The Commonwealth of Nations is a free association of independent countries that were once colonies of Britain. At present there are ___________ countries within the Commonwealth (1991).
A、30
B、40
C、50
D、60
【正确答案】：C
【题目解析】：英联邦是曾经是英国殖民地的独立国家的自由联合体。目前英联邦有50个国家(1991年)。
