听力原文：Helen Keller lost her sight and hearing because of a sickness at the age of 19 mo

nths, even before she had learned to talk. For the first seven years of her life she was like a wild animal. She wanted to communicate with other people. Finally her parents sent for a teacher, Miss Ann Sullican. Ann taught her how to learn about the world through touch and smell and feeling, and eventually she became a teacher, a writer and lecturer.

What is true according to the passage？

A．Helen was born blind and deaf.

B．A sickness caused her to be blind and deaf.

C．Helen lost her sight and hearing at the age of 19.