In December Obama was .A. elected the President of the USAB. selected the President

问题补充：

In December , Obama was .

A. elected the President of the USA

B. selected the President of the USA

C. elected President of the USA

D. selected President of the USA

答案：

A. elected the President of the USA

B. selected the President of the USA

(答案→)C. elected President of the USA

D. selected President of the USA

解析：考查词义辨析以及冠词。elect “选举”, select “精挑细选”；表示头衔、官职的名词前不用冠词。故选C句意：12月奥巴马被选为美国总统。