单项选择题
A. Uncle Sam. B. Big apple. C. Melting pot. D. A Nation on the Wheel.
A. The Star - Spangled Banner B. Forever Uncle Sam C. Country Road D. Starry, Starry Night
A. in the post-WWⅡ era B. in the post-WWⅠ era C. in the post-Cold-war era D. in the post-Vietnam-war era