社会治理的特点包括（）。

What do some schools do in order to save on transportation costs?A．They choose to shorten the school week.B．They stop giving drivers good training.C．They eliminate routes or take the shortest routes.D．They switch to buses which are more fuel-efficient. 点击查看答案

The purpose of the University of Illinois experiment was to figure out______.A．schoolchildren's cognitive developmentB．the fitness levels of today's school childrenC．the effect of exercise on children's brainsD．the structure of immature human brains 点击查看答案