单选题 In some countries, ______ is called "equality" does not really mean equal rights for all people.
A. which B. that C. what D. one

【正确答案】 C
【答案解析】[解析] 结构识别
从结构上看,这是含有主语从句的复合句;但主语从句缺少主语,因此选连接代词 what,C为答案。