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题目内容
（国家开放大学婚姻家庭法学）
Which of the following is NOT the guideline for writing memos and emails include?
A. Restricting message to one main idea.
B.Composing a short clear subject line.
C.Using heading in short messages.
A. Restricting message to one main idea.
B.Composing a short clear subject line.
C.Using heading in short messages.
参考答案
