单项选择题

A．To help Mary study.
B．To take a walk with Mary.
C．To invite Mary for sightseeing.
D．To study anthropology.
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单项选择题
What can be learned about the on-line doctors' visits
A．They are a quite promising business.
B．They are funded by the local government.
C．They are welcomed by all the patients.
D．They are very much under experimentation.
单项选择题
Of the following people, who are not involved in the program
A．Cisco System employees.
B．Advice nurses in the clinic.
C．Doctors at three local hospitals.
D．Oracle at three local hospitals.
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