For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, LACE w:st="on">HolsteinLACE> 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, LACE w:st="on">HolsteinLACE> cows are producing

2. providing them with high-energy feed, and milked regularly, the LACE w:st="on">HolsteinLACE> cow produces

3. provided with high-energy feed, and milking them regularly, LACE w:st="on">HolsteinLACE> cows are producing

4. provided with high-energy feed, and milked regularly, the LACE w:st="on">HolsteinLACE> cow produces

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

参考答案：E

我觉得A好，providing---和milking---都作takes care to---的表现（伴随动作），特别从high和regularly就能看出农民伯伯对奶牛的情谊了，呵呵

keep---cool是使什么保持健康的意思吧

可是这个句子的主语是奶牛不是农民伯伯啊~

对爱护奶牛的农民伯伯来说，被喂了高热量种子而且被有规律地挤奶的奶牛，每年可以平均产出这么多奶。