TOEFL Reading: ETS-TOEFL阅读机经 - 6SDUB8L9Y5739895L$

Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. A. Alarge percentage of Earth's living things were killed along with the dinosaurs. B. Seventy-five percent of all species, including 75 percent of dinosaur species, were victims of a single mass extinction. C. In the extinction that eliminated the dinosaurs, up to 99 percent of all living things and 75 percent of all species were wiped out. D. Dinosaurs were the most famous victims of a mass extinction, but there have also been mass extinctions that wiped out most of Earth's other species.