首页
登录
职称英语
Once common throughout the Western plains, black-footed ferrets are thought to h
Once common throughout the Western plains, black-footed ferrets are thought to h
游客
2025-02-25
7
管理
问题
Once common throughout the Western plains,
black-footed ferrets are thought to have declined in number
as a result of the poisoning of prairie dogs, their prey.
选项
A、black-footed ferrets are thought to have declined in number
B、it is thought that the decline in number of black-footed ferrets is
C、the decline in the number of black-footed ferrets is thought of as
D、that black-footed ferrets have declined in their numbers is thought to be
E、the numbers of the black-footed ferrets are thought to have declined as
答案
A
解析
句首是once引导的时间状语的省略形式,由此省略形式决定了B、C、D、E(it,the decline和the numbers)均不能作主句的主语,而主句仅能由black—footed ferrets担任。只有A项符合此要求,其中用了动词不定式的完成体,表明decline是发生在think之前的动作。
转载请注明原文地址:https://tihaiku.com/zcyy/3972764.html
相关试题推荐
Noneoftheattemptstospecifythecausesofcrimeexplainswhymostofthepeo
By1914,tenofthewesternstateshadgrantedwomentherighttovote,butonly
UnliketheircounterpartsinotherWesterndemocracies,theAmericanlabormovem
UnlikethatoftheNativeAmericansofBritishColumbia,thePlains,andtheSou
Acommondisabilityintestpilotsishearingimpairment,aconsequenceofsitti
Inthemostcommonprocedureforharvestingforagecropssuchasalfalfa,asmuc
DuringthenineteenthcenturyEmilyEdenandFannyParksjourneyedthroughoutIn
Tanco,aleathermanufacturer,useslargequantitiesofcommonsalttopreserve
ThedrymountainrangesofthewesternUnitedStatescontainrocksdatingback4
ThedrymountainrangesofthewesternUnitedStatescontainrocksdatingback4
随机试题
DothefollowingstatementsagreewiththeinformationgiveninReadingPassage
Theeconomymaybetroubled,butoneareaisthriving:socialmedia.Theybeg
以下关于软件缺陷的叙述中,不正确的是( )。A.需要对软件缺陷划分严重性,但不
关于报告分部的确定,下列说法中正确的有( )。 Ⅰ.企业应以业务分部或地区分
有关肝动脉插管化疗的患者护理叙述不正确的是A.严格无菌操作 B.若出现发热,应
【电力安全生产及防护】36、室内什么情况工作应悬挂“止步,高压危险!”的标示牌?
某矩形框筒,平面尺寸如图所示,总高度102m,承受水平力q=20kN/m,框筒截
函数1/x展开成(x-2)的幂级数是:
中国银监会的监管理念是( )。A.管业务、管风险、管内控 B.管法人、管风险
下列家庭生命周期中,高风险证券投资占比最少的阶段是()。A.家庭成长期 B.
最新回复
(
0
)