According to the Climate Change Group, formed by environmentalists worldwide to document the effects of global warming, Mount Kilimanjaro’s snows and glaciers are melting and are 23 to disappear by 2020.
答案：(C) likely
【句型】likely to 字詞搭配「有可能……」；capable（有能力的，通常接of不接to）、ready（準備好的）、horrible（可怕的）都不合。
be ready to 你很熟（準備好要做某事），代進去唸起來也順，於是選了 ready。問題在 ready 帶有「主動準備、有意願」的味道，而冰河不會準備做什麼。另一個常見狀況是把 capable 與 able 混在一起，忘了它們後面接的東西不一樣。
用兩層去篩：第一，這個形容詞後面能不能接 to 加原形動詞；第二，主詞是不是有意志的東西。be likely to 加原形動詞表示「很可能會…」，是對可能性的推測，主詞可以是無生命的事物——It is likely to rain.（可能會下雨）。本句在推測冰河消失的時程（by 2020），正是這個用法。be capable of 後面接名詞或動名詞，接的是 of 不是 to，光看介系詞就出局了。這組形容詞與介系詞的字詞搭配要成對記：be able to do 對照 be capable of doing。be ready to 加原形動詞在文法上可以，語意卻不合：ready 表示主詞已做好準備、隨時可以行動，用在冰河上等於說冰河「打算」消失。horrible 是純粹的形容詞，沒有 be horrible to do 表可能性這種句型（be horrible to somebody 是「對某人很惡劣」，意思差得遠）。還可以從時態確認：句子前半 are melting 是正在發生的事實，後半接的是預測，推測語氣的 likely 最合。
capable：後面搭配的是 of，而且指「有能力做某事」，冰河沒有能力可言。ready：帶主動意願，主詞必須能做準備。horrible：可怕的，接不出「有可能…」的意思。
be likely to（很可能…）、be capable of（有能力…）、be able to（能夠…）、be ready to（準備好…）、be bound to（必定…）、be about to（即將…）。
Every year tens of thousands of tourists visit Mount Kilimanjaro, the highest mountain in Tanzania, Africa, to witness the scenes depicted in Earnest Hemingway's The Snows of Kilimanjaro. They are attracted by the American writer's 21 of the millennia-old glaciers.
However, this tourist attraction will soon 22 . According to the Climate Change Group, formed by environmentalists worldwide to document the effects of global warming, Mount Kilimanjaro's snows and glaciers are melting and are 23 to disappear by 2020.
Not only will the summit lose its tourist attraction, but the disappearance of the snows will also cause major damage to the ecosystem on the dry African plains at its base. 24 the snow covering the peak, there will not be enough moisture and water to nourish the plants and animals below. Rising temperatures, an effect of global warming, 25 threaten the ecosystem of this mountain area. The loss of snows on the 5,892m peak, which have been there for about 11,700 years, could have disastrous effects on Tanzania.