Believed to originate from a small area on their forehead,elephants emit low-frequency sounds that may be used as a "secret language" to communicate with other members of the herd. A) Believed to originate from a small area on their forehead,elephants emit low-frequency sounds that may be used B)Elephants emit low-frequency sounds that are believed to originate from a small area on their foreheads,and they may use this C)Elephants emit low-frequency sounds,believed to originate from a small area on their foreheads,that they may use D)Originating,it is believed,from a small area on their foreheads,elephants emit low-frequency sounds they may use E)Originating,it is believed,from a small area on their foreheads,low-frequency sounds are emitted by elephants that maybe used

Ans: (C)

我的疑問是..............

雖然 , believed .............., 插入句 刪掉後 沒有問題 之前也看過不少 N,________, that ... 中間隔著插入句 that仍然修飾 N Elephants emit low-frequency sounds which are believed to originated... non-restrictive clause 改 participle phrase => Elephants emit low-frequency sounds,believed to originate 只是我也有相同困惑著是 believed是否會修飾到 Elephants........? 可是如果用句意評斷的話 ,believed to originate from a small area on their foreheads 主詞就肯定不是 Elephant自己 自己怎麼會 orginiate from 自己的foreheads呢...

搂主说的对，logically, believed 不能修饰elephants.

请参阅OG146T对choice E 的解释.