問題詳情
8 The introduction of radio created a new opportunity and by the end of the 1920s, advertising had establisheditself in radio to such a(n) ....... that advertisers were producing many of their own programs.
(A) amount
(B) extent
(C) range
(D) volume
參考答案
答案：B
難度：適中0.461538
統計：A(5),B(6),C(1),D(0),E(0)