（A） Young people can have problems with their minds. Some students becomes worried because they have to study very hard. Others have trouble getting on well with people like their parents and cla mates. Liu Wei, a junior 2 student from Hefei, could not understand his teacher and was doing badly in his le o . He became so worried about it that he started to cut his finger with a knife. Another student, 14-year-old Yang Fang from Guangzhou, was afraid of exams. She got very worried in one, and when she looked at the exam paper, she couldn’t think of anything to write. A recent report from Jiefang Daily says about 18% of Shanghai teenagers have mental problems. Their troubles include being worried and very unha y, and having problems in learning and getting on with people. Many students who gave 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 Yuezhu, an expert on teenagers from Beijing Anding Ho ital has the following advice for teenagers: Talk to your parents or teachers often. Take part in group activities and play orts. Go to see a doctor if you feel unha y or unwell. 46. The students who often become worried or have trouble getting on with others may have . A. mental problem B. a headache C. knife with them D. no parent 47. Liu Wei cut his finger with a knife because . A. he was afraid of his teacher B. he wanted to frighten his parents C. he was so worried about his studie D. his finger was badly hurt 48. Yang Fang’s problem ha ened when . A. she studied very hard . she had exams C. she talked with her parent D. she thought of something 49. Students who have problems won’t ask others for help because . A. they won’t let others think they are stupid . they don’t think doctors can help them C. they think the problems are not serious D. they have no secrets about others 50. Liang Yuezhu’s advice tell us that . A. it’s u ece ary for them to be with others B. only group activities and orts can help them C. teachers and parents can’t do anything about mental problems D. it’s better for the students who have mental problems to join others.