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题库 / GMATLA-SC-40
Over the course of the eighteenth century, the average output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore.
Over the course of the eighteenth century, the average output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore.
Over the course of the eighteenth century a tripling in the average output of ironwork was due to the replacement of charcoal by coal for the fuel used in the smelting of iron ore, in addition to several improvements in blowing machinery.
With charcoal's being replaced by coal as the fuel used in the smelting of iron ore and several improvements in blowing machinery, the average output of ironwork tripled over the eighteenth century.
The replacement of charcoal with coal for the fuel used in the smelting of iron ore and several improvements in blowing machinery, the average output of ironwork tripled over the eighteenth century.
Charcoal being replaced by coal as the fuel used in the smelting of iron ore, and several improvements in blowing machinery, which tripled the average output of ironwork over the course of the eighteenth century.
over the eighteenth century副詞位置改變,修飾整句變成修飾 tripled而已
A 平行 詞性作用平行
C With相較because因果表達不清
C: with being replaced and improvements介词短语结构在句首作伴随状语，不是独立主格，没有办法表达出因果的关系。因此相对choice a,b改变了意思；
Right: IN ADDITION TO taxes, death is inevitable.
Right: IN ADDITION TO Munster cheese. I like Swiss.
B中 in addition to 除...之外
A: as a result of several improvements和because coal replaced charcoal as the fuel used in the smelting of iron ore并列。语法上是可以的，因为两者都是原因状语
B: 主干 a tripling was due to X, in addition to Y 改变了意思。在choice a中用and连接两个原因状语说明两个原因的权重是一样的，in addition to的结构中说明Y的重要性低一些
C: with being replaced and improvements介词短语结构在句首作伴随状语，注意不是独立主格，没有办法表达出因果的关系。因此相对choice a,b改变了意思；
D: 句首的名词replacement and improvement作为主句主语average output的同位语，逻辑错误
E: 缺少谓语动词
D选项是没有谓语
which 指代的是several improvement， 但是several improvement 只是triple的一部分，不能代表全部，所以指代不对，排除E
Conveyed meaning:
A tripling WAS over the course of the eighteenth century.
In the OA, over the course of the eighteenth century (introductory prepositional modifier) serves to modify tripled (the verb in the following clause).
Conveyed meaning:
The average output TRIPLED over the course of the eighteenth century.
as a result of引导的介宾 AND because引导的状语从句一起作状语，修饰主句the output tripled。产量三倍，因为……，and 因为……。
B，B/A的区别在于时间状语的修饰对象：A，产量在18世纪3倍，ok；在18世纪，B，3倍的产量是因为……，错误。不是在18世纪因为，而是在18世纪产量3倍。
a tripling was due to A，in addition to B，"in addition to B"类似于as well as的用法，可以做定语也可以做状语修饰句子。
说法有误
c不是独立主格，charcoal's being replaced表述也有问题
choice b, 提取主干 a tripling was due to X, in addition to Y 改变了意思。在choice a中用and连接两个原因状语说明两个原因的权重是一样的，in addition to的结构中说明Y的重要性低一些
choice c, with being replaced and improvements介词短语结构在句首作伴随状语，没有办法表达出因果的关系。因此相对choice a,b改变了意思
choice d, 句首的名词replacement and improvement作为主句主语average output的同位语，逻辑错误
choice e, 缺少谓语动词
同意，'s是所有格结构不是独立主格。如果是独立主格应该要写成With charcoal (being) replaced by coal , being是可以省略的登录 或 注册 后可以参加讨论
此外，with没有表现出因果关系。
B in addition有问题
C错在with不是介词 它是一个独立主格 所以 with没办法包含后面的several improvements 需要一个额外的介词
D前半句就是两个noun连独立主格都不是 不知道想说啥
Ewhich