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

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热门试题

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.

单项选择题

What are the author's present feelings about his or her children

A．Their behavior is improving.
B．They are approaching a difficult age.
C．They don't spend enough time at home.
D．They are choosing strange friends.