在Outlook Express中能够进行操作的( )
A．撤消发送
B．接收
C．阅读
D．回复
参考答案：B,C,D
枸橼酸铋钾服后可能导致（）
A．黑色大便
B．口干和视力模糊
C．便秘
D．幻觉、定向力障碍
E．疲乏、嗜睡
Last night I was watching some news about the American financial crises(金融危机) on TV _______ the power went off.
A．while
B．as
C．when
D．during
