单选题A Because they have a driving license.B Because they have received special training.C Because the traffic conditions in London are good.D Because the traffic system of the city is not very complex.

题目内容（请给出正确答案）

单选题

A

Because they have a driving license.

B

Because they have received special training.

C

Because the traffic conditions in London are good.

D

Because the traffic system of the city is not very complex.

参考答案

参考解析

解析：
细节题。根据“the reasons London taxi drivers are so efficient is that they all have gone through a very tough training period”可以判断答案为B。