单项选择题

Benjamin Davis, Jr. was ______.

A．one of black fighter pilots during World War Ⅰ
B．commander of a group of black fighter pilots during World War Ⅱ
C．one of the soldiers who crossed the Delaware with Washington in 1776
D．a scout for Coster and died at the Little Big Horn

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单项选择题

The meaning of the word savoring is ______.

A．demanding
B．commanding
C．assuring
D．enjoying

单项选择题

Why do companies take downsizing

A．Because this is an inevitable tide throughout the world.
B．Because incompetent employees must give their way to new competent ones.
C．Because it is a direct way to reduce cost.
D．Because those employees are too old to work efficiently.