单项选择题
A.165秒 B.170秒 C.180秒 D.195秒
A.周三 B.周四 C.周五 D.周六
A.8% B.12% C.14% D.16%
A.8 B.10 C.15 D.20
A.25000 B.30000 C.40000 D.45000
A.48 B.52 C.66 D.74
A.100 B.200 C.300 D.400
A.1048 B.1374 C.1764 D.1858
A.4 B.6 C.8 D.10
A.9 B.11 C.15 D.17
A.1.75 B.2.25 C.3.15 D.4.05