9. Everybody______ in the hall where they were welcomed by the secretary. A. assemble B. accumulated C. piled D. joined
accumulate 积累gather 收集(到一起)，收割(庄稼)collect 收集(带有某种目的的收集)
pile 堆到一起compile 汇编，编辑pilgrim 圣徒，朝圣者analog 类比，类似物analogy 类推