72. (28363-!-item-!-188;#058&003615)
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.
(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
这题答案是D，用平行很容易就选到正确答案了，
但想和大家讨论的是
so that和to v的逻辑主语
我的理解是
(D) plant beds designed to produce
这里的designed是修饰语，to produce在这里是不表目的的to V
所以produce的逻辑主语是seeds
>>这里我是用A2说 S+V+O+ 不表目的to v 时，to v逻辑主语为最靠近名词
如果用Dustin的方法to v往前找动词is propagated的主词是Brocolli，
单复数错误，句意上好像也不正确
不知道我的方法是不是哪里错了？
(C) Broccoli is propagated by seeds (sown....beds designed) so that
括号内是seeds的修饰语
so that根据语意逻辑主语应该抓到seeds
谢谢！

to produce应该是表目的修饰designed,而被designed应该是plant bed才对