TOEFL Listening: TPO-TOEFL阅读TPO - 93L5B435Q06J39D9N$

According to paragraph 3, all of the following were true of the iron industry in Great Britain during the 1800s EXCEPT: A. Steam-driven bellows were used to produce raw iron. B. By the 1850s Britain was the world's largest producer of iron. C. Steam-powered mills made it possible to produce iron of different shapes and sizes. D. Greater demand for higher-quality iron increased its price.