题目内容：

根据短文内容完成短文后的任务。

Did you know that tea, the most popular drink in the world (after water), was an accidental( 意外的 ) invention? Many people believe that tea was first drunk about 5000 years ago. It is said that a Chinese ruler ( A ) Shen Nong was the first to discover tea as a drink. One day Shen Nong was boiling drinking water over an open fire. Some leaves from a tea plant fell into the water and remained there（ B） some time. ( C )It produced a nice smell so he tasted the brown water. It was quite delicious, and so, one of the world’s favorite drinks was invented.

It is believed that tea was brought to Korea and Japan during the 6th and 7th centuries.( D ) In England, tea didn’t appear until around 1660, but in less than 100 years, it had become the national drink. The tea trade from China to Western countries took place in the 19th century. This helped to spread the popularity of tea and the tea plant to more places around the world. Even though many people now know about tea culture, the Chinese are without doubt the ones who best understand the nature of tea.

1.在文中(A)和（B）的空白处分别填入适当的词_______, __________

2.文中划线部分（C ）指代的是：_________________

3.将文中划线部分（D ）改写为：In England, tea ________ ________around 1660.

4.从文中找出两个修饰tea的形容词：______________, _______

5.从文中找出能说明本文中心大意的单词或短语：_______________