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.
答案：(C) ranging
【句型】ranging from...to... 固定分詞片語「範圍從……到……」；differing（不搭配from...to...這個固定範圍表達）、wandering（漫遊）、climbing（攀爬）都不合。
這題答對率只有 51%。climbing 是最容易選的一個，因為整句都在講山，climb 又剛好是「攀登」，「從 1,500 公尺爬升到 2,500 公尺」中文順得不得了。落差在於分詞的意義主詞是誰：這裡被形容的是 Rwanda's thousand hills（那一千座山丘本身），山丘不會自己往上爬。而且句子要說的是「這些山丘的高度分布在 1,500 到 2,500 公尺之間」—— 同一時間、各座山各有各的高度，不是同一座山一路往上升。這題鑑別度 56，分開的就是有沒有把 from...to... 當成一整組線索去找搭配的動詞，還是只把 from 讀成一般的「從……」。
兩個逗號夾住的 ___ from 1,500 m to 2,500 m in height 是插進來補充說明前面名詞的分詞片語，第一步永遠是還原成完整子句：Rwanda's thousand hills range from 1,500 m to 2,500 m in height.（盧安達的千座山丘高度從 1,500 公尺到 2,500 公尺不等。）主詞和動詞搭不搭，一還原就看得出來。第二步看 from...to... 這一組：range 的詞典詞條就是 range from A to B（在 A 到 B 之間變動，劍橋詞典 range 詞條），它給的是一組數值的上下限，正好搭上句尾的 in height（在高度這個項目上）。這裡也可以順手複習 from X to Y 的平行原則 ——X 和 Y 必須是同性質的東西，本題兩邊都是高度數值，對得整整齊齊。同一份考卷的第 18 題考 including，和本題一樣是「-ing 形態的字，後面接什麼是有規矩的」：including 後面直接接名詞，ranging 後面一定接 from...to...，兩題可以一起記。
differing（不同的）：differ 的搭配是 differ from（與……不同）或 differ in（在某方面不同），沒有 differ from A to B 這種表範圍的用法。如果真要說「高度各有不同」，英文會寫 differing in height，不會拉出 from...to...。看到 from 後面跟著 to，就要去找能配成一整組的動詞，這一招和片語題先檢查介系詞是同一個道理。wandering（漫遊、閒晃）：wander 的主詞要能自己移動，像 wander around the town（在鎮上閒晃）；山丘不會漫遊。climbing（攀爬；上升）：climb 確實可以表示數值上升，像 The plane climbed from 5,000 to 30,000 feet.（飛機從 5,000 英尺爬升到 30,000 英尺。）所以它錯不在片語不通，而在意義主詞不對 —— 飛機是真的在升高，一千座山丘不是。
range from A to B（範圍從 A 到 B 不等）、a wide range of（各式各樣的）、differ from（與……不同）、wander around（四處閒晃）、in height（在高度上）、all year around（一年到頭）
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.