playing sports,the students should warm up for 15 to 30 minutes.When playing sports,they should know the rules to avoid injuries(免受伤).For example,in soccer,they should go after the ball rather than the player.This way,they won't hurt others.What do other countries do to keep students...
However,many students who have problems won't go for advice or help.Some think they will look stupid if they go to see a doctor.Others don't want to talk about their secrets.In order to solve the teenagers' problems,here is some advice. Talk to your parents or teachers often. Take pa...