问题
单项选择题
The word "revolutionary" as used in Line 16 means ______.
A．radical
B．extremist
C．momentous
D．militaristic
答案
参考答案：C
解析：[分析] 词义题型。 Planck announced his findings in 1900，but is was years before the full consequences of his revolutionary quantum theory were recognized，此句意为：普朗克在1900年公布了量子理论，但直到多年后他的划时代(革命性)的量子理论才整体得到承认。A．radical根本的，激进的；B．extremist极端主义(者)；C．momentous重大的，重要的；D．militaristic军国主义的，尚武的，因此 C为正确选项。