阅读下面短文，在空白处填入适当的内容（1个单词）或括号内单词的正确形式（不超过3个单词）。

    Tea is the leaf of a plant which grows widely in China.It is our national drink and tea﹣drinking is one of the daily activities of Chinese people.In China， （1）　　 a visitor comes，he is served with a cup of tea.

    Tea﹣drinking has （2）　　 history of over 4，000 years.According to Tea Classics by Lu Yu，tea was discovered by Shen Nong，and became a drink in the State of Lu because of Zhou Gong.According to a legend，Shen Nong tasted hundreds of wild plants （3）　　 （stop） people from eating poisonous （有毒的） plants.One day，he was poisoned by an unknown plant but （4）　　 （save） by eating leaves of an evergreen plant.Later，people called the leaves that saved his life "Cha （tea）".

    Drinking tea does good to people in many ways.When people are tired，they feel better after drinking a cup of tea.Compared with people who don't drink tea，tea drinkers are likely to enjoy a （5）　　 （long） life.It is said that drinking tea can also help fat people lose weight.