My brother is three years than I.A. elder; elderB. older; older C. elder; olderD. older;

问题补充：

My brother is three years than I.

A. elder; elder

B. older; older

C. elder; older

D. older; elder

答案：

A. elder; elder

B. older; older

(答案→)C. elder; older

D. older; elder

解析：句意：我哥哥比我大三岁。elder，older是old的两种比较级形式，都有“年长的”意思 (old还有“较旧的”意思)。但是二者用法不同。elder通常于名词前作定语用，而不能用在be动词或系动词后作表语,而older作“年长的”解时，则正好与之相反，它用作表语，而不用作定语形容词。所以选C。