为何选B不选选D,不能主动表示被动吗?

The vocabulary and grammatical differences between British and American English are so trivial and few as hardly _____.
[A] noticed
[B] to be noticed
[C] being noticed
[D] to notice
问：为何选B不选选D,不能主动表示被动吗?
答：B
译：英国英语和美国英语在词汇上和语法上的差异极少,几乎注意不到.
析：非谓语动词,主动表被动是特例,只有少数几种情况可以用及物动词的主动表示被动.
　　比较：I have some clothes to wash.与I have some clothes to be washed.
不定式作定语,其逻辑主语应为被它所修饰的词,即clothes,clothes与wash是被动关系,所以照理应用to be washed,但是第一句中,我们用主动的to wash,这是因为,我们明显看到了其“施主”I.
之所以这样表达,还有一个原因,就是区分这个动作是由主语I发出的还是由别人发出的.
前一句表示：我有一些衣服要洗（自己动手洗）.
后一句表示：我有一些衣服要拿去让人洗.=to be washed by somebody.
本题句是so as to 不定式的扩展,不属于不定式主动表被动的特殊句式：
1.I have sth.to do
2.Will you give me some book to read?
3.The nut is hard to crack.
其中第三句中是省略了不言自明的for us/ for everyone
从最后一个句型来看,你这个题句倒是类似.但还是有差别.原题句=　are so trival and few that they can hardly be noticed.
如改成：The differences are hard to notice.就是主动表被动了.