首页
登录
职称英语
________, many problems of space flight could not be solved now.A、If electronic
________, many problems of space flight could not be solved now.A、If electronic
游客
2024-08-31
35
管理
问题
________, many problems of space flight could not be solved now.
选项
A、If electronic computers would not have been invented
B、Had electronic computers not invented
C、Had electronic computers not been invented
D、If electronic computers were not invented
答案
C
解析
此句为混合型虚拟语气结构,从句表示与过去事实相反,主句是表示与现在事实相反。省去if,虚拟条件状语从句用倒装形式。故C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3737941.html
相关试题推荐
Sheremainsconfidentand______untroubledbyourpresentproblems.A、indefinite
Therearestillmanyproblemsaheadofus,butfortunatelywecanseethelight
Beforethefirstnon-stopflightmadein1949,it______necessaryforallplanes
Itwasreportedthata73-year-oldmandiedonanEtihadflight_____toGermanyf
Giventheadvantagesofelectronicmoney,youmightthinkthatwewouldmovequi
Giventheadvantagesofelectronicmoney,youmightthinkthatwewouldmovequi
Giventheadvantagesofelectronicmoney,youmightthinkthatwewouldmovequi
Giventheadvantagesofelectronicmoney,youmightthinkthatwewouldmovequi
______you______furtherproblemswithyourprinter,contactyourdealerforad
_______humanproblemsthatrepeatthemselvesin_______liferepeatthemselves
随机试题
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,but
In1959,Hawaiibecamethefiftiethstateintheunion.【C1】________Congress
TheEnglishRenaissanceTheEnglishRenaissancedatesfromthelate15thandear
[originaltext]Oneofthereasonsforoursuccessasaspeciesisourabilit
大雁南飞时,排成人字形,对此你有什么看法?
外阴恶性肿瘤中最常见的是A.外阴鳞状细胞癌 B.外阴恶性黑色素瘤 C.外阴基
游戏化管理:是指在不是游戏的场景里使用得分、等级排序、竞争等游戏中的元素的管理行
在一条公路的两边植树,每隔3米种一棵树,从公路的东头种到西头还剩5颗树苗,如果改
使用中药时,需后下的饮片是()A.阿胶 B.石膏 C.钩藤 D.栀子
(2020年真题)根据证券法律制度的规定,在我国境内发行下列证券时,应当适用《中
最新回复
(
0
)