OG2 阅读 Q49

Choice D is the best answer. In lines 67-70（“Whereas...the world”）, the author provides evidence that, while the researchers’ findings suggest the internal waves in the Luzon Strait are influenced by the region’s topography, the findings may “help researchers understand how internal waves are generated in other places around the world.” This statement suggests that all internal waves may be caused by some similar factors.
Choices A, B, and C are incorrect because they do not provide the best evidence that internal waves are caused by similar factors but influenced by the distinct topographies of different regions. Rather, choices A, B, and C reference general information about internal waves or focus solely on those that occur in the Luzon Strait.