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GWD TN19的一道题
In the 1820’s, anthracite coalfields opened in eastern Pennsylvania, and when canals and eventually railroads reached into the region, there were substantial supplies of coal that was exported to the nation’s growing mills, forges, factories, and railways.
A. when canals and eventually railroads reached into the region, there were substantial supplies of coal that was
B. once canals and eventually railroads reaching into the region, there were substantial supplies of coal having been
C. with canals and eventually railroads reaching into the region, there had been substantial supplies of coal
D. canals and eventually railroads reached into the region, with substantial supplies of coal being
E. as canals and eventually railroads reached into the region, substantial supplies of coal were
正确答案是E
我想问的是标红的and 前后对应的平行内容是什么？
为什么这个and 前面还有个逗号？
按照正确答案：In the 1820’s, anthracite coalfields opened in eastern Pennsylvania, and as canals and eventually railroads reached into the region, substantial supplies of coal were exported to the nation’s growing mills, forges, factories, and railways.
是不是应该改成这样满足前后平行？
In the 1820’s, as anthracite coalfields opened in eastern Pennsylvania, and as canals and eventually railroads reached into the region, substantial supplies of coal were exported to the nation’s growing mills, forges, factories, and railways.
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发表于 2018-10-8 22:04:03
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