OE


【Analysis】The first and third blanks are antonyms based on the transition relationship of but. The second blank repeats the previous follow. The title means that it is obvious that geological activities in the 18th century followed these laws, but the fact that geological activities before that also followed these laws makes people feel that it is a revolutionary theory. Choose options ADI for the three blanks. obvious, follow, and revolutionary.

【Sentence Translation】A revolutionary scientific view that emerged in the 18th century was the realization that slow, unstoppable geological changes all follow basic physical and chemical laws. In hindsight, this conclusion seems obvious, but its corollary - that geological changes that occurred in ancient times also followed the same set of laws - was revolutionary for geologists in the 18th and 19th centuries.