首页
登录
职称英语
Some Martian rock structures look strikingly like structures on Earth that are k
Some Martian rock structures look strikingly like structures on Earth that are k
游客
2024-09-13
30
管理
问题
Some Martian rock structures look strikingly like structures on Earth that are known_____ by microbes.
选项
A、having been created
B、being created
C、to have been created
D、to be created
答案
C
解析
空格所在的定语从句为“sth. be known to do”结构,因此排除A、B项。其次,that指代地球上的岩石结构,与created之间存在被动关系,故要用被动式,C、D都符合。最后,当不定式动作发生在谓语动词的动作之前时,不定式需要用完成式,本题中,在人们已知前,岩石结构已经由微生物创造成,即created动作先于are known发生,所以选择C项to have been created。
转载请注明原文地址:https://tihaiku.com/zcyy/3755965.html
相关试题推荐
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
AmericanFamilies1.Familystructures【T1】______orn
SomeMartianrockstructureslookstrikinglylikestructuresonEarththatarek
随机试题
Mostpeoplecanrememberaphonenumberforuptothirtyseconds.Whenthiss
Whydoesn’tthewomanchargethemanforhislatecheck-out?[br][originaltext
When_______,thebridgeconnectingtheislandtothecontinentwillbeopento
(2016)下列选项中计入其他综合收益的有( )。 A.现金流量套期工具产
肺结核属于A、乙类传染病按甲类处理 B、甲类传染病按乙类处理 C、甲类传染病
双侧眼睑下垂见于A:脑炎 B:脑脓肿 C:蛛网膜下隙出血 D:脑出血 E
1.与别人发生矛盾时,正确的态度是()。(A)站在对方的立场上想一下自
经常影响性功能障碍的问题多出现在( )。A.家庭关系中 B.工作中 C
立井井筒施工中,有关井下爆破作业的基本规定是()。A.专职爆破员应依照爆破作业说
落实加快工程施工进度所需资金,属于项目目标动态控制纠偏措施中的()。A.组织措施
最新回复
(
0
)