BSC内切换，BSC需要建立与新的（）间的链路。
A.MSC
B.MS
C.BSC
D.BTS
参考答案：D
刘邓大军，(中国远征军，察哈尔民众抗日同盟军)
My father smoke heavily, but now he doesn't smoke any more. [ ]
A. use to
B. was used to
C. used to
D. was used
