下载文档原格式
英语演讲ppt主题随着社会的发展，各国日益关注的科学问题。
人类已经被从各种科学技术成果和正在享受这些好处。
科学和技术的努力，我们现在生活得舒适，方便与空调装修房子，洗衣机和电视机等由于科学和技术，我们可以吃新鲜蔬菜全年交通运输技术。
科学和技术的支持下，我们可以旅行堂在一秒钟的距离上飞机，火车和汽车。
科学和技术的支持下，我们甚至可以更紧密的沟通交流。
如果说20世纪最伟大的科学和科技成果的互联网，那么19世纪最伟大的科学和技术在球场上的成就应该电话。
Especially, after the mobile telephone appears, communication becomes easier , If people go out for business far away from their homes, the telephone can shorten the distance between them and their families. Thus they will get comfort whenever they are homesick or they get into trouble. With the help of the telephone, people can keep in touch with anyone at any time for urgent help. All in all, the telephone is so helpful that we can say that nowadays we can not live without the telephone in our daily life. Science can also further improve the phone’s performance，so for people to create better conditions for the exchange.毫无疑问，电话使事情在很多方面容易。
