NAVLE（北美执业兽医考题）Day 539

单选题，正确答案是100分，非正确答案为0分，Good Luck！

Warts are caused by which one of the following types of organisms?疣是以下哪种病原导致的？Find out the answer by clicking on one of the listed choices. Good luck!点击列出的选项找出答案，祝大家好运

A – Virus 病毒