按条件f对关系R进行选择，其关系代数表达式为______
A、R|X|RC
暂无解析
Nora:Howlonghasthisbookshopbeeninbusiness?
Michel:______1982.
Believeitornot,Idontliketheway____hespoketome.
Writing:
“Traditionandmodernizationareincompatible.Onemustchoosebetweenthem”.Towhatdegreedoyouagreewiththisstatement?Writeanessayofabout400words.
Inthefirstpartofyouressayyoushouldstateclearlyyourmainargument,andinthesecondpartyoushouldsupportyourargumentwithappropriatedetails.Inthelastpartyoushouldbringwhatyouhavewrittentoanaturalconclusionormakeasummary.
Youshouldsupplyanappropriatetitleforyouressay.
Markswillbeawardedforcontent,organization,grammarandappropriateness.Failuretofollowtheaboveinstructionsmayresultinalossofmarks.
Tom____ofhiswifehowshehadmetherfriend.
Withonelegbrokeninthatcaraccident,hecannotevenwalk,____run.
