet Mars.Although the atmosphere of Mars is very different from Earth’s atmosphere, it does have water.Martian air holds only about 1/1000 as much water as Earth’s air.Even that small amount can produce clouds, fog, and frost—all filled with water.The greatest problem with keeping water in a liquid state on Mars is the planet’s extreme cold.The average temperature on Mars is -81 degrees Fahrenheit.The warmest, it gets is 68 degrees Fahrenheit, and the coldest recorded temperature is -220 degrees Fahrenheit!
Life may also be possible on Europa, one of the moons of the planet Jupiter (木星).Scientists believe that Europa may have liquid water and volcanoes.The heat from volcanoes may keep oceans from freezing.Scientists are planning missions to Jupiter and Europa to bring back samples of surface ice.They suspect that if there is life on Europa, it may exist in an ice-covered ocean.They believe that deep below the ice, hot springs in the ocean floor heat the water.
Scientists also look at life on Earth to ponder questions about life in outer space.Life forms have adapted to some remarkably harsh conditions.Creatures too tiny to be seen with the human eye live in ice-covered Antarctic lakes and in steaming hot springs.Infrequently, small creatures can even be found in the dry centres of rocks.The existence of these life forms suggests that some very harsh places can support life.As scientists unlock the secrets of how living things survive on this planet, they come closer to answering questions about life forms elsewhere in our solar system and beyond.
Scientists use【A1】_________and space missions to study outer space to determine if there is life beyond Earth.After looking at life forms on Earth, scientists believe that living things need【A2】_________and energy.The planet 【A3】_________has water, while Jupiter’s moon Europa may have liquid water and【A4】_________.It’s amazing that life exists on Earth in places as frozen as Antarctica.Scientists continue to look closely at【A5】_________that support life on Earth for clues to where life may exist in other parts of the universe.
【A4】
选项
答案
volcanoes
解析
文章第四段第二句提到,欧罗巴可能有液态水和火山。因此,填入volcanoes。
转载请注明原文地址:https://kaotiyun.com/show/xajK777K
本试题收录于:
D类竞赛(专科)题库大学生英语竞赛(NECCS)分类
0
D类竞赛(专科)
大学生英语竞赛(NECCS)
相关试题推荐
A.aimB.argueC.reducingD.becauseE.reflectsF.strengthG.seekingH.available
A.butB.directC.fluentD.surveysE.subtleF.answeredG.dazzleH.abilities
A.butB.directC.fluentD.surveysE.subtleF.answeredG.dazzleH.abilities
(1)For12dayseveryspring,theinhabitantsofErlangen,auniversitytownnearNuremberg,forgettheirdailyroutinesanddevo
(1)IsitanywonderthatAmericaisalsoacountryofdangerouslyoverweightpeople?(2)AccordingtoarecentstudybytheN
(1)InarecentbookentitledThePsychicLifeofInsects,ProfessorBouviersaysthatwemustbecarefulnottocreditthelittl
DearKind-Trustee-Who-Sends-Orphans-to-College,HereIam!Itravelledyesterdayforfourhoursinatrain.It’safunnysen
(1)Springishere:flowersareinbloom,birdsongfillstheair,andtheinboxesofemployersarefilledwithdesperateappeals
A、Anewcompany.B、Anewproduct.C、Thejobmarket.D、Ajobinterview.D原文中,女士对男士说开始interview,由于这个单词具有两层含义:面试和采访,这里具体指哪一个需进一步确认。
Dannyleftthis________messageonmyansweringmachine:"Imustseeyou.Meetmeattwelveo’clock."Didhemeannoonormidni
随机试题
治疗血播性结核病时,在抗结核治疗同时加用肾上腺皮质激素的目的、除下列哪项外均正确
冠心病心绞痛发作的典型部位是
“十一五”时期,我国税收制度改革的任务包括()等。
()个月内发生()次以上特大交通事故负有主要责任或者全部责任的专业运输公司,由公安机关交通管理部门责令消除安全隐患,未消除隐患的机动车,禁止上道路行驶。
柔性路面在荷载作用下产生的(),在反复荷载作用下产生累积变形。
一般情况下,监理方对工程项目计量工作的范围包括()。
基金宣传推介材料的界定包括()。
能源价格高并非全是坏事,因为价格杠杆自会调节石油的流向,确保人类以剩下的石油找到更好的新能源,而不是全用到几十年前根本不存在的使夏天变凉爽的能源需求上。实际上。如果我们遵循价格杠杆,甚至无需教育消费者,人人都会做出理智的选择。那些价格杠杆不起作用的地方,多
阅读以下说明,回答问题,将解答填入答题纸对应的解答栏内。【说明】某公司的网络结构如图3-1所示,所有PC共享公网IP地址202.134.115.5接入Internet,公司对外提供www和邮件服务。为使互联网用户能够正常访问公司WWW和邮件服务,
ChooseTWOletters,A-E.Thelistbelowcontainssomepossiblestatementsaboutmicrowind-turbines.WhichTWOofthesestatemen
最新回复
(
0
)