You have been in a new school for months and have made new friends and met new teachers. Describe one of them who gives you the most unforgetable impression and using your experience ,explain why and how. Limit your writing to about 120 words.

豆蔻药材的主要化学成分是（）

A.挥发油，油中主要为桉油精

B.皂苷、黄酮、有机酸

C.环烯醚萜苷类成分

D.挥发油、香豆素、黄酮类

E.木脂素、挥发油、有机酸