题目内容：
从国民经济整体来看，贸易活动中存在的角色是（ ）。
参考答案：
答案解析：
多选题：从国民经济整体来看，贸易活动中存在的角色是（ ）。
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- 题目类型：多选题
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Copernicus developed his theory__________．
Copernicus developed his theory__________．
金融市场可以分为（ ）。
金融市场可以分为（ ）。
I__________have been there，but I__________not find the time．
I__________have been there，but I__________not find the time．
This took place in the__________．
This took place in the__________．
Tom suggested I should open the bottle__________．
Tom suggested I should open the bottle__________．