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
24
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
WilliamShakespeare(1564-1616)wrotemanyplaysandpoemswhichareknown
Let’sforgetourdifferencesandseekcommonground,______we?A、willB、shallC、
IntotheUnknownTheWorldHasNeverSeenP
[originaltext]Thedangerfromearthquakesisveryreal—theyareprobablyth
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
由著名报刊学者戈公振创办的我国第一份报纸摄影附刊是()A.《申报》 B.《生
阻塞性睡眠呼吸暂停低通气综合征患者具有:A.上气道塌陷 B.睡眠过程中呼吸气流
商业银行资产负债管理的基本管理原则中,()是商业银行稳健经营的基础。A.安
治疗支气管哮喘,应首先考虑的药物是( )。A.肾上腺素 B.去甲肾上腺素
已包括在公路工程概、预算定额中的“其他工程费”有()A、夜间施工增加费B、施工
最新回复
(
0
)