Most Brazilians get along well with each other they are from different races(种族) includ

问题补充：

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

答案：

(答案→)A. although

B. as a result

C. since

D. unless

解析：句意：大部分巴西人彼此相处融洽，尽管他们来自不同的种族，包括美国人，欧洲人非洲人。A尽管B结果是C自从D除非，根据句意，故选A。