She is my aunt’s daughter. So she is my .A. sisterB. cousinC. brotherD. friends

问题补充：

She is my aunt’s daughter. So she is my .

A. sister

B. cousin

C. brother

D. friends

答案：

A. sister

(答案→)B. cousin

C. brother

D. friends

解析：句意：她是我的阿姨的女儿。所以她是我的表姐。根据常识知她和她姑姑的女儿是表姐妹关系，所以选B。