题目内容：
Which of the following is NOT true? ( )
A．"Sir" and "Madam" are used more often in America than in England. B．People often use "Mr", "Mrs" or "Ms" before the first names of those people who they don't know very well.
C．"Pal" and "mate" are usually only used between men.
D．While addressing friends, people just use their first names
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