再问 天山-4-12

For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, Holstein cows are producing an average of 2,275 gallons of mild each per year.

1. providing them with high-energy feed, and milking them regularly, Holstein cows are producing

2. providing them with high-energy feed, and milked regularly, the Holstein cow produces

3. provided with high-energy feed, and milking them regularly, Holstein cows are producing

4. provided with high-energy feed, and milked regularly, the Holstein cow produces

5. provided with high-energy feed, and milked regularly, Holstein cows will produce

看了讨论，A,E似乎有争议，不过似乎倾向于E

恢复原语序为rovided with high-energy feed, and milked regularly, Holstein cows will produce an average of 2,275 gallons of mild each per year for the farmer who takes care to keep them cool.

与keep无关.

那请问Provided with high-energy feed, and milked regularly

为什么and前面要加逗号叻？

那再请斑竹确认下：有可能是这种平行结构么？

keep them cool, (keep them) provided with high energy feed, and (keep them) milked regularly

这样平行结构是很好了，就是不知道keep them provided 这样对不对，我没见过这样的。觉得是不是应该是keep them being provided？这个being也是怪怪的。 这样看平行的话好像A更好一些。

斑竹，这个不对吧，Ａ逻辑上是不对的啊

因为如果是providing的话，就是主动了，（keep them） providing them? 或者(keep...,providing...,and milking them)都是不平行的

乱了乱了，声明一下，我想的不是（keep them） providing them? 或者(keep...,providing...,and milking them)^_^,没有逻辑错误。不过也是wordy and redundant。

关于逗号这个问题,倒没有考虑过.

我感觉这里有没有逗号都行,没区别.