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

1979年2月，五届全国人大常委会第六次会议根据国务院的提议，通过了将3月12日定为我国植树节的决议，这项决议的意义在于动员全国各族人民积极植树造林，加快绿化祖国和各项林业建设的步伐．将孙中山先生与世长辞之日定为我国植树节，也是为了缅怀孙中山先生的丰功伟绩，象征孙中山先生生前未能实现的遗愿将在新中国实现并且要实现得更好．1981年，在邓小平同志的倡议下，五届人大第四次会议通过了《关于开展全民义务植树运动的决议》．1990年3月12日，邮电部又发行了一套4枚“绿化祖国”邮票，第一枚为“全民义务植树”．
故选D．

One possible version:
May I have your attention, please?
As you know, our class will hold a talk show on environment protection with Class One on May 4th. Before it takes place, we will invite Dr Li from Tsinghua University to give us a talk on the environment problem and he will tell us about the improvement in environment protection in recent years in Beijing.
The report will begin at 2:00 pm on Wednesday, April 30th in the auditorium on the third floor in the classroom building. I’m sure we can get enough information from his talk to make good preparations for the coming talk show. Everyone should be there on time, then listen to the report and make notes at the same time.
By the way, we will have a discussion after the report.
That’s all. Thank you.

本文是命题作文，是一则口头通知，所以首先必须要清楚口头通知的格式。具体到这篇文章，要求学生在写作时应该要包含所有要点，写清楚时间、地点、目的以及人员安排等。因为是口头通知，所以结尾要体现出呼吁大家参与的内容。

（1）例一：用绳纰做成钓丝来钓鱼。例二：钓到足够的鱼来充饥。例三：把剩余的鱼晒干了吃。
（2）例一：种大麦和水稻，获得一个稳定的食物来源。例二：成功驯养山羊，得到了固定的美食。例三：几经失败做成陶器，用来盛故各种食物等。例四：用收获的粮食烘烤面包，改善了自己的饮食。例五：驯化野人，使之成为自己忠实的仆人。例六：找到山坳前的一块平地，搭起帐篷，拥有了临时的安身之所。例七：及时将搁浅船中可用的东西搬到岸边，使之成为今后生活的物质基础。例八：伐倒一棵树，花了两年时间，造成一只独木舟，进行沿岛航行。例九：每天用刀子在方柱上刻一个斫痕，来计算年月日。例十：设法用水手的值夜衣改制了两件背心，用来抵御太阳的照射。例十一：用山羊皮制成帽子、外衣和裤子，用来抵御寒冷。例十二：患病时,咀嚼烟叶，治好了自己的病。（答案不唯一）

my birthday is may fourth

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 environment protection
in recent years in Beijing.
　　The report will begin at 2:00 pm on Wednesday, April
30th in the auditorium on the third floor in the classroom building. I’m sure we
can get enough information from his talk to make good preparations for the
coming talk show. Everyone should be there on time, then listen to the report
and make full notes at the same time.
　　By the way, we will have a discussion after the
report.
　　That’s all. Thank you.

1949年12月23日,中国人民政府政务院正式规定：5月4日为中国青年
http://zhidao.baidu.com/question/52890018.html?fr=ala0