京广铁路客运专线(简称“京广高铁”)是以客运为主的高速铁路,它北起北京,南至广州,全程2998千米,是世界上营运里程最长的高速铁路,如图为京广高铁的示意图,读图完成下列问题:
物理老师上网冲浪用的电子邮箱是:yangyoo2003@gmail.com,这表示这个电子邮箱属于 ____ ,邮箱的服务器名叫 ____ .
He had hoped to have an opportunity to travel abroad for long. But it was a(n) ______ that he missed it when it came last month.
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