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The rubbish _____ is produced every day is becoming a serious problem in cities around the world.
A.thatB.whoC.whereD.whom
答案:A
试题分析:句意:每一天产生的垃圾正成为全世界城市的一个严重问题。That那;who谁;where哪里; whom谁。先行词rubbish是物,在定语从句中可用关系代词that代替,所以选A。
考点:考查定语从句的关系词。