Some Martian rock structures look strikingly like structures on Earth that are known____by microbes. (2017-18)

admin2020-03-20 55

问题 Some Martian rock structures look strikingly like structures on Earth that are known____by microbes. (2017-18)

选项 A、having been created
B、being created
C、to have been created
D、to be created

答案C

解析考查不定式。be said／reported／believed／thought／known／reported后面可以接to do表示“将要做”，接be doing表示“正在做”，接have done意为“已经做完某事”。原句中are known后面接不定式是固定搭配，故排除选项A和B。因为微生物创造形成结构这一动作已经完成，时态用完成时，排除D。逻辑主语“结构”和动词“创造”是被动的关系，故本题答案为C。

转载请注明原文地址:https://kaotiyun.com/show/ulRK777K

专业英语四级

相关试题推荐

ChoosingEnglishProgramsintheUSA1.Whatisyourgoal?Fora【T1】______:2weeksto2monthsTobecome【T2】______inEnglish10
A.unspoiledB.renewC.originalD.livedE.architecturalF.initialG.someH.nearbyI.spoiledJ.maintainedK.vol
A、Examplesofdifferenttypeschildren.B、Howtorunparentingworkshops.C、Thewaytocommunicatewithchildren.D、Thewaytoc
Mother’sDayInBritain,Mother’sDayfallsonafewweeksbeforethefestivalofEaster./Butitisalwaysintheearlyspr
Studentsindifferentcountriespaydifferentattentiontophysicalactivities.Lookatthefollowingchartcarefullyandwrite
ImetTim’ssisteryesterday.Sheis_______thanTim.
Fortypeoplewerekilledina________ontherailwayyesterday.
[A]affect[B]consistency[C]contrary[D]contribute[E]decrease[F]dominant[G]engaged[H]essentially[I]extremel
It’shightimewe______cuttingdowntherainforests.
　　Recently,acollegestudenthelpedanoldwomanwhofelldownandwasaccusedofshovingtheoldwomantotheground.Thecase

随机试题

患者，男，72岁，反复咳嗽、咳痰20余年，并伴进行性呼吸困难10余年。因上呼吸道感染以上症状加重并出现意识模糊1天。查体：BP100／60mmHg，口唇发绀，桶状胸，双肺叩诊呈过清音，呼吸急促，双肺可闻及细湿哕音，双下肢凹陷性水肿，病理反射未引出。X线检查
A、Becausehumanbeingsarepowerfulenoughtokilloneanother.B、Becauseeveryspecieswillbecomeextinctbynaturalselection
在数据库技术中，实体集之间的联系可以是一对一、一对多或多对多，那么“学生”和“课程”的联系为______________。
TheMinisterforCommunityDevelopmentthoughtlongandhardabouthowto______thesocialproblemsofthepoorareas.
下列关于一、二等重力点联测说法正确的是()。
“征免”栏应填()。
下列各项中，应在“预付账款”贷方核算的是()。
根据教学中使用的主要方法划分课的种类，可分为【】
“从严治警”的基本含义是对公安民警严格教育、严格训练、严格管理、严格纪律。()
方程f(x)=1有且仅有一个实根．(1)f(x)=|x-1|(2)f(x)=|x-1|+1

最新回复(0)

Some Martian rock structures look strikingly like structures on Earth that are known____by microbes. (2017-18)

专业英语四级

ChoosingEnglishProgramsintheUSA1.Whatisyourgoal?Fora【T1】______:2weeksto2monthsTobecome【T2】______inEnglish10

A.unspoiledB.renewC.originalD.livedE.architecturalF.initialG.someH.nearbyI.spoiledJ.maintainedK.vol

A、Examplesofdifferenttypeschildren.B、Howtorunparentingworkshops.C、Thewaytocommunicatewithchildren.D、Thewaytoc

Mother’sDayInBritain,Mother’sDayfallsonafewweeksbeforethefestivalofEaster./Butitisalwaysintheearlyspr

Studentsindifferentcountriespaydifferentattentiontophysicalactivities.Lookatthefollowingchartcarefullyandwrite

ImetTim’ssisteryesterday.Sheis_______thanTim.

Fortypeoplewerekilledina________ontherailwayyesterday.

[A]affect[B]consistency[C]contrary[D]contribute[E]decrease[F]dominant[G]engaged[H]essentially[I]extremel

It’shightimewe______cuttingdowntherainforests.

Recently,acollegestudenthelpedanoldwomanwhofelldownandwasaccusedofshovingtheoldwomantotheground.Thecase

A、Becausehumanbeingsarepowerfulenoughtokilloneanother.B、Becauseeveryspecieswillbecomeextinctbynaturalselection

在数据库技术中，实体集之间的联系可以是一对一、一对多或多对多，那么“学生”和“课程”的联系为______________。

TheMinisterforCommunityDevelopmentthoughtlongandhardabouthowto______thesocialproblemsofthepoorareas.

下列关于一、二等重力点联测说法正确的是()。

“征免”栏应填()。

下列各项中，应在“预付账款”贷方核算的是()。

根据教学中使用的主要方法划分课的种类，可分为【】

“从严治警”的基本含义是对公安民警严格教育、严格训练、严格管理、严格纪律。()

方程f(x)=1有且仅有一个实根．(1)f(x)=|x-1|(2)f(x)=|x-1|+1

ChoosingEnglishProgramsintheUSA1.Whatisyourgoal?Fora【T1】:2weeksto2monthsTobecome【T2】inEnglish10

　　Recently,acollegestudenthelpedanoldwomanwhofelldownandwasaccusedofshovingtheoldwomantotheground.Thecase