求救，PS不小心关掉了怎么恢复？

没关系，重新建一个或是往里面添加原来的内容就可以、原来的内家如下：在“记事本”上选择“文件”—“打开”，或者直接按快捷键ctrl+o，在“打开”选项中找到Hosts文件的目录C:\Windows\System32\drivers\etc，选择右下角的“所有文件”，就可以看到Hosts文件了。 4.#Copyright(c)1993-1999MicrosoftCorp.##ThisisasampleHOSTSfileusedbyMicrosoftTCP/IPforWindows.##ThisfilecontainsthemappingsofIPaddressestohostnames.Each#entryshouldbekeptonanindividualline.TheIPaddressshould#beplacedinthefirstcolumnfollowedbythecorrespondinghostname.#TheIPaddressandthehostnameshouldbeseparatedbyatleastone#space.##Additionally,comments(suchasthese)maybeinsertedonindividual#linesorfollowingthemachinenamedenotedbya'#'symbol.##Forexample:##102.54.94.97rhino.acme.com#sourceserver#38.25.63.10x.acme.com#xclienthost127.0.0.1localhost127.0.0.1lmlicenses.wip4.adobe.com127.0.0.1lm.licenses.adobe.com127.0.0.1activate.adobe.com127.0.0.1practivate.adobe.com127.0.0.1ereg.adobe.com127.0.0.1activate.wip3.adobe.com127.0.0.1wip3.adobe.com127.0.0.13dns-3.adobe.com127.0.0.13dns-2.adobe.com127.0.0.1adobe-dns.adobe.com127.0.0.1adobe-dns-2.adobe.com127.0.0.1adobe-dns-3.adobe.com127.0.0.1ereg.wip3.adobe.com127.0.0.1activate-sea.adobe.com127.0.0.1wwis-dubc1-vip60.adobe.com127.0.0.1activate-sjc0.adobe.com