题目

  The people are ______ young workers between the age of twenty and thirty. A. nearlyB. Almost  C. mostlyD. most 答案：C 解析: mostly副词大部分。. 已知：如图，BE是△ABC的外接圆O的直径，CD是△ABC的高，   若CD=6，AD=3，BD=8，则⊙O的直径BE的长为       ．