Mencius believed that the reason man is different from animals is
man is good.
A. that; that
B. why; because
C. why; that
D. which; that
网友回答
A. that; that
B. why; because
(答案→)C. why; that
D. which; that
解析：考查定语从句和表语从句。the reason是先行词，在定从 man is different from animals中作原因状语，用why引导； man is good是表语从句，且句子不缺成分，要用that引导。所以选C。