2.a and three sevenths are reciprocal. The decimal unit of A is 1/3, and it has seven such decimal units.
3.5 hours and 45 minutes = 5.75 hours
4, a rope cut off a quarter of the total length, just cut off two-thirds of the meter. This rope was originally 8/3 meters long, and there are 2 meters left.
Yunnan college entrance examination 3+/kloc-0+2 refers to the new college entrance examination scheme in Yunnan. The reform of college