Don't get into trouble, it won't do any good to the exam. I suggest you do more real questions and take three books as positive solutions. Don't worry about whether this ivory is fruit or not.

Also, if we really want to ponder, ivory should belong to natural fruit, which is the product of animals, such as wool and eggs.

Things have three characteristics: they exist outside the human body and can be actually controlled or dominated by people; Can meet people's social needs. Ivory obviously meets these conditions and belongs to the category of civil law.