In experiments,an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs,but an injection from sinistral eggs does not influence dextral eggs.
在实验中,用取自右旋卵子的细胞质进行的注射,可改变左旋卵子的模式;用取自左旋卵子的细胞质进行的注射却不能影响到右旋卵子。
难句类型:省略、易淆词
解释:本句与上一句来自于同一篇文章,蜗牛的右旋与左旋,在阅读这篇文章的过程当中,所有同学都在竭尽全力地分清左、右的区别,然而这里的时候,ETS的出题者终于突破了读者的心理防线,彻底地搞混了左右之间的关系。
其实在这里之所以容易搞混,还有一个人为的重要原因,就是这句话使用了大量的省略;方中的changes the pattern of sinisteral eggs后面,实际上省略了一个to dextral,而最后的分句an injection from sinisteral eggs does not influencee dextral eggs,则是an injection of cytoplasm from sinisteral eggs does not influencee the pattern of dextral eggs的省略形式。
意群训练:In experiments,an injection of cytoplasm from dextral eggs changes the pattern of sinistral eggs,but an injection from sinistral eggs does not influence dextral eggs.
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