Many plants contain nicotine, a powerful neurotoxin that is particularly harmful to insects.However, pipe tobacco contain a higher concentration of nicotine than most other plants.

• 这里面要特别关注的是有两个非常难的学科，一个是刑法，一个是行政法，刑法是整个司法考试里面考察最有难度，命题最有水平的一个学科。