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
答案是C
这题做的时候,就在C和E之间犹豫。
C的不好之处:
(1) techniques后面的used to觉得有些wordy.
(2) They其实有些指代不清。如果将c的后半部分改为句子,应该是:techniques are used to genetically enhance plants so that they are…., they 应该优先指代主语techniques而不是plants。
E的不好之处:
(1) that的指代对象歧义(可能是techniques 或 plants)
(2) them的指代不清。
我对E的理解:
(1) the same…….as(that)更简洁且符合惯用法。
(2) techniques for 是简洁的惯用法。
我对E的不足之处的理解:
(1) 既然有the same的修饰,则that自然应该指代其修饰对象techniques。
(2) 如果(1)成立,则前面只有两个复数,则them应该指代plants。否则,应该用themselves.
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