专业、全面、易懂的全领域名词百科

TheWorldWarshelpedchangethemusicindustrybecause.

题型：单选题

选项

A. A.People were required to sing songs.

B. B.Music was used as ways to ease the tension.

C. C.Music companies needed to work with the government.

D. D.The technological development made radios commercially available.

正确答案：D