https://online2.tingclass.net/lesson/shi0529/0008/8490/25.mp3
https://image.tingclass.net/statics/js/2012
23. Everybody _____ in the hall where they welcomed by the secretary.
A. assembled B. piled C. joined D. accumulated
assemble (人群)聚集
assembly line 装配线
semblance 外表
resemble 相似，相像
take after 与某人长得像
pile 堆积
compile=put together 编辑，汇编
accumulate 积累
cumulus 积雨云
cumulative 积累的，渐增的
