单项选择题

A．for
B．after
C．with
D．go
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单项选择题
Why doesn’t Tom like his job
A．He doesn’t earn very much money.
B．He has to work too many hours.
C．He doesn’t have time for lunch.
D．He sometimes has to work in bad weather.
单项选择题
What is NOT the advantage of the new robots
A．They can perform different tasks.
B．They are easy to reprogram.
C．They increase productivity.
D．They perform a single operation at a time.
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