求解PREP的题

54. 27343

Unlike using spices for cooking, in medicinal usage they are taken in large quantities in order to treat particular maladies.

A.  unlike cooing with spices, taking spices for medicinal use is done

B,  In cooking, small quantities of spices are used, whereas in medicinal usage spices are taken

C  In cooking, the usage of spices is in small quantities, whereas in medicinal usage they are taken

我选的是C, 可是为什么答案是B呢,我觉得C 的两个USAGE才对称呢,而B中关于USE的词性并不一样啊

80. 28763

Children's programming was once limited to a few hours a week, but now there are at least four cable networks dedicated entirely to shows produced specifically for children.

划线句子就是正确选项,但是我想知道电缆网是怎么被动的DEDICATED的, BUT后面的句子我不太会翻译,谁能帮我解释一下?

B的in medical usage是一伙儿的 表示在医药用途上 真正和small quantities of spices比较的是usage后面的spices

而且如果usage在B的从句中作为主语 那也应该是medical usage of spices...

还有版主下的小规矩 讨论问题时主题最好打完整的题号 比如prep-2-54 以后的CDers可以搜索到了

不是被动 是过去式 主动

但是现在却有4个有线电视台完全奉献（dedicated）去播放专门为孩子们设计的shows

up