单项选择题

It is well-known that the retired workers in our country are（）free medical care.

A. entitled to
B. involved in
C. associated with
D. assigned to

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单项选择题

Now many manufacturers build their business reputations by enclosing ______ in the new products in case of damage in shipment or by incorrect operation.

A. categories
B. accessories
C. analogies
D. observatories

单项选择题

They are looking for a （）experienced secretary who is capable of organizing a busy sales office.

A. chartered
B. mature
C. graduated
D. polished

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