34、Broccoli thrives in moderate to cool climates and propagated by seeds, either sown directly in the field or in plant beds designed for producing transplants.
　　(A) propagated by seeds, either sown directly in the field or in plant beds designed for producing
　　(B) propagated by seeds, sown either directly in the field or sown in plant beds designed so as to produce
　　(C) is propagated by seeds either sown directly in the field or in plant beds designed so that they produce
　　(D) is propagated by seeds sown either directly in the field or in plant beds designed to produce
　　(E) is propagated by seeds, sown either directly in the field or sown in plant beds designed for producing
　　原文意思：
　　说一个东西 thrives 并且 propagated，说着在 field 里面 sown 里了或者在 plant beds 里面也 sown 了。
　　题目分析：
　　原文体现出来了两个并列关系：一个是 thrives 和 propagated 的并列，这个并列要想满足后面就必须 is 否则后面就和前面的 thrives 这个动词不对应了，我们先把 AB 干掉。CDE 用后面那个并列， 就是在 field 里和在 plant beds 里 sown 并列， 前后两个地方并列的只有 D。

　　GMAT语法每日一题详解汇总(8月）>>>>