修辞手法题：这种题目是修辞目的的变体。OG中大多数题目只考察一个词组的修辞目的，而实际考试会对一句话甚至整段话的修辞目的进行考察。一个是考修辞对象，一个是考修辞的手段。
比如说，《Meteorite Impact and Dinosaur Extinction》这篇文章第2题：
2. In paragraph 2, why does the author include the information that dinosaurs had flourished for tens of millions of years and then suddenly disappeared?
To support the claim that the mass extinction at the end of the Cretaceous is the best-documented of the dozen or so mass extinctions in the geological record
To explain why as many as half of the species on Earth at the time are believed to have become extinct at the end of the Cretaceous
To explain why paleontologists have always been intrigued by the mass extinction at the end of the Cretaceous
To provide evidence that an impact can be large enough to disturb the environment of the entire planet and cause an ecological disaster