______的发展是第三方物流出现和发展的必要条件。
A.信息技术
B.流通加工技术
C.非生产服务技术
D.社会分工
参考答案:A
Students who pass the test will be ______to the next grade, as has been announced.
A.possessed
B.promoted
C.proposed
D.allowed
宽带移动无线接入技术主要有第3代移动通信(3G)和()
A、GSM
B、CDMA
C、AMPS
D、WLAN