Question

Do you know Nelson Mandela, _______ was the first black president of South Africa.

A．which

B．that

C．who

D．whose

Answer 1

C               

             
试题分析：考查定语从句。句意：你知道南非第一位黑人总统曼德拉吗？ _______ was the first black president of South Africa是 Nelson Mandela,是定语从句，先行词是人，故可以用which或者that,因为前面有逗号，故是非限制性定语从句，故选C项。        
考点 : 考查定语从句。