单项选择题

A．By desk-top computer terminals.
B．With the help of a librarian.
C．By the old card catalogue system.
D．By the microfiche.
<上一题 目录 下一题>
热门 试题

填空题
In the past, public works was decided by______.
填空题
Economists’ debate has neglected the question of how______.
相关试题