英语课外活动演讲稿正文 第一篇：英语课外活动演讲稿Now,i want to introduce the Earthquake distribution to you.First,lets see the world earthquake distribution. There are three major seismic zone around the world：Circum-Pacific seismic belt，Eurasian seismic zone，Mid-ocean ridge seismic belt.The first seismic zone is in the Pacific plate and the Americas plate, Eurasian plate, the demise of the Indian Ocean plate boundary.The second zone is in Asia and Europe and African plates, the demise of the Indian Ocean
