Though it was once known to the world for the 1994 tribal conflict that resulted in about one million deaths, Rwanda has 30 the mass killing.
答案：(A) survived
survive 是及物動詞，直接接所經歷的災難，survive the mass killing 意為「從大屠殺中存活下來」；recover 需要接 from，transformed（轉變）、endangered（危及）語意也不合。
survive + N（不加介系詞）。你背的是 survive ＝ 存活，要說「從那場災難中活下來」，中文有個「從」，就寫成 survive from——這是最常見的錯。它是及物動詞，後面直接接那場災難：Rwanda has survived the mass killing.（盧安達挺過了那場大屠殺。）
真正需要 from 的是 recover：recover from an illness（從疾病中康復）。兩個字都在講劫後，一個直接接受詞，一個要 from，一起記最省事。文內線索也很清楚：Though it (Rwanda) was once known to the world for the 1994 tribal conflict（雖然盧安達一度以 1994 年的部族衝突為世人所知）是讓步，下一句 Now it (Rwanda) is healing and prospering（如今正在復原、日漸繁榮）是印證——先挺過來，才談得上復原。survive 家族一起記：survivor（生還者）、survival（生存）。一句記完：The village school survived the earthquake, and classes started again a week later.（那所村裡的小學挺過了地震，一週後就復課了。）〔情境取材自 99 課綱參考試卷作文題：鄰國大地震寫信〕
transformed（使轉變）方向不對，填進去變成盧安達改造了那場屠殺；recovered 少了 from，接不上後面的受詞；endangered 是「使…陷入危險」，填進去變成盧安達害那場屠殺陷入危險，說不通。
survive the war／an accident（在戰爭／意外中生還，及物不加介系詞）、survive on（靠…維生）、recover from（從…康復）、be survived by（遺有…在世）、a survivor（生還者）。
Whenever I set foot on the soil of Rwanda, a country in east-central Africa, I feel as if I have entered paradise: green hills, red earth, sparkling rivers and mountain lakes. Herds of goats and cows 26 enormous horns graze the lush green fields. Although located close to the equator, Rwanda's "thousand hills," 27 from 1,500 m to 2,500 m in height, ensure that the temperature is pleasant all year around. And being a tiny country, everything in Rwanda is 28 in a few hours and the interesting spots can be explored comfortably in a couple of weeks.
But 29, Rwanda is a symbol of the triumph of the human spirit over evil. Though it was once known to the world for the 1994 tribal conflict that resulted in about one million deaths, Rwanda has 30 the mass killing. Now it is healing and prospering and greets visitors with open arms.