直肠癌患者出血，粪便颜色为（）
A.蓝绿色
B.紫色
C.红色
D.黄色
E.黑色
参考答案：C
Though my answer is different from ______, I still think ______ is right.[ ]
A. their; my
B. their; mine
C. theirs; mine
D. theirs; my
