单项选择题

What kind of training is optional for a licensed doctor

A．Two years of a premedical course.
B．Four years of medical course.
C．Two years of residency in a hospital.
D．One year or more of a specialty course.
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单项选择题
According to the passage, if a company wants to win in the market, it should ______.
A．carry out reform policies
B．adopt advanced technology
C．compete with other enterprises
D．use the Internet as its marketing tool
单项选择题
What is the largest benefit the Net has brought to the management of companies
A．It has brought the largest profits to them.
B．It has greatly improved their management.
C．It has helped cut short their human resources.
D．It has significantly changed their image.
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