加快建设电动汽车充换电设施，建成（）高速公路快充网络。
A.“五纵六横一环”
B.“六纵六横两环”
C.“六纵五横两环”
D.“五纵五横一环”
参考答案：B
—Daddy, can you buy me a new MP3 when you go to Beijing?
—You ______ get one if you are admitted to a key middle school.
A．shall
B．could
C．may
D．can
生育保险如何缴费？
