[求助]请教各位OG11两道题

yamibaofan

2道都是紫皮里的, 有点困惑，不晓得大家做的时候也有没有同样的疑惑啊？请高手们解答解答~~

谢谢~~~

25. The Baldrick Manufacturing Company has for several years followed a policy aimed at decreasing operating costs and improving the efficiency of its distribution.

A. aimed at decreasing operating costs and improving

B. aimed at the decreasing of operating costs and to improve

C. aiming at the decreasing of operating costs and improving

D. the aim of which is the decreasing of operating costs and improving

E. with the aim to decrease operating costs and to improve

这道答案是A.   但我不明白的是这里pocily为什么可以用aimed 来修饰，是表示a policy which was aimed at....吗？为什么不能用主动式表示呢？

69. Organized in 1966 by the Fish and Wildlife Service, the Breeding Bird Survey uses annual roadside counts along established routes for monitoring of population changes of as many as, or of more than 250 bird species, including 180 songbirds.

A. for monitoring of population changes of as many as, or of

B. to monitor population changes of as many, or

C. to monitor changes in the populations of

D. that monitors population changes of

E. that monitors changes in populations of as many as, or

这道题答案是C。OG里面的解释是说可以把of as many as, or of省去，可是of as many as, or of more than 不是应该表达为at least么？为什么可以直接表达成more than了呢？

大家探讨探讨哦~~~~~

yamibaofan

555555没人理我，顶啊顶~~

AlienX

不是高手...只是路過...
25. 同問.  看了字典上的example - http://hk.dictionary.yahoo.com/search.html?q=1&s=aim&Submit=+%ACd%A6r+, 看來要表示X針對Y, "aimed at"是一定是被動...NN?
69. as many as or more than跟more than的意思是不一樣, 跟LZ說的一樣 - 要用at least來代.  可是A, B, D and E都有文法上的問題...所以只能選C雖然改變了一點點的原意..

yamibaofan

恩。。。

用sb 做主语用主动，用sth做主语要用被动了

谢谢啦