假如你是李華，你的美國朋友John對我國明代 （Ming Dynasty） 著名醫(yī)學家 （medical scientist） 李時珍很感興趣，寫信向你咨詢。請你根據(jù)以下提示，用英語給他寫封回信，向他介紹李時珍。
    寫作內(nèi)容提示：
    （1）李時珍生于1518年。
    （2）著作中草藥 （Chinese herbs） 總集《本草綱目》，內(nèi)含近2000種中草藥。
    （3）寫作歷時37年，期間他訪民間，走群山，嘗百草，親身作試驗。
    （4）你對他的評價。
                             

【考點】人物介紹．

【答案】As we all know，Li Shizhen was a famous medical scientist in the Ming Dynasty.He was born in 1518.In his life，not only did he call on ordinary people and visit mountains but he also tasted different kinds of herbs and even carried out experiments himself.
By working hard，he wrote a famous book called Bencao Gangmu，which is a collection of Chinese herbs.It includes nearly 2，000 Chinese herbs with millions of Chinese characters.
Li Shizhen  is considered to have  made great contributions to the development of Chinese medicine.