67、To help counteract the adverse effects of trout stocking on the amphibian populations in certain mountain lakes, biologists are recommending cutting back on trout stocking on the part of some states and even their being removed from some popular fishing lakes.
　　(A) cutting back on trout stocking on the part of some states and even their being removed
　　(B) cutting back on trout stocking on the part of some states and even that they remove them
　　(C) that trout stocking be cut back in some states and they even remove the trout
　　(D) that some states cut back on trout stocking and even their being removed
　　(E) that some states cut back on trout stocking and even remove the trout
　　原文意思：
　　为了消除一个东西的负面影响，生物学家建议 cut back 一个东西并且 remove 一个东西
　　题目分析：
　　原文体现出一个并列关系， 就是 cut back 一个东西并且 remove 一个东西， A 前面用 cutting后面用 their being removed，这两个动作都是 states 发出的，但是前面用主动后面用被动，不符合并列关系，干掉。B 前面用 cutting 后面用 that，前后不对应。C 前面用被动后面用主动，不太好，干掉。D 前面用主动后面用被动，不好，干掉。E 前后都用主动，并且cut back 和 remove 发起者保持一致，符合并列关系，留着。