单选题：2009年，该市旅行社营业成本占所有旅游部门营业总成本的比重约为：

题目内容：

2009年，该市旅行社营业成本占所有旅游部门营业总成本的比重约为： A．65%
B．66%
C．67%
D．68%

参考答案：

答案解析：

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