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
13
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
[originaltext]Today,around5.5trillioncigarettesareproducedeveryyear
地下车库坡道的坡度为i‰(i>10),与平地相衔接的处理,下列哪项正确?()
容易导致中,……的原因,不包括()A.学生家庭富裕上网便捷 B.学校适应不良
基金管理人的董事、监事、高级管理人员和其他从业人员,其本人、配偶、利害关系人进行
具有温中回阳、温肺化饮功效的药物是()A.生姜 B.干姜 C.高良姜
共用题干 刘某是一名实习护生,在未经带教护士的带领下单独为患者进行静脉穿刺,无
左边给定的是纸盒的外表面,下面哪一项能由它折叠而成( ) A.如上图所示
下面四个图形中,只有一个是由上面的四个图形拼合(只能通过上、下、左、右平移)而成
下列关于民用建筑耐火等级的说法,正确的是()。A.某独立建造的老年人护理中心,
下列各项中,应在“坏账准备”借方登记的有()。A.冲减已计提的减值准备 B.
最新回复
(
0
)