A-A+
A．Because it serves only a few specialties.B．B
问题详情
A．Because it serves only a few specialties.
B．Because it"s too crowded.
C．Because it"s too costly.
D．Because the service is too slow.
参考答案
正确答案：D
解析：选项都是原因。本题是因果题。从Well，you can，but the service isn't as fast．可以知道原因。
