单项选择题

The people in the office suddenly started working because________.

A．they saw a stranger in the office
B．their morning break was ended
C．no one wanted to talk to Marie
D．the boss was about to arrive
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单项选择题
From the passage we know the buyer pays more attention to _____________.
A．the size of a container
B．a container with attractive picture
C．a well-designed container
D．a plain container with low cost
单项选择题
The author' s attitude towards applied bionics is _____________.
A．critical
B．approving
C．objective
D．questioning
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