885-3-15现在分词放句首的修饰

seaskyangs

15. By installing special electric pumps, farmers’ houses could be heated by the warmth from cows’ milk, according to one agricultural engineer.(A) farmers’ houses could be heated by the warmth from cows’ milk, according to one agricultural engineer
(B) the warmth from cows’ milk could be used by farmers to heat their houses, according to one agricultural engineer
(C) one agricultural engineer reports that farmers could use the warmth from cows’ milk to heat their houses
(D) farmers, according to one agricultural engineer, could use the warmth from cows’ milk to heat their houses
(E) one agricultural engineer reports that farmers’ houses could be heated by the warmth from cows’ milk

答案：D，为什么主语用工程师不行呢？

这样的情况，我碰到过几次，发现在现在分词做主语，可有几个选项都出现了是人，我就不懂该如何判断了？

谢谢。

丁香花儿

Personally, I think the logic meaning is the key in this case.

1. special electric pumps ---- one engineer, not as good as farmers
2. by installing ------- one engineer reports, it's illogic. probably, one engineer finds or suggests that... is better.

D is logic and no ambiguous.

AJingJing

一是不agricultural engineer不可能替那么多的FARMERS安装。从意思上还应该是FARMERS自己安装，这件事情的结果由agricultural engineer来报告。
二是意思上变成了：“通过为FARMERS安装。。。，工程师报告”
逻辑荒谬。

seaskyangs

逻辑意思太重要了。

谢谢

ninihao

除了逻辑意思，by installing, the engineer reports明显的逻辑混乱，C中的

their指代也不是非常清楚明。