第2题: [填空题]What is the sign of a smile A smile is a strong sign of a friendly and ______ and a willingness to communicate. 参考答案:open attitude 答案解析:[听力原文] 11-15 A smile is a strong sign of a friendly and open attitude and a willingness to comm
第3题:[多选题]二次风系统分布正确的是( ) A.前墙有上二次风口8个 B. 前下二次风口7个 C.后墙有上二次风口8个 D.后二次风口7个 E.左侧墙有2个上二次风口 F.右侧墙有2个上二次风口 参考答案:ABCDEF