27. In societies where social roles are determined, boys usually copy the behavior of their fathers, and girls _____ of their mothers.
A. that B. those C. one D. the ones
答：A
此题考that等些的指代.这里that= the behavior
one= a +可数名词单数,BD表示复数名词.
另外还应知道并列句中,后一分句常省略与前分句中相同的谓语动词,这里为copy