What tone would you use if you were reading the following excerpt to your class? Why would you choose that tone? What words make you choose that tone? A tiny pest just south of the U. S. border with a taste for budding citrus trees has state agriculture officials and growers on high alert. Its arrival could mean doomsday for an industry that was worth $1.8 billion in California last year, they say. In recent weeks, the Asian citrus psyllid, an insect the size of a pea that can carry a rapidly spreading disease dubbed "greening," inched closer to California's southern border.