单选题 Scientific evidence from different disciplines demonstrates that in most humans the left hemisphere of the brain controls language.
A. groups of followers B. years
C. countries D. fields of study

【正确答案】 D

【答案解析】[解析] 名词辨析。
disciplines纪律，学科；A．groups of followers追随者团体：B．years年龄，年代：C．countries国家；D．fields of study研究领域；因此选项D为答案。