Xiao Ming weighs 35kg, and the length of the math textbook is 2 1cm. The load of a truck is 4t, and a bag of salt weighs 500g. Kobayashi 140cm, desk 7m, 25kg flour per bag. The height of the school building is 13m, so the answer is: kg, cm, ton, gram, cm, decimeter, kg, meter.