下面那些不属于正式沟通网络的类型（）。
正确答案：C.X式、交叉式D.弯曲式、阶梯式
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单项选择题
In place of reasons, for a profile story, a reporter must find out about the subject’s ________.
In place of reasons, for a profile story, a reporter must find out about the subject’s ________.
A．Recent achievement
B．Values and standards
C．Opinions and thoughts
D．None of the above.