五月四日，高三年级一班和二班之间将进行一次有关环保问题的演讲比赛（a talk show on environment protection）。此前，二班邀请清华大学的dr li做相关内容的报告。假定你是二班的班长，请你草拟一个有关报告会的口头通知。
注意：
1.内容应包括提示及表格内的全部要点；
2.词数在100左右；
3.开头已为你写好。
报告内容:近些年北京的环境问题及已取得的进步
地点:教学楼三楼会议厅（auditorium）
时间:四月三十日，星期三下午 2：00
目的:帮助大家收集信息，为演讲做好准备
参加人员:全班同学
其他安排:会后议论
may i have your attention, please
as you know, our class will have a talk show on environment protection with class one on may 4th. before it takes place, we
…
one possible version:
may i have your attention, please
as you know, our class will have a talk show on environment protection with class one on may 4th.before it takes place, we will invite dr li from qinghua university to give us a talk on the environment problem and he will also tell us about the improvement in