阅读理解。 Did you know that tea, the most popular drink in the world, was invented by accident? Although tea wasn't brought to the western world until 1610, this beverage (饮料) was discovered over three thousand years before that.   According to an ancient Chinese legend c传说), the emperor Shen Nong discovered tea when he was boiling drinking water over an open fire.  Some leaves from a nearby bush fell into the water and remained there for some time. The emperor noticed that the leaves in the water produced a pleasant smell. Later he decided to taste the hot mixture. It was quite delicious.  And in this way, one of the world's favorite drinks was invented. 根据短文内容，回答下列问题。 1.  When was tea invented? ___________________________ 2.  Who was tea invented by? ___________________________ 3.   How was it invented? ___________________________ 4.  When was tea brought to the western world? ___________________________ 5.What is the article about? ___________________________