Pan Yichen, good job! A 14-year-old boy passed the intersection, finding something wrong with the traffic light. Then he turned the light into the right direction.

上周五，新一届政府称，3月12日即将生效的钢铁和铝关税只是总统的热身而已，接下来就是汽车行业。特朗普总统可能会上调轿车和SUV这类进口轻型车的关税，其当前税率仅为车价的2.5%（北美之外地区产皮卡车的关税税率一直以来都是25%）。当被问及美国将于何时全面上调乘用车的关税时，特朗普称将在数周后就运作此事。

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...