阅读，阅读下列文章，回答问题。 Health experts have warned for many years that cigarette-smoking can lead to heart disease, cancer and other medical problems. And officials say disease caused directly by smoking kill at least three hundred and twenty thousand Americans each year. But smokers still find it rather difficult to stop .The tobacco industry says 40 million Americans continue to smoke cigarette . The American Cancer Society wants to change this. Every year the group organizes a national Non-smoking Day in order to get people to give up cigarette. On the Non-smoking Day the organization is asking all smokers to stop smoking at least for 24 hours .The Cancer Society hopes this will lead many people to give up smoking completely .On that day the Cancer society officers will give telephone call advice on how to stop smoking. Some others also can call a special telephone to hear recorder messages by doctors. Some factories will offer their workers candy or chewing gum to help them to keep from smoking. Some companies are offering special presents and low prizes to people who sign an agreement to stop smoking. And Americans who don’t smoke are being asked to help just one person who is smoking during the 24-hour campaign. 小题1:How many Americans die from smoking each year ? ﹙不超过4个单词﹚ . 小题2:Who set the Non-smoking Day ? ﹙不超过4个单词﹚ . 小题3:What is the purpose of the Non-smoking Day ?﹙不超过7个单词﹚ .