ＧＷＤ１７－１８

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.

比较几个选项中C是最可行的一个，A 和B不平行，D 前半句不成句子，E 无主句。

C 不是很順眼，但是要想表达两个并行的原因C还是最佳的，没有毛病；另外，C符合标准的动名词的复合结构，只不过感觉不好，英语中有类似的表达。

其实Ａ的平行是对的．Ｃ中的ＷＩＴＨ的修饰有问题，而不是感觉的问题

Q3:

Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people now using their mobile phones to make calls across a wide region at night and on weekends, when numerous wireless companies provide unlimited airtime for a relatively small monthly fee.

1. Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people



2. As the cost of wireless service plummeted in the last year and as mobile phones became increasingly common, many people



3. In the last year, with the cost of wireless service plummeting, and mobile phones have become increasingly common, there are many people



4. With the cost of wireless service plummeting in the last year and mobile phones becoming increasingly common, many people are



5. While the cost of wireless service has plummeted in the last year and mobile phones are increasingly common, many people are

这道题中的ＷＩＴＨ的用法是不行的．

这题不是选D吗？

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。

Q3:

Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people now using their mobile phones to make calls across a wide region at night and on weekends, when numerous wireless companies provide unlimited airtime for a relatively small monthly fee.

1. Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people
   

   
   

2. As the cost of wireless service plummeted in the last year and as mobile phones became increasingly common, many people
   

   
   

3. In the last year, with the cost of wireless service plummeting, and mobile phones have become increasingly common, there are many people
   

   
   

4. With the cost of wireless service plummeting in the last year and mobile phones becoming increasingly common, many people are
   

   
   

5. While the cost of wireless service has plummeted in the last year and mobile phones are increasingly common, many people are

这道题中的ＷＩＴＨ的用法是不行的．

这题选D 把   are using.....