标题: 一道gwd题，求解！！ [打印本页] 作者: richygogogo 时间: 2016-10-29 10:56 标题: 一道gwd题，求解！！ By the same techniques used for genetically enhancing plants, making them disease- or pest-resistant, researchers have been able to increase the amount of protein in potatoes, sweet potatoes, and tobacco.
A.By the same techniques used for genetically enhancing plants, making them
B.With the same techniques to genetically enhance plants, so that they are
C.Employing the same techniques used to genetically enhance plants so that they are
D.Employing the same techniques to genetically enhance plants, which makes them
E.Employing the same techniques for genetically enhancing plants that make them
这道题我想问b选项，with...., so that...., researchers have been able to.....这是一句完整的话吗？so that是一个句子了，后面的researchers又是一个句子，是这样吗？？