仔细阅读对话，选择恰当的答语

仔细阅读对话，选择恰当的答语。

　　What would you do if a stranger gave you some medicine and he said it would keep you slim or help you do well in exams? Would you take it?

　　Many middle school students have learned to keep themselves safe by saying "no". 1.Drugs are dangerous to your health!

　　Because most of teens don't know much about drugs, they might want to try them. Liu, 16, was a good student before trying drugs. 2.. He decided to have a try. After taking drugs only once, he found it very hard to stop. Liu began to spend all his time and money on drugs. Soon, he stopped going to school and started stealing (偷). 3..　

　　In China, taking drugs is becoming a big problem for teens. According to a survey, about one million people in China are using illegal drugs now, and about 74% of them are young people.

4.

　　Drugs are dangerous. Never try them, even if you're curious! It is the most important for you to keep safe and healthy.

5. According to a survey, about 　　　 young people in China are using illegal drugs now.

Martin is an American boy. He is eight years old. His parents   41  _ five years ago and he is now living with his grandmother in New York.

　　One morning,  Jimmy ,  one of his classmates, came to his home with an exercises book in his hand. Jimmy lives in a house not far from Martin's. They often go to school together.

　　"Would you help me with this maths problem?" Jimmy said as soon as he came into the room. "It's too hard for me and I can't work it out."

　　"Let me try, " Martin said. "I   42  it isn't too hard for me. "

　　Martin tried his best but he couldn't work it out,   43   .

　　"If we had a small computer,  all the problems would be  44   for us to do. " Jimmy said.

　　"A small computer . . . , " Martin thought for a minute,  then he said, "I've got an idea. We can   45  one in a shop. "

　　"A computer is very   46   ,  and we don’t have enough money. "

　　"That's OK, " said Martin. "We can ask the new president (总统)   47  some money. He said he would help anyone in trouble. I' m sure he will help us. He is very rich, you know."

　　So they decided to write a letter to the new president. Soon the letter was finished and they hurried to the post office.

　　In front of the post office stood a small box. They   48   the letter into the box carefully and went home happily.

The next morning, they    49   the post office on their way to school. They found   50  ,  the box was not a post box but trash-box (果皮箱).