阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
English as a Foreign Language
Who taught you to speak English? Your parents, while you were a young child? Your teachers at school? Perhaps even the BBC as a grown-up. Whoever it was, somehow you have developed an understanding of what is rapidly becoming a truly global language.