1．(2010•湖南)listening to loud music at rock concerts________caused hearing loss in some teenagers. a．is b．are c．has d．have [解析]考查主谓一致。动名词、动词不定式、主语从句作主语时，谓语要用单数。由句意“在摇滚音乐会上听声音很大的音乐已对一些青少年的听力造成了影响”可知c项正确。 [答案]c 2．(2010•陕西)it is reported that many a new house________at present in the disaster area. a．are being built b．were being built c．was being built d．is being built [解析]考查主谓一致和时态。“many a＋单数名词”作主语，谓语要用单数形式；由时间状语at present可知，要用现在进行时态；house和build之间是被动关系，所以用现在进行时态的被动语态。句意：据报道，目前受灾地区正在建造许多新房子。 [答案]d 3．(2010•四川)such poets as shakespeare________ widely read，of whose works，however，some________ difficult to understand. a．are；are b．is；is
