GRE Reading Comprehension: ETS-GRE阅读ETS - N3YF2DZ33F9750837

The author mentions the work of "Harold Edgerton" in order to provide an example of A. how a controlled ambivalence toward photography's means can produce outstanding pictures B. how the content of photographs has changed from the nineteenth century to the twentieth C. the popularity of high-speed photography in the twentieth century D. the relationship between photographic originality and technology E. the primacy of formal beauty over emotional content