quiz

你对世界各地的能源和发电了解多少？共有{{this.items.length}}个选择题。你有30秒的时间回答每个问题。每天都会创建一个新的测验。当前测验是在2小时前创建的。

2005 is a year worth remembering, the wind of web2.0 across the Internet, but, because of too urgent, many people have not yet figured out what is web2.0, you ......