When we see a cigarette box，we'll see “Smoking is harmful to your health” on it. Children are not allowed to smoke by their parents or teachers. But in many countries smoking is becoming a bigger problem for young people. Most smokers start in their teens or earlier.

Some students think smoking is very cool，and they can see many people smoking around them.（A）They want to have a try. "If young people start smoking early，they will probably get addicted（上瘾的）to nicotine（尼古丁）.And it will be very hard to give up later on，"said a professor. A study shows smoking is a problem for many Chinese teens. What can we do to make them stop smoking？

Some people think we can make a law.（B）Teenagers under 18 are not allowed to smoke，or they should be fined. Parents should give up smoking. They can set an example（树立榜样）to their children.

“Every year about four million people die of smoking. And if people keep smoking，the number will（C）increase 10 million a year from now on，"said the World Health Organization. We must learn and tell others about the danger of smoking.

【小题1】找出（A）处划线单词They所指代的内容。
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【小题2】回答问题：What will happen if people start smoking from a young age？
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【小题3】将（B）处划线句子Teenagers under 18 are not allowed to smoke，or they should be fined.译为汉语。
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【小题4】根据上下文，猜测文中（C）处划线单词increase的中文意思。
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【小题5】请从文中找出与We must realize it is dangerous to smoke and try to let others know about it.意思相近的句子。
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