Do you completely understand your teenagers who are between 13to 19？They may live a happy and meaningful life on condition that you know what changes they are undergoing．

The teenage life is full of happiness，sadness，enjoyment and it can he interesting too．This is because in the teenage life a teenager is subjected to physical growth，and hormonal changes．They may be in a stage of conflict like undergoing puppy love．This is only a normal part of life．

Teenagers should enjoy life by making friends with peers in healthy activities such as camping，picnic，swimming and so on．Through friends，a teenager learns to joke，Iaugh and play to release stress and tension．By making friends，the teenager learns to sweeten his or her joys and even eases the bitterness of life's downtime．

Many teenngers are very conscious of their physical outlook．It is at this part of their life that beauty strikes as the main self-image．They love to follow up with the latest trends for dressing and hairstyle．Some girls and boys go on a crash diet to slim down in order to look attractive．However，making up is not a must for their good image．

Parents tend to play a role in a teenager's iife．They like to control their freedom and have a say on what the teenagers do．Therefore，teenagers have cases of disagreements，disputes，quarrels and even runaways from homes among some teenage girls．To avoid this，parents should be more in their teenager's shoes．

There are also negative problems that may pop out during a teenage life．Some teenagers are easily affected by the mass media and the people around them．They may be involved in violent behavior，drugs taking，smoking，drinking and so on．Others tend to let off their anger by destroying public property．There will be more harm than good if nothing is done．

46．Why are teenagers'life full of ups and downs？___

A．They usually undergo puppy love．

B．They have a variable character．

C．They are t