Since its opening, the Nobel Peace Center has been educating, inspiring and entertaining its visitors 15 exhibitions, activities, lectures, and cultural events.
答案：(D) through
through 表示「透過」某種手段達成目的，符合「透過展覽、活動、講座與文化活動教育遊客」的語意；among（在…之中）、regarding（關於）、including（包括）皆不符合表示手段的語意。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項都是介系詞，後面接的又是一長串清單（展覽、活動、講座、文化活動），清單很容易讓你聯想到「包括」而選 including，或讀成「在這些東西之中」而選 among。
先確認空格前面那一段在做什麼事：the Nobel Peace Center has been educating, inspiring and entertaining its visitors（這個中心一直在教育、啟發、娛樂到訪的遊客）。這是一連串「中心做了什麼」的動作，後面那串清單則是它拿什麼來做，是手段，不是範圍，也不是舉例。through 的本義是「穿過」，往抽象推一步就是「經由某個過程或媒介達成」，例如 learn a lot through experience（從經驗中學到很多）。填進去讀成「藉由展覽、活動、講座與文化活動來教育遊客」，語意才對得上。
among（在……之中）講的是一個東西位在一群東西裡面，但中心並不是「位在展覽之中」。regarding（關於）與 including（包括）都是由分詞轉成介系詞的字，這一類字不必去分析主動被動，認得它就好；但認得之後仍然要看語意，regarding 會變成「關於這些展覽在教育遊客」，句子懸空；including 後面接的必須是前面某個整體的一部分，這裡前面找不到一個可以被「包括」的整體。同一篇的第 13 題剛好相反：那一題四個選項後面全部配 to，介系詞幫不上忙，只能靠語意；這一題則是介系詞本身就是答案，兩題可以對照著看。
through ＋ 名詞（藉由、經由）、learn through experience（從經驗中學到）、regarding（關於）、including（包括）、among（在……之中）、inspire（啟發、激勵）
The Nobel Peace Center is located in an old train station building close to the Oslo City Hall and overlooking the harbor. It was officially opened on June 11, 2005 as part of the celebrations to 11 Norway's centenary as an independent country.
It is a center where you can experience and learn about the various Nobel Peace Prize Laureates and their activities 12 the remarkable history of Alfred Nobel, the founder of the Nobel Prize. In addition, it serves as a meeting place where exhibits, discussions, and reflections 13 to war, peace, and conflict resolution are in focus.
The Center combines exhibits and films with digital communication and interactive installations and has already received attention for its use of state-of-the-art technology. Visitors are welcome to experience the Center 14 or join a guided tour. Since its opening, the Nobel Peace Center has been educating, inspiring and entertaining its visitors 15 exhibitions, activities, lectures, and cultural events. The Center is financed by private and public institutions.