题目

Bruce ______ watches TV or listens to the radio, so he knows nothing about it.A.seldom B.sometimes C.usually D.often 答案:【答案】A【解析】句意:布鲁斯很少看电视和听收音机,所以他对它一无所知。本题考查频度副词。seldom很少,sometimes有时,usually经常,often经常。根据so he knows nothing about it.可知,他对此一无所知,因此“很少”看电视和听收音机,故选A。已知:如图,AC平分∠DAB,∠1=∠2,填定下列空白:∵AC平分∠DAB(已知)∴∠1=______(角平分线的定义)∵∠1=∠2∴∠2=______(等量代换)∴AB∥______(内错角相等,两直线平行)
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