语音和数据ARPU趋势（）
A.语音ARPU不断下降，
B.语音ARPU不断上升，
C.数据ARPU逐年上升，
D.数据ARPU逐年下降
参考答案：A, C
My best friend Tim is studying in ______ school now, I can't play with him. I really miss him. [ ]
A. other
B. another
C. others
D. the other
国内特快专递邮件按邮局所负的补偿责任分为保价特快专递邮件和（）特快专递邮件。
