【单选题】我国第一所公立幼儿园于1903年建立在( )。
【简答题】我国第一所公立幼儿园于1903年建立在()。
【简答题】He was about to tell me the secret someone patted him on the shoulder.A.asB.untilC.whileD.whenHe was about to tell me the secret____someone patted him on the shoulder. A.as B.until C.while D.when
【单选题】He was about to tell me the matter _______someone stopped him
【单选题】如果异方差关于解释变量的的函数形式未知,在修正异方差的方法中,常可采用的方法是( )