大全B-9.15

9.     Art museums do not usually think of their collections as capital or consider the interest income that would be generated if a portion of the capital would have been invested in another form. 

        (A) be generated if a portion of the capital would have been

(B) have been generated if a portion of the capital would have been

(C) be generated if a portion of the capital were

(D) be generated if a portion of the capital was（C）

(E) be generated if a portion of the capital had been

答案是C,请问这道题怎么不选D啊?

谢谢

15.   The increased popularity and availability of televisions has led to the decline of regional dialects, language variations which originate from diverse ethnic and cultural heritages and perpetuated by geographic isolation.

       (A) which originate from diverse ethnic and cultural heritages and perpetuated

Which did not correct

(B) that originated from diverse ethnic and cultural heritages and perpetuated

Redundant

(C) originated from diverse ethnic and cultural heritages and perpetuated

(D) originating from diverse ethnic and cultural heritages and perpetuated（D）

(E) originating from diverse ethnic and cultural heritages and perpetuating

我选的C, 答案是D, 请问perpetuated 是和谁保持平行啊?

谢谢

第一句同问, 感觉不应该用虚拟语气吧

第二句, originate是主动的,而整个句子是现在时态,所以originated错, 故 B C,可以排除

而perpetuate , 是vt. , 被动语态, 故选perpetuated, 与originate平行

所以要主意的是平行结构不应该只看形式上的ing 或者ed, 而应该先搞清主动被动