首页
登录
职称英语
Scientists believe that either volcanic activity or large meteor impacts______wh
Scientists believe that either volcanic activity or large meteor impacts______wh
游客
2025-06-11
24
管理
问题
Scientists believe that either volcanic activity or large meteor impacts______what led to the extinction of the dinosaurs.
选项
A、is
B、has been
C、are being
D、are
答案
D
解析
that从句“that…dinosaurs”的谓语动词空缺,空格前的主语为either A or B(A或B中任一的)结构,动词应与B(large meteor impacts)保持单复数一致,故动词的复数形式(C)和(D)为备选答案。根据上下文语义,此处意为“火山活动或流星冲撞导致了恐龙的灭绝”,因此用于表示当前状态的一般现在时(D)are为正确答案。(C)are being为现在进行时,表示现在正在进行的动作,与上下文语义不符。作为参考,what从句“what…dinosaurs”是充当be动词are的补语的名词性从句。
转载请注明原文地址:https://www.tihaiku.com/zcyy/4114341.html
相关试题推荐
Thescientistsare______analyzingtheresultsoftheirexperimenttomakesuret
Accordingtosomespecialists,thenumberofearthquakescausedbyvolcanicacti
Whatisthewoman’sproblem?[originaltext]W:You’llneverbelievewhathappened
Whatarethespeakersdiscussing?[originaltext](Woman)Ican’tbelievethetrou
[originaltext]Wherearetheattendees?(A)Intheconferenceroom,Ibelieve.(
[originaltext]Wherearetheattendees?(A)Intheconferenceroom,Ibelieve.(
[originaltext]Wherearetheattendees?(A)Intheconferenceroom,Ibelieve.(
[originaltext]Wherearetheattendees?(A)Intheconferenceroom,Ibelieve.(
Whyisthecompanylayingsomanypeopleoff?[originaltext]M:Ican’tbelievet
Whatwillthemandotomorrow?[br][originaltext]M:Ican’tbelievethis,but
随机试题
MEMOTO:AllStaffFROM:NormaNguyen,product-d
Itis(necessary)thatthe(customs)(ofall)nations(mustberespected).A、nece
How’sthisforunintendedconsequences?Someofthebiggestbeneficiaries(受惠
NarratorListentopartofaconversationbetweenastudentandaprofessor.Now
Thestudentsinouruniversityeach______anEnglishdictionary.Thatistosay,
WHO21世纪人人享有卫生保健中指出,要扭转几大流行病的上升趋势,以下哪些属于上
下列业务流程容易导致内部控制失效的是:A、从企业外部结转来的结算凭证直接送交财会
护理的核心和永恒的主题是( )。A.管理 B.教育 C.计划 D.协调
(2018年11月)容易受人员的水平和经验的局限,出现定额偏高、偏低的现象,
(2018年真题)甲、乙两公司签署协议共同收购丙上市公司,当甲、乙两公司共同拥有
最新回复
(
0
)