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
2025-01-08
18
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/3903142.html
相关试题推荐
[originaltext]AnofficialfromthePhilippines’Presidentialpalacesaysthe
[originaltext]AnofficialfromthePhilippines’Presidentialpalacesaysthe
[originaltext]TOMOnlinewantstoprovideanonlineHRserviceinBeijingup
[originaltext]ThefirstcriminalcasehasbeenfiledagainstSaddamHussein,
[originaltext]ThefirstcriminalcasehasbeenfiledagainstSaddamHussein,
[originaltext]Friend:OK,sowhathappenedwhenyougottotheairport?Paulin
[originaltext]Friend:OK,sowhathappenedwhenyougottotheairport?Paulin
[originaltext]ChancelloroftheExchequerGordonBrownhasurgedrich,oil-p
[originaltext]ChancelloroftheExchequerGordonBrownhasurgedrich,oil-p
[originaltext]Woman:Dr.Mirkin,doctorsseemtoputalotofemphasisonex
随机试题
______,hefailedinthecollegeentranceexaminationagain.A、Todisappointhis
AsTheplanecircledovertheairport,everyonesensedthatsomethingwaswr
We’dratheryou______theaccounttomorrow.A、settledB、settleC、wouldsettleD、
建设工程施工质量验收统一标准是统一建筑工程质量的验收方法、程序和()。A.技术
糖尿病肾病早期诊断指标是A.尿微量清蛋白 B.血尿素 C.血肌酐 D.血尿
下列选项中,属于债权人提出重整申请的条件的是( )。A、企业法人不能清偿到期债务
A.疏散风热,平肝明目,清热解毒B.疏散风热,平肝明目,生津润燥C.疏散风热,平
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
分析管理层要求不实施函证的原因时,注册会计师应当保持职业怀疑态度,并且需要考虑一
应急演练的原则主要包括()。A.结合实际、合理定位 B.着眼实战、讲究实效
最新回复
(
0
)