求解三道题

mxl186

C? 22. A recent national study of the public schools shows that there are now one microcomputer for every thirty-two pupils, four times as many than there were four years ago.

(A) there are now one microcomputer for every thirty-two pupils, four times as many than there were

(B) there is now one microcomputer for every thirty-two pupils, four times as many than there were

(C) there is now one microcomputer for every thirty-two pupils, four times as many as there were

(D) every thirty-two pupils now have one microcomputer, four times as many than there were

(E) every thirty-two pupils now has one microcomputer, four times as many as





E? 23. A recent New York Times editorial criticized the city’s election board for, first of all, failing to replace outmoded voting machines prone to breakdowns, and secondarily, for their failure to investigate allegations of corruption involving board members.

(A) secondarily, for their failure to

(B) secondly, for their failure to

(C) secondly, that they failed and did not

(D) second, that they failed to

(E) second, for failing to





E? 33. A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients, is cultivated in China as part of a program to integrate traditional herbal medicine into a contemporary system of health care.

(A) A substance derived from the Madagascar periwinkle, which has proved useful in decreasing mortality among young leukemia patients,

(B) A derivative, which has proved useful in decreasing mortality among young leukemia patients, of the Madagascar periwinkle,

(C) A Madagascar periwinkle derivative, which has proved useful in decreasing mortality among young leukemia patients,

(D) The Madagascar periwinkle has a derivative which has proved useful in decreasing mortality among young leukemia patients, that

(E) The Madagascar periwinkle, a derivative of which has proved useful in decreasing mortality among young leukemia patients,

题号前面的是答案。
这几道题看了答案还是想不通，麻烦高手解释一下，谢谢啊。

bitieming

1.考点是数量比较和as many as  的结构，as many than的用法错误，所以只剩下CE，然后看比较的东西是什么，E中 as many as 前后的比较对象是one computer和four years ago，比较对象不对等。C中是there be的比较结构，符合条件。
2.考点是平行，for doing and for doing两个动词的平行，中间的逗号时因为插入语的存在。可以根据doing的平行立刻选出E，这道题中的 for不知道是不是可以省略，因为两个for功能相同，但是由于中间存在插入语有for显得结构比较清晰美观，希望NN赐教，好在没有出考点。
3.根据划线部分后面的is cultivated判断出前面的主语应该是一种植物也就是The Madagascar periwinkle，直接锁定DE，D中that想指代这种植物，但是与修饰对象过远而且中间加入好多可能引起指代歧义的成分，所以选E。

mxl186

但是为什么第一道题的前后be动词数量不一致，前面是单数，后面是复数？
第二道题，第一个for在first前面，那么如果要并列的话，第二个就不应该再有for啊，对吧？如果第二个有for的话就应该是first for……second for……
第三道题中，真正的主语不应该是The Madagascar periwinkle的衍生物吗？怎么变成The Madagascar periwinkle本身了呢？

谢谢帮助~~

bitieming

第一题解答无能……我也不知道为什么
第二题first和second都是插入语，不影响句子结构的分析。介词在并列中功能一致时的确可以（不是必须）省略，但是在本题中由于插入语的存在以及句子之间的距离比较长，有必要加上for来强调并列的两个成分。关于for的位置其实也没有这么严格啦，E如果改成……，and for, second, falling……一样是正确的。
第三题，主语是植物，因为谓语动词是is cultivated，衍生物不能被种植，能被种植的是植物本身。

mxl186

哇，好清楚，谢谢啊~

elvish126

同求第一题 为什么用there were？为什么是复数were？？

ZZmoment

第二题，为什么是second 而不是secondly？

elvish126

顶下，哪位大神教教我们，。。。。