84. (29059-!-item-!-188;#058&003806) The Nobel Prize in chemistry was awarded to three scientists for their discovery that plastic can be made electrically conductive--an advance that has led to improvements in film, television screens, and windows. (A) that plastic can be made electrically conductive--an advance that has led (B) that plastic can be made electrically conductive--this advance leading (C) that plastic can be made to be electrically conductive, and this advance led (D) of plastic's ability to be made electrically conductive, with this advance leading (E) of plastic being able to be made electrically conductive--an advance that has led 解释说b项错在this是特指,这个明白了。可解释又说this advance leading缺少谓语结构。。。这我就不明白了,那a项的谓语结构在哪呢??一个定从修饰,一个分词修饰名词,除了时态,有什么区别,怎么能说b项缺少谓语结构呢? |