首页
登录
职称英语
We learned that Columbus has discovered America in 1492.A、had discoveredB、disco
We learned that Columbus has discovered America in 1492.A、had discoveredB、disco
游客
2023-12-27
69
管理
问题
We learned that Columbus
has discovered
America in 1492.
选项
A、had discovered
B、discovers
C、discovered
D、was discovering
答案
C
解析
时态应用本句是个主从复合句;主句用的是一般过去时,除一些特殊情况(如:客观真理总用一般现在时)外,主从句应遵守时态一致的原则,因此排除选项B;根据句意,哥伦布发现美洲(新大陆)不是当时正在做的工作,因此排除选项D;选项A是过去完成时,选项C是一般过去时,两者均表过去的动作,但一般过去时表示的是相对于现在的过去时间,而过去完成时表示的是相对于过去某一时刻的过去,即过去的过去;从句中有一个表示过去时间的状语,所以C是答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3310204.html
相关试题推荐
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmo
随机试题
Completethenotesbelow.WriteONEWORDONLYforeachanswer.Chimpanzeebehavi
Thespeakerwasverygoodat______hisideasduringthediscussion.A、puttingasid
WhenmenreturnedfromWorldWarIIandthepostwar"babyboom"began,Americans
Youcanneverbea(competence)______managerifyouspendalotoftimeontrifl
给定资料: 城市竞争的本质是城市综合服务功能的竞争。随着市场经济的发展,城
食品腐败变质的鉴定指标不包括( )。A.物理指标 B.微生物指标 C.化学
A.由指定的经营单位凭盖有医疗单位公章的医生处方配方使用或限量零售B.仅供医疗单
A.单纯扁平骨盆 B.中骨盆及出口平面狭窄 C.畸形骨盆 D.均小骨盆
关于梅肯鲍姆压力接种训练的三阶段模型,下列说法中正确的是()。 (A)概念阶
苯急性中毒主要影响( )。A.造血系统 B.消化系统 C.中枢神经系统
最新回复
(
0
)