...it serves as a meeting place where exhibits, discussions, and reflections 13 to war, peace, and conflict resolution are in focus.
答案：(A) related
related to war, peace, and conflict resolution（與戰爭、和平及衝突解決相關）表示展覽、討論與省思都圍繞這些主題；limited／addicted／contributed 均不符合此處語意搭配。
四個選項都是動詞加 -ed 的形態，很容易立刻進入文法模式，去分主動被動、去想是不是分詞構句。更麻煩的是這四個字後面都能接 to——be related to、be limited to、be addicted to、contribute to，所以「看介系詞就知道」這一招在這一題完全失靈。
鑑別度高達 59，分開的正是有沒有先把句子的骨幹抓出來。主詞是三個並列的名詞 exhibits, discussions, and reflections（展覽、討論與省思），真正的動詞是後面的 are in focus。中間那一串沒有位置再放一個限定動詞，所以空格填的是掛在名詞後面的分詞，補充說明這三樣東西是什麼樣的東西。這就是後位修飾：分詞單獨一個放在名詞前面（a barking dog、a broken window），一旦後面還帶著東西（這裡帶了 to war, peace, and conflict resolution），整串就得移到名詞後面（the man standing there）。四個都是過去分詞、也都配 to，形態與介系詞都刷不掉任何一個，只能靠語意——這個中心的展覽與討論是「與戰爭、和平、衝突解決有關的」，只有 related 講得通。
be limited to 是「僅限於」，會變成「只限這三個主題」，與這一句開頭的 In addition（此外，還有）語意矛盾，那個轉承語正在加東西，不是在設限。be addicted to 是「對……上癮」，只用在人身上，reflections 不會上癮。contribute to 是「對……有所貢獻、促成」，方向相反，reflections contributed to war 會讀成「對戰爭有所貢獻的省思」。
be related to（與……有關）、be limited to（僅限於）、be addicted to（對……上癮）、contribute to（對……有所貢獻）、conflict resolution（衝突解決）、in focus（成為焦點）。
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.