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
2024-01-13
45
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/3358202.html
相关试题推荐
LincolnthoughtitwaswrongtokeepNegroes_________slaves.A、inB、asC、forD、at
Iaskedthesoldierwhathewasin______________life.A、ordinaryB、dailyC、common
Whatisthegreatestpossiblecommondivisoroftwodifferentpositiveintegers
Twopositiveintegersaandbhaveonlyonecommondivisor,ifb/a+2=18/7,then
WhatisthenumberofintegersthatarecommontobothsetSandsetT?(1)The
Whatistheleastcommondenominatorof2/7,1/5and2/3?A、35B、75C、105D、95E、
Whatisthegreatestcommondivisorofpositiveintegersmandn?(1)misaprim
Untilrecentlyitwasthoughtthatinkusedbeforethesixteenthcenturydidnot
EachoftheacademicjournalsThoughtandErgohasareviewcommitteetoprevent
4.Eoundincaveswiththebonesofaustralopithecines,whicharcthoughtbyso
随机试题
Forshopaholics,thepost-【D1】______periodmeansonlyonething:sales.Acr
Itwasn’tagoodthing;______,itwasahugemistake.A、onthewholeB、onthec
WomenintheUnitedStatesandinmanyothercountries【B1】______inagrowi
牛仔舞(Jive)典型的美国舞蹈,又称()。A.踢踏舞 B.街舞 C.吉特
模拟电话信号语音最大频率约为4KHz,语音系统采用128级量化,又由于在传输时,
《房屋建筑与装饰工程工程量计算规范》中规定的措施项目,不包括()。A.脚手架工
基金管理公司为单一客户办理特定资产管理业务时,客户委托的初始资产不得低于人民币(
哪一类水、电解质失衡最容易发生休克A、高渗性脱水 B、等渗性脱水 C、水中毒
Hewasinhospitalforsixmonths.Hefel
当前我国集体协商和三方协商机制的共同特点包括( )。A.都是由政府主导的 B
最新回复
(
0
)