______ his boring speech for over an hour, the speaker waited for applause from the audience.
A. [A] Before
B. [B] Behind
C. [C] After
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为了提高货物订单的处理速度，减轻作业强度，在货物拣选时采用一种（），它能自动引导作业人员进行拣选作业，而且是不需特别训练，即能立即上岗作业。
A. 电子票签技术
B. 自动识别技术
C. EDI技术
D. GIS
John wanted to buy his girlfriend a gift because they would marry the next day.
A. [A] Right.
B. [B] Wrong.
C. [C] Doesn't Say.
— Why ______ with her — She won't change her idea.
A. [A] to argue
B. [B] argue
C. [C] argues
Johnson had a toothache,______
A. [A] didn't he
B. [B] hadn't he
C. [C] did he
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