首页
登录
职称英语
Trial and error are the source of our knowledge.A、isB、wereC、hasD、have beenA本
Trial and error are the source of our knowledge.A、isB、wereC、hasD、have beenA本
游客
2023-12-27
41
管理
问题
Trial and error
are
the source of our knowledge.
选项
A、is
B、were
C、has
D、have been
答案
A
解析
本题考查主谓一致和时态。trial and error“反复实验”,是固定用法,当单数处理,所以谓语动词应用第三人称单数;又因为此举是在陈述一般事实,所以用一般现在时态。所以,答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/3308892.html
相关试题推荐
Whyshouldpeopleregulatetheresourceeffectively?[originaltext]Thedeclineo
Thepossibilitiesfor______energysources,includingsolarpower,windpower,
Trialanderrorarethesourceofourknowledge.A、isB、wereC、hasD、havebeenA短
Eventhoughthemainsourceof______exposureforamajorityofthehumanpopul
Trialanderrorarethesourceofourknowledge.A、isB、wereC、hasD、havebeenA时
Thesoldiersofpeace-keepingforcearetall,robustand,aboveall,resourceful
Eventhoughthemainsourceof______exposureforamajorityofthehumanpopulat
Eventhoughthemainsourceof______exposureforamajorityofthehumanpopulat
Thepossibilitiesfor______energysources,includingsolarpower,windpower,ge
Trialanderrorarethesourceofourknowledge.A、isB、wereC、hasD、havebeenA时
随机试题
W:Doyouknowthegirlinredunderthetree?M:【D1】______W:Right.Doyoukno
[originaltext]M:SharonEppersonjoinsusnow,she’sacorrespondentforCNBC,
[originaltext]Goodmorning,everybody.Intoday’slecture,wewilltalkabo
Presentlymanystudentsarenotsatisfiedenoughwiththequalityofeducati
Oneday,IsaacNewton,thegreatBritish【B1】______,askedafriendtohaved
运用领导作用原则包括()。A.要让每个员工了解自身贡献的重要性 B.要考虑所
与X线体层摄影比较,CT最主要的优点是A.采用激光相机拍照 B.无层面外组织结
理财规划书的最后部分是“附录”,主要包括()。A.所推荐金融产品的具体信息
青春期功血的治则A.防止子宫内膜病变 B.直接调整周期促排卵 C.减少周期
根据《公路桥涵地基与基础设计规范》(JTGD63—2007),关于地下连续墙基
最新回复
(
0
)