6、eoutD.brokeoff解析 考查break短语的辨析。breakup解散;分手;breakdown出故障;breakout(战争、火灾等的爆发);breakoff停顿;中断。由语境可知B项正确。答案 B7.________theextremelyhotweather,wecontinuedhavingclasses.A.ThankstoB.InadditiontoC.IndefenceofD.Regardlessof解析 考查介词短语的辨析。thanksto多亏了;幸亏;inadditionto除……之外;indefenceof保护;regardlessof不管;不顾。答案 D