客户办理凭证正式挂失,无密账户需经网点_____授权后方可办理。(五级、四级)
参考答案：综合柜员
平行四边形的两组对边分别______且______；平行四边形的两组对角分别______；两邻角______；平行四边形的对角线______；平行四边形的面积＝底边长×______．
Snow is rare in this area. You can hardly see any snow, ________ it is winter.
A．ever since
B．now that
C．even though
D．even so
