【单选题】
当前我国的______主要以科研和教育为目的,从事非经营性的活动。___
A. 金桥信息网(GBNet)
B. 中国公用计算机网(ChinaNet)
C. 中科院网络(CSTNet)
D. 中国教育和科研网(CERNET)
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答案
D
解析
暂无解析
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