单项选择题

Which of the following is TRUE

A．A pain can only be caused by physical harm.
B．Some people are complaining of a pain which does not exist.
C．A pain can be caused by psychogenic factors.
D．Educated people do not complain of nonexistent pain.

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单项选择题

As soon as person gets threshold pains , he should _______.

A．telephone the doctor immediately
B．first relieve the stress and tension which cause the pains
C．wait to let the pains reach a certain point
D．take pain-killer

单项选择题

According to the passage, the proper way towards a pain is _______.

A．taking different medicines
B．paying no attention to it
C．visiting famous physicians
D．none of the above