单选题
Children from an {{U}}obscure{{/U}} family have to make greater efforts to climb the social ladder.
A. unknown
B. prominent
C. controversial.
D. rural
A
B
C
D
【正确答案】
A
【答案解析】
[解析] obscure:无名的,暗淡的,模糊的,不容易理解的;unknown:无人知晓的,没名气的;prominent:著名的,明显的,突出的;controversial:有争议的;rural:农村的
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