TOEFL Reading: ETS-TOEFL阅读机经 - 5Y61A3YZ1ZIDW5VML$

Which of the following can be inferred about the new technologies mentioned in paragraph 5? A. They were sometimes too expensive to introduce in the workplace. B. They forced laborers to work in more systematic ways. C. They helped to reduce the impact of industrialization on the environment. D. They helped make it possible for industries to reduce the workforce.