【单选题】Mike failed to finish his homework on time, so he tried to avoid _______ his teacher.
【单选题】He tried to avoid ______ my questions in class.
【单选题】在送出境旅游团时,待旅游团( )才可离开。
【单选题】在送出境旅游团时,待旅游团()后,地陪才可离开。
【简答题】在送出境旅游团时,待旅游团( )后,地陪才可离开。
【单选题】已知四棱锥 的底面是边长为6的正方形,侧棱 底面 ,且 ,则该四棱锥的体积是( )
【单选题】已知正四棱锥 的侧棱长与底面边长都相等, 是 的中点, 则 所成的角的余弦值为
【单选题】He tried to avoid ___ my question.
【单选题】He tried to avoid________my questions in class.
【判断题】在社交场所,可按照先尊后卑或先近后远的顺序依次递送名片。( )