relation between China and Russia has developed steadily since Vladimir Putin was re-elec

问题补充：

relation between China and Russia has developed steadily since Vladimir Putin was re-elected president.

A. The; the

B. The; /

C. A; the

D. The; a

答案：

A. The; the

B. The; /

C. A; the

D. The; a

解析：普金重新当选总统后中俄关系稳定发展。relation特指中俄之间的关系；表示“正式的、唯一的职务或头衔”的名词在句子中充当表语、同位语、补足语的时候，前面用零冠词。故本题B项正确。