问题
单项选择题
Customers may also be permitted to ______ their current accounts for a short period in anticipation of a credit item coming in.
A．overextend
B．overdraw
C．overvalue
D．overpay
答案
参考答案：B
解析： overdraw透支。A．overextend货款过多；C．overvalue估价过高；D．overpay多付款。