...they can no longer see the rankings (排名) after each exam...
根据On July 24,2021,an important document(文件) called "Double Reduction"("双减") policy was carried out by the Chinese government.可知,这个文件是在2021年7月24日实施的。故填On July 24,2021。(2)No,they don't.推理判断题。根据Some parents worry that the policy (政策)...