TOEFL Listening: TPO-TOEFL阅读TPO - 6TDQ7C4I9F1Q3704N$

According to paragraph 8, one of the adaptations of fast-swimming fishes that might be used to improve the performance of ships is these fishes' ability to A. swim directly through eddies B. make efficient use of water currents C. cover great distances without stopping D. gain speed by forcing water past their gills