单项选择题
A. Athletic and recreational. B. Food and transportation. C. Bookstore and post office. D. Medical and audio-visual(视听的).
A. a map B. a paper airplane C. an atom D. a light bulb
A. when he succeeded in comedies and history plays B. after he had developed his skill in tragedy C. before he wrote comedies and history plays D. when he was no longer young