Young people can have problems with their minds. Some students become worried because they have to study very hard and they have too much homework to do every day. Others have trouble getting on well with people like their teachers and classmates.

Liu Wei, a junior 2 student from Shandong, could not understand his teacher and was doing badly in his lessons. He became so worried about it that he started to cut his finger with a knife.

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(投毒) the water in the drinking machine(饮水机) in their dormitory.

A recent report says about 18% of teenagers have mental(精神上的) 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(愚蠢) 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.

66. 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

67. 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.

68. 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

69.  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 stupid

C. they can’t afford it                   D. they don’t think their problems are serious

70. What should we do if we have problems with our minds?

A. We should argue with others.            B. We should eat more. 

C. We should talk to others often.          D. We should cut our fingers.

Can dolphins talk? Maybe they can’t talk with words, but they talk with sounds. They show their feelings with sounds.
Dolphins travel in a group. We call a group of fish a “school”. They don’t study, but they travel together.
Dolphins are mammals（哺乳动物）, not fish, but they swim together in a school. Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or sad or afraid. They say“welcome”when a dolphin comes back to the school. They talk when they play.
They make a few sounds above water. They make many more sounds under water. People can’t hear these sounds because they are very, very high. Scientists make tapes of the sounds and study them.
Sometimes people catch a dolphin for a large aquarium.(An aquarium is a zoo for fish.) People can watch the dolphins in a show. Dolphins don’t like to be away from their school in an aquarium. They are sad and lonely.
There are many stories about dolphins. They help people. Sometimes they save somebody’s life. Dolphin meat is good, but people don’t like to kill them. They say that dolphins bring good luck. Many people believe this.
【小题1】A school of dolphins means_____.