【題組】6.The author mentions magnesium in line 14 as an example of a substance that(A)seemed to have ph
Questions 11-22Iron production was revolutionized in the early eighteenth century when coke was firs
【題組】13.According to the passage, iron was NOT used for beams, columns, and girders prior to the earl
【題組】14. Iron replaced stone and timber in the building of bridges because iron was considered(A)more
【題組】19.According to paragraph 3, the architectural significance of the Halle des Machines was its(A)
【題組】20.How did the artistic elite mentioned in the passage react to the buildings at the Paris Exhib
【題組】21.It can be inferred that the delayed use of exposed iron structures in traditional styles of a
【題組】22.The paragraph following the passage most probably discusses(A)the gradual inclusion of expose