gwd17-18 讨论讨论

Q18:

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.

我认为C的问题非常多，完全可以排除：

C. 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.

绝对错误：

1) with后面的表达完全可以用主动语气- With coal replacing charcoal

2) by coal as the fuel used in the smelting of iron ore and several improvements in blowing machinery有歧意：by coal as the fuel used in （the smelting of iron ore and several improvements in blowing machinery）——括弧中的可以是一种理解。

GMAT不喜欢形式：

1）with ; 2) being; 3) 非人用's.

而A中，有同学提到Over the course of 冗余，我查了GOOGLE，有这样的表达。我理解是强调过程，并没有绝对错误。后面的result和becaue 可能很不爽，但是不是绝对错误。

a 主要错误是句子不平行啊  as a result of   and because ....

平衡在考试中是重点啊(机警上说的 )