当我们端坐在电视机前收看丰富多彩的节目时,当我们操作简单按键控制中央空调时,当我们在寒冷的冬天里津津有味地吃着西瓜时……我们可曾想过:是什么给我们的生活带来这么大的变化?科学技术一天天地发展,科技产品一代代地替换,人们的生活变得异彩纷呈。电灯的发明让地球各地的人们渐渐告别了黑暗,飞机的发明让人们远距离的出行更加快速、便捷,电话的出现、普及则让我们只用言语便可沟通世界……而在中 When we sit in front of the TV to watch a variety of programs, when we operate a simple button to control the central air conditioning, when we relish eating watermelon in the cold winter ... ... we may have thought: What gives us Bring about such a big change in life? Science and technology development day by day, science and technology products to replace generations, people's lives have become colorful. The invention of the electric lamp made the people all over the world gradually bid farewell to the darkness. The invention of the airplane enabled people to travel more quickly and conveniently at a long distance. The emergence of telephone and popularization allowed us to communicate the world in words only.