允许试答次数：1

Attention! It is prohibited to change device while attempting this quiz. Please note that after beginning of quiz attempt any connections to this quiz using other computers, devices and browsers will be blocked. Do not close the browser window until the end of attempt, otherwise you will not be able to complete this quiz.

要尝试这个测验，您需要知道测验密码

时间限制：30 分钟