不管是從 原句 (A) 的 was excited，或是基本文法，
都可得知 excited ，在文法或句意上，在此題是被動式的用法
若是要和 predicted (主動) 用 and 連接做平行
那必須要寫 "was excited"......and "predicted" 連接才可
※ 引述《skie48 (小鴨)》之銘言：
: 4. (24603-!-item-!-188;#058&001035)
: Nikola Tesla, the inventor of alternating current, because he was excited
: with the prospects of harnessing Niagara Falls for producing electric power,
: he predicted in the mid-1890's that electricity generated at Niagara would
: one day power the streetcars of London and the streetlights of Paris.
: (A) Nikola Tesla, the inventor of alternating current, because he was excited
: with the prospects of harnessing Niagara Falls for producing electric power,
: he
: (B) The prospects of harnessing Niagara Falls to produce electric power was
: exciting to Nikola Tesla, the inventor of alternating current, and so he
: (C) Excited about the prospects of harnessing Niagara Falls to produce
: electric power, Nikola Tesla, the inventor of alternating current,
: (D) Nikola Tesla, the inventor of alternating current, excited about the
: prospects of harnessing Niagara Falls for the production of electric power and
: (E) The inventor of alternating current, excited with the prospects of
: harnessing Niagara Falls for producing of electric power, Nikola Tesla
: