【单选题】Iron production was revolutionized in the early eighteenth century when coke was first used instead of charcoal(木炭)for refining iron ore. Previously the poor quality of the iron had restricted its use...
A.
Advances in iron processing in the eighteenth and nineteenth centuries.
B.
The effects of the Industrial Revolution on traditional architectural styles.
C.
Advantages of stone and timber over steel as building materials.