语法与词汇 It was courageous enough for Galileo to advance thefalling object theory developed by Aristotle, theauthoritative Greek scientist.

【正确答案】 D

【答案解析】句意：伽利略足够勇敢，能够推进由权威的希腊科学家亚里士多德所开发的关于物体下降的理论。authoritative有权威的。respected受尊敬的；德高望重的。authentic真实的；可信的。resented愤恨的。automotive汽车的；自动的。