第三代移动通信业务简称为3G,中国移动3G技术为TD-SCDMA,中国电话3G技术为(),中国联通3G技术为()。
参考答案:CDMA2000;WCDMA
The road conditions there turned out to be very good, _____ was more than we could expect. [ ]
A. it
B. what
C. which
D. that