He, a Nobelist, made great to researching in this area.
A. encouragements
B. constitutions
C. breakthrough
D. contributions
网友回答
A. encouragements
B. constitutions
C. breakthrough
(答案→)D. contributions
解析：名词辨析。A鼓励；B 宪法;章程,法规；C突破；D贡献；make contributions to对…做出贡献；