单选题
The functions of institutions of higher education in the US are ______.
A、
research and teaching
B、
teaching and degree awarding
C、
professional training, teaching and public service
D、
teaching, research and public service
【正确答案】
D
【答案解析】
[解析] 美国的高等教育的职能包括教学、研究和公共服务。
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