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
2024-09-03
38
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。that指代structures on Earth,与created之间存在被动关系,故要用被动式,C、D都符合。地球的岩石结构早已由微生物创造出来,即created动作先于are known发生,故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3742491.html
相关试题推荐
SomeMartianrockstructureslookstrikinglylikestructuresonEarththatarek
SomeMartianrockstructureslookstrikinglylikestructuresonEarththatarek
随机试题
•Lookatthestatementsbelowandtheinformationaboutnewspaperstories.•Wh
WhatdidYangandCathyLaneusuallydoatweekends?Theyeithersaweachother
Duringastateofdeeprelaxation,severalphysiologicalchangestakeplace
商标异议是商标注册流程中的重要程序,但非必经程序。()
下列哪种材料性能是高分子化合物的固有缺点?()A.绝缘性能 B.耐磨性能
()是指从最高管理者到实际工作人员的等级层次的数量。()是指一名上级管理人员所直
下列属于格林(PRECEDE.PROCEED)模式的基本内容包括()A.社会
高层建筑的剪力墙,一般间距为()。A.2~4m B.不超过8m C.不超过1
根据《生产安全事故报告和调查处理条例》,工程施工中造成2人死亡、3000万元直接
最新回复
(
0
)