I remember my grandfather said that when he was a child, he only saw bicycles. People have to walk or ride bicycles to far places, which is very slow and laborious, inconvenient and hard. But I said that with cars, light rail, subway, ships, trains, planes and other means of transportation, we can go anywhere conveniently and quickly.
I remember grandma said that when I was a child, I used earthen stoves and firewood to cook at home, and I often burned the rice and smoked the vegetables. The kitchen is full of firewood ash, which is annoying and dirty. But I said, how clean, hygienic, sweet and delicious the food we are cooking with electric cookers and gas stoves.
Dad told me that when he was a child, he didn't have a phone at home, so he could only send letters or run long distances to contact distant relatives. But I said, communication can be developed now. When I want to talk to my cousin in my hometown in Shaanxi, I just need to dial my mobile phone and I can hear his familiar voice immediately. When I want to see my good friends on weekends, I just need to open QQ or WeChat video, and we can meet immediately.
My mother told me that she had classes in the classroom when she was a child. She sweats in summer and shivers in winter. But I also said, how happy we are now. As long as we turn on the air conditioner, we can make the hot summer cool like autumn, the cold winter warm like spring, and live comfortably every day.
The changes that science and technology have brought to our lives are too great, too many to count. I believe that technology will be more developed in the future and will make our life better. Let's cherish our present life, study hard and work hard together, and make contributions to the future science and technology of our motherland when we grow up!