【题目】This unjust _______ of people on the basis of skin color was challenged.
A.determinationB.adaptationC.separationD.submission
在线课程【答案】C
【解析】
考查名词词义辨析。句意：这种以肤色为基础的不公正的种族隔离受到了挑战。A. determination决心；B. adaptation适应；C. separation隔离，分离；D. submission投降，提交。结合句意表示“分离”应用separation。故选C。