Did she want see it again?[ ]
A.to
B./
C.of
D.at
答案：A
After the break, the lecturer went on to talk ______ about the new academic concept. [ ]
A. at length
B. in all
C. in turn
D. at most
下列为B类地址的是（）
A.160.52.63.8
B.200.36.54.9
C.80.54.2.6
D.112.26.9.4
