苏联以前的PPP最高，很多都是免费的，西方不愿意承认罢了。

来源: 腾讯QQ 于 2009-07-24 09:40:16 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.