按建筑材料的不同，涵洞可分为砖涵、石涵、混凝土涵及( )。
A．钢筋混凝土涵
B．涵洞
C．砂涵
D．灰土混凝土涵
参考答案：A
Now that we ______ all the money, it's no use turning on me and saying it's all my fault.
A. had lostB. lostC. have lostD. lose
有人说，“对牛弹琴是来讽喻听者的”，你怎么看
