问题补充：
Young people should beto believe that all races are equal.
A. looked up
B. brought in
C. brought up
D. looked in
答案：
A. looked up
B. brought in
(答案→)C. brought up
D. looked in
解析：句意为：应当教育年轻人相信各种族是平等的。bring up养育；look up抬头看，查找；bring in提出，引入；look in(顺便)看望，照(镜子)。
