A-A+
A．About every four minutes.B．About every five
问题详情
A．About every four minutes.
B．About every five minutes,
C．About every six minutes.
D．About every seven minutes.
参考答案
正确答案：C
解析：How often do the trains come at this time of the day?这个时间列车约六分钟一班．因此应选C。
