Stamp collectors have paid $16,800 for ______.
B) twelve Two Penny Blues
C) one One Penny Orange-Red
D) fourteen One Penny Orange-Reds
Compared with the modem speed the broadband technology can transmit data ______.
B) much more faster
C) at a high speed
D) within a second
How much does a user pay if he has broadband technology installed?
B) It depends on the times of dial-up.
C) He pays at a fixed monthly rate.
D) He pays a lot of money.
个人赛羽毛球
According to the passage, the southern part of the Yunnan-Guizhou Plateau_____.
B) is hot in the day and cold in the night
C) is cold in winter but hot in summer
D) is neither very hot nor very cold
what did she do in Gull Lake Biological Station?
She worked as_____