17 By the same techniques used for genetically enhancing plants, making them disease-or-pest resistant, researcher 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
A选择是错在making them 的修饰歧义吗?By 与分词的区别在哪里?
With 的用法有什么特殊的说法?B错在哪里?
C选择中So that 中的they 是否有指代歧义?会不会从逻辑上指代后面的researcher? Which and that 的指代问题有哪位高手可以指点一下?that 可以不就近指代吗?如果可以选项E是否对呢? |