TOEFL Reading: ETS-TOEFL阅读机经 - 7S403BM53PJQ3O2ML$

Which of the sentences below 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. Although most established industries continued operating with existing technologies, some novel products required the development of new technologies. B. In the past, technological change had been unimportant in most established industries because the products that customers wanted could be produced using existing technologies. C. In most established industries, technological change played a role only when it made possible the production of novel products that attracted new customers. D. Most established industries attracted new customers by developing new products based on existing technologies rather than by applying new technologies.