无忧英语编辑整理 英语四级、英语六级、专业四级、专业八级考试历年真题 听力下载 模拟预测试题下载LESSON THIRTEEN ACERB/ACRI acid acidify acidity acidulate acidulous acrimonious acerbic acrid acrimony exacerbate STRING/STRICT string stringency straight strain strait straiten strangle strangulate stress stretch strict strictness stricture astringency constringe constrain constrained constraint constriction constrictive constrictor distress distressful district overstrain restrain restraint restrict restriction restrictive astringent constrict prestigious stringent STRU/STRUCT structure structural construct construction reconstruct reconstruction construe destroy destruct destructible destruction destructive instruct instruction instructive instructor instrument instrumentality misconstrue misconstruction obstruct obstruction obstructive substructure superstructure deconstruction infrastructure construe instrumental PROP/PROPRI proper property proprietor proprietorship appropriation appropriator expropriation impropriety misappropriate misappropriation appropriate expropriate proprietary propriety TORT/TORS torture torturer tortuous tortoise torment torch contort contortion contortionist distort distortion extortion retort tort extort torsion tortuous VIV victual viand vital vitality vitalize vivacity vivid vivify vivisect devitalize revitalize revive revivification reviviscence survive survival survivor convivial revivify vivacious vivisection SERV serve servant service servility serf serfdom sergeant conserve conservancy conservation conservative conservatory deserve disserve disservice observe observance observation observatory preserve preservation preservative reserve reserved reservation reservoir serviceable servile servitude subservient CLUD/CLUS close closet closure conclude conclusion concl...
