首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
(Over) (the past) few years, medical researchers (are searching) for a means (to control) AIDS virus
(Over) (the past) few years, medical researchers (are searching) for a means (to control) AIDS virus
admin
2008-11-13
61
问题
(Over) (the past) few years, medical researchers (are searching) for a means (to control) AIDS virus
选项
A、Over
B、the past
C、are searching
D、to control
答案
A
解析
应改为have been searching。根据前后句意应该用现在完成进行时have been searching表示过去发生的事持续到现在。
转载请注明原文地址:https://kaotiyun.com/show/QoJO777K
0
成人本科学位英语
相关试题推荐
OnecountrythatiscertainoftheeffectoffilmsontourismisAustralia.TheTouristOfficeofQueenslandsaythatCrocodile
"TheMeganet"is______.Accordingtothepassage,whatisthedifferencebetween"theMeganet"andInternet?
Change—ortheabilitytoadaptoneselftoachangingenvironment—isessentialtoevolution.Thefarmerwhoselandisrequiredfo
ItwasrecentlyreportedthataJapanesebankerwhohadbeeninseriousfinancialtrouble______suicideinamomentofwilddesp
Followingthesamerulesalltheseyears,theclubis______toanyformofchange.
Whenwomendobecomemanagers,dotheybringadifferentstyleanddifferentskillstothejob?Aretheybetter,orworse,manag
Thetroublewithtelevisionisthatitdiscouragesconcentration.Television’svarietybecomesanarcotic,notastimulus.Itss
Beforethesummerof2000,the54-year-oldJohnHaughomcouldaccomplishjustaboutanythingatwork."Icouldmovemountainsif
Thefirstmentostudythenatureofelectricitycouldnotimaginethattheirexperiments,carriedonbecauseofmereintellectu
Forthispart,youareallowed30minutestowriteacompositiononthetopic:OnOverseasStudy.Youshouldwriteatleast100
随机试题
简述货币资金监控与核算办法的特点。
下列有关慢性肾盂肾炎叙述,正确的是
A.内旋转B.仰伸C.下降D.俯屈E.衔接胎儿双顶径进入骨盆入口平面称
下列关于案件审结期限的表述正确的有()。
关于国际咨询,( )是错误的。
A公司承包了B公司(总承包商)的江南某厂一单位工程:工业循环水系统工程的机电安装。工程内容包括水泵系统的安装调试,室内管道及4km室外直埋管道的组对、焊接、压力试验、防腐处理、安装、覆土隐蔽。室外覆土隐蔽的管道全部采用焊接连接,每50m作为一个节点设一检查
组织要进行有效控制,取得预期的成效,必须遵循的原则有()。
下列有关继承和派生的叙述中,正确的是()。
Writeanessayofabout120wordsaboutWOMENDRIVERinthreeparagraphs.Makingreferencetothefollowingpoints.1.Eviden
FiveCommonMistakesinConversationsandTheirSolutionsI.NotlisteningA.Problem:mostpeople【T1】______【T1】______—waite
最新回复
(
0
)