Another student, Xiao Li from a university in Shanghai, got on badly with his roommate, Xiao Huang. He killed his roommate Xiao Huang by poisoning the water in the drinking machine in their dormitory.

A recent report says about 18% of teenagers have mental problems. Their troubles include

being worried and very unhappy, and having problems in learning and getting on with people. 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.

　　Liang Hong, an expert on teenagers from Beijing Hospital has the following advice for teenagers:

Talk to your parents or teachers often.

Take part in group activities and play sports.

Go to see a doctor if you feel unhappy or unwell.

24. Liu Wei cut his finger with a knife because .

A. he was afraid of his teacher B. his finger was badly hurt

C. he didn't look cool D. he was so worried about his studies

25. What was Xiao Li's problem?

A. He did badly in his lessons. B. He had a bad headache. C. He had trouble getting on well with his roommate.

D. He didn't afford to pay for his education.

26. If a student often feels worried and unhappy, he or she may have .

A. mental problems B. a cold C. no family D. no money

27. Many students who have problems won't go to see a doctor because .

A. they don't think doctors can help them

B. they think they will look foolish

C. they can't afford it

D. they don't think their problems are serious

People all need friends because nobody wants to be lonely and a friend can help you in good and bad times. You've made friends since childhood, but you still don't know who your true friends are. Here are some signs to tell you if your friend is a true friend:

Always honest

Honesty is important to keep a relationship alive. A true friend always tells you the truth. It may be hard sometimes but lying can destroy a friendship. It is important that your friend speaks honestly and never makes up stories.

There are always periods in you r life when you have problems or difficulties. A true friend