The writer's attitude toward email can best be described as ______.
A. critical
B. matter-of-fact
C. approving
D. biting
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《秦晋殽之战》中哭师止秦袭郑的人物是()
A. 杞子
B. 蹇叔
C. 原轸
D. 文赢
21th century is a century of telecommuting.
A. Right
B. Wrong
C. Doesn't say
在如图6-1所示的计算机主板中,USB接口位于(4),SATA插槽位于(5)。
A. ②处
B. ③处
C. ④处
D. ⑤处
A.soB.thereforeC.thusD.since
A. so
B. therefore
C. thus
D. since