(1) 句子结构。
本题句子结构简单，为 there be结构。
(2)选项词义。
A. discharge n.准许离开，出院，退伍；排放；排放物
B. discrimination n.歧视；识别力，鉴赏力
C. disapproval n.不赞同，反对
D. disagreement n.意见不合，分歧，争论；不一致
句子大意为“人们对隔离政策抨击日盛，但并无证据表明官员们对此特别关注”。原题中的segregation意为 “ 隔离；种族隔离”，与选项中的discrimination词义最为接近， 因此选项B 正确。
[知识拓展]
词汇拓展： discrimination 与 segregation。
①discrimination n. the practice of treating sb. or a particular, group in society less fairly than others
e.g. Discrimination by employers on the grounds of race and nationality was illegal.
雇主以种族或国籍为由歧视员工是非法的。
②segregation n. the act or policy of separating people of different races, religions or sexes and treating them in a different way
e.g. The Supreme Court unanimously ruled that racial segregation in schools was unconstitutional.
联邦最高法院一致裁定学校里的种族隔离违反宪法。