(A) barrier n.障礙物
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The police officers put up a ______ between the protestors and the pedestrians.
警察放置一個障礙物在抗議群眾和行人之間。(A) barrier 障礙物(B) barrel 槍管、桶(C) beast 野獸(D) blocks 街區
protestors 抗議群眾/(protest) 反對
pedestrians 行人
5. The police officers put up a ______ b..-阿摩線上測驗