单项选择题

A full ______ of all the reasons for and against closing the railway has begun.

A．explosion
B．exploration
C．exploitation
D．explanation
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单项选择题
The company's training plan was designed to help the employees to improve their work habits and ______.
A．proficiency
B．sufficiency
C．insufficiency
D．efficiency
单项选择题
Although the end of the term was close ______, Jim had not completed all of the projects he had hoped to finish.
A．on hand
B．by hand
C．at hand
D．in hand
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