Question

President Obama called Mandela____“personal hero” while he was on____visit to South Africa in July, 2013.

A．a; a

B．the; the

C．the; a

D．a; the

Answer 1

A

试题分析：考查冠词用法。不定冠词a/an修饰可数名词单数，表泛指，意为“一个，某个”；定冠词the表特指，意为“这个，那个”。on a visit to sp访问某地，据此排除B、D；call sb sth把某人称作......，这里是泛指“一个个人偶像”，应该用不定冠词a，排除C，故选A。