首页
登录
职称英语
For thousands of years comets had been a mystery to
For thousands of years comets had been a mystery to
游客
2024-02-24
14
管理
问题
For thousands of years comets had been a mystery to 【M1】______
man. They travel across the sky very fast and have a
bright ’tail’ of burnt gas. The comet Tempel I has an 【M2】______
orbit far outside the orbit of the furthest planet in our
solar system, Pluto. It has had been there for 4.6 billion years, 【M3】______
133 million kilometres from Earth. Last week
a little American spacecraft crash into Tempel 1. 【M4】______
The spacecraft had a camera and it took a photograph
of the comet every minute after it finally crashed into 【M5】______
its surface. The space mission to Tempel 1 cost $ 335
million and was called Deep Impact. Spacecraft was 【M6】______
travelling at 37,000 kilometres per hour when it hit the comet
and the crash completely destroying the spacecraft. But before 【M7】______
it hit the comet, the spacecraft took some amazingly photographs. 【M8】______
The last one was a close up picture the spacecraft spent 【M9】______
just 3 seconds time before it crashed into the comet. 【M10】______ [br] 【M3】
选项
答案
去掉had
解析
又是考过去完成时和现在完成时。这句中没有什么过去的时间点做参照,所以用现在完成时。结构是:has/have+动词的过去分词。
转载请注明原文地址:https://tihaiku.com/zcyy/3478443.html
相关试题推荐
Buildingafterbuildingunderwater.【B1】______inshelters.Thousandsofothe
Buildingafterbuildingunderwater.【B1】______inshelters.Thousandsofothe
Buildingafterbuildingunderwater.【B1】______inshelters.Thousandsofothe
Buildingafterbuildingunderwater.【B1】______inshelters.Thousandsofothe
Buildingafterbuildingunderwater.【B1】______inshelters.Thousandsofothe
[originaltext]Crosswaswhatpeoplecallamysteryman.Wehadknownhimfo
[originaltext]Crosswaswhatpeoplecallamysteryman.Wehadknownhimfo
[originaltext]Penurywaswhatpeoplecalledamysteryman.Wehadknownhim
Forthousandsofyearscometshadbeenamysteryto
Forthousandsofyearscometshadbeenamysteryto
随机试题
WritingEffectiveSurveyQuestionsI.Forquantitativedat
[originaltext]Tonight,I’llbespecificallytalkingaboutwordcof-mouthadv
[l]ispronounceddifferentlyin"lead"and"deal",thisphenomenoniscalledA、fr
“具有中国特色国际领先的能源互联网企业”的战略目标中,“中国特色”体现为坚持“两
下列说法正确的是()。 A.IRI是国际平整度指数 B.IRI是国际平整度标
某校的初二年级数学教师针对“平行四边形的性质”这一课题,拟定了如下教学目标及教学
共用题干 SomeSchoolingonBackpacksAccordi
旅游需求的地域指向性的特征决定了旅游企业的( )。A.规模小型化 B.布局分
压力容器按照压力等级划分可分为()。A.二个等级 B.三个等级 C.四个等级
某写字楼工程,建筑面积8640m2,建筑高度40m,地下一层,基坑深度4.5m
最新回复
(
0
)