单项选择题

Good lighting in factories leads to greater comfort, higher ______ and productivity.

A．work
B．proficiency
C．craft
D．efficiency
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单项选择题
Please go to ______ to pick up your ID card.
A．third window
B．the window three
C．window third
D．the third window
单项选择题
None of the servants were ______ when Mr. Smith wanted to send a message.
A．available
B．attainable
C．approachable
D．applicable
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