单项选择题

Which of the following does this passage mainly discuss

A．The application of bionics.
B．The first "open heart" surgery.
C．The development of the artificial heart.
D．The future of applied bionics.
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单项选择题
We can infer from the text that the employees of the enterprise______.
A．would start their work by listening to a joke
B．were cold to newcomers
C．were always punctual for work
D．lacked devotion to the company
单项选择题
The best title for this text would be______.
A．Punctual Like a Clock
B．A Cold Welcome
C．An Unpunctual Manager
D．Better Late Than Never
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