Most Brazilians get along well with each other, _________ they are from different races(种族), including Americans, European settlers, and Africans,.

A．although

B．as a result

C．since

D．unless

如果受审核方是获国家产品免检企业，审核员在审核时（）

A.可以直接使用评奖时得到的证据

B.可以不进行文件初审

C.可以减少审核人日数

D.都不可以