Life in the FutureUnit 6Warming up•What is our life like at present? What do you use to light up when you do your lessons in the evening?We use lights to light up.Do you know what people used in the ancient time?They used fire made by wood to light up. What did people use to light up 200 years ago...

时间:2024-12-07 09:58栏目:中学教育