首页
登录
职称英语
[originaltext] CAPE CANAVERAL, Fla.—The spacecraft Messenger rocketed away Tu
[originaltext] CAPE CANAVERAL, Fla.—The spacecraft Messenger rocketed away Tu
游客
2023-12-18
38
管理
问题
CAPE CANAVERAL, Fla.—The spacecraft Messenger rocketed away Tuesday on a long quest to reveal the secrets of mysterious, superhot Mercury, the sun’s nearest planet.
"A voyage of mythological proportions," a NASA flight controller announced as soon as Messenger shed its final rocket stage hours before dawn.
The journey will take 6 1/2 years, covering nearly 5 billion miles on a roundabout ramble through the inner solar system. The probe should reach Mercury by March 2011, then spend a year gathering data.
Scientists want to know how the planet turned out the way it did, and whether the perpetually dark craters at the poles hold ice. Anything scientists can learn about how Mercury formed will shed light on the origins of Venus, Earth and Mars, each one very different.
Tuesday’s launch came one day later than planned; Monday’s attempt had to be scrubbed because of bad weather.
It was a busy night for the U. S. space agency with the Mercury send-off coming less than an hour before another NASA unit directed a spacewalk by the astronaut and cosmonaut aboard the international space station.
The Messenger mission is part of NASA’s bargain-focused Discovery program—costing$427 million for the launch and all the scientific analysis years later in a mission devised by John Hopkins University.
选项
A、The spacecraft will fly direct to Mercury.
B、The spacecraft will fly three times past Mercury.
C、The spacecraft was launched a week later than planned.
D、There is no specific task for this journey.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3283739.html
相关试题推荐
[originaltext]Atwenty-threedaysearchoperationthatbeginsThursdaywill
[originaltext]Schoolgoverningorganizationsinthreestatesandthenation’
[originaltext]Martin:Hithere,Pat.Howareyou?Pat:Fine,thanks,Martin.I
[originaltext]Martin:Hithere,Pat.Howareyou?Pat:Fine,thanks,Martin.I
[originaltext]VoiceOne:OnehundredmilesofftheCaliforniacoast,anunde
[originaltext]VoiceOne:OnehundredmilesofftheCaliforniacoast,anunde
[originaltext]TheUniversityofMichigancarriesoutasurveyofthedrugha
[originaltext]TheUniversityofMichigancarriesoutasurveyofthedrugha
[originaltext]FranceandtheUShavesignedanaccordtosharesensitiveinf
[originaltext]TheUNagency,theWorldFoodProgramme,saysIraqisfacinga
随机试题
Theincreaseinglobaltrademeansthatinternationalcompaniescannotaffor
[originaltext]Forseveralyears,humanresourcesdirectorPeteTapaskarsay
职业伤害的预防对策不包括A.技术对策 B.教育对策 C.法制对策 D.管理
阿托伐他汀主要用于治疗()。A:高甘油三酯血症 B:高胆固醇血症 C:高磷
能够封锁一个场地的四周或封锁探测几个主要通道路口,还能远距离进行线控报警,应选用
关于商用房贷款的担保,下列说法错误的是()。A.采用抵押方式申请商用房贷款
在MMPI及MMPI-2剖面图中,如果L、F、K三个效度量表的分数均相当高,临
关于政府预算决策,以下表述错误的是()。A.政府预算决策过程的实质是对公共
“逐步形成橄榄型分配格局”的重要预期和理想目标,既是我们党带领全国各族人民朝着共
根据《标准设计施工总承包合同》,合同进度计划是指( )。A.承包人编制的合同项目
最新回复
(
0
)