問題詳情
13. For more than two centuries, economic opportunity and the prospect of upward mobility haveformed the bedrock on which the American dream is based.
(A) assumption
(B) procedure
(C) basis
(D) innovation
(E) evidence
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)