单项选择题 在X连锁遗传中，女性的致病基因只能从母亲传来，将来传给女儿，不存在从男性向男性的传递，称为交叉遗传。 A、正确 B、错误

单项选择题 注册会计师有义务对其在专业服务过程中获得的有关客户的信息予以保密，保密期限截止到提供专业服务终止后。

单项选择题 The theory of the relationship between balance of payment and exchange rates that deals with the size of a nation's expenditures is called A、the absorption approach. B、the elasticities approach. C、the Marshall Lerner condition. D、 the exchange rate condition.