单选题
______ have contributed the most to the telecom revenue growth.
A、
The four major local and foreign telecom operators
B、
The four major foreign telecom operators
C、
The four telecom operators owned by the government.
【正确答案】
C
【答案解析】
第一段末句提到这个问题为four major-state owned operators，“state-owned”，“国有的，国营的”，与C符合。
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