[求助]大全767

xianwhartons

1. 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

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

(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

我知道选D，originating from和perpetuated by并列，但你们怎么就知道originate用主动，为什么不是说这种差异被产生呢？

britney-gao

如果认为是被动的，应该有动作的实施者，不管这个实施者有没被省略。这句话找不出动作实施者。

sunnylee

为什么选B不可以呢？ 以that引导的限定性定语从句修饰language variations 为什么不可以呢？

rabbitbugs

B和C的错误是一样的；现在分词表主动，过去分词表被动。其实这道题单从分词意思上区分很模糊，所有后面有了介词短语做提示：originating from diverse ethnic，perpetuated by geographic isolation。