第3题: [单项选择]The aim of controlled scientific experiments is ______. A. to explain why things happen B. to explain how things happen C. to describe self- evident principles D. to support Aristotelian science 参考答案:B 答案解析:[试题分析] 细节题。通过题干返回原文相对应处可以得到答案。
[详细解答] 见文章最后一句:Modern science was born when Galileo began trying to