单项选择题

He sent me an ______ biography of Theodore Roosevelt which helped me understand American history better.

A．authorized
B．authoritative
C．authoritarian
D．authority
<上一题 目录 下一题>
热门 试题

单项选择题
Since Xerox couldn't work smoothly, he assumed that someone had ______ with it.
A．scampered
B．pampered
C．hampered
D．tampered
单项选择题
The motion of ocean water ______ at different depths below the surface.
A．modifies
B．varies
C．alters
D．differs
相关试题