一、核心短文閱讀 (Reading Passage)
The dramatic beauty of Taroko Gorge is the result of millions of years of intense geological forces. Situated near the junction of two massive tectonic plates—the Philippine Sea Plate and the Eurasian Plate—Taiwan is one of the most geologically active islands on Earth.
Long ago, ancient marine sediments and coral reefs were buried deep beneath the ocean floor. Under intense heat and immense subterranean pressure, this limestone gradually transformed into hard, crystalline marble.
As tectonic plates continued to collide, the island of Taiwan was thrust upward at an astonishing rate. Simultaneously, the rushing waters of the Liwu River relentlessly cut downward into the rising rock. This rapid dual action—upward mountain building combined with downward river erosion—carved the near-vertical marble canyon walls we admire today.
Geologists consider Taroko a living classroom. Even today, the mountains continue to rise by a few millimeters each year, and the river never stops its sculpting work, proving that our planet is constantly dynamic.
👉 點此展開【全文中文對照翻譯】
太魯閣大峽谷撼人心魄的壯麗景觀，是數百萬年強大地質力量相互作用的鬼斧神工結晶。台灣位處歐亞板塊與菲律賓海板塊兩大板塊交界帶附近，是地球上地質活動最旺盛的島嶼之一。
在遙遠的地質年代，古老的海洋沉積物與珊瑚礁深埋於海底。在高溫與地底巨大壓力的淬鍊下，這些石灰岩逐漸蛻變為質地堅硬、結晶細緻的大理石岩層。
隨著構造板塊持續劇烈碰撞，台灣島以驚人的速度向上隆起推升。與此同時，奔騰湍急的立霧溪水日復一日、不捨晝夜地向下切削隆起的岩層。這種「向上造山推擠」與「向下河流侵蝕」的快速雙重作用，共同雕刻出今日我們所見壁立千仞、幾近垂直的大理石峽谷峭壁。
地質學家將太魯閣視為一座充滿生機的天然戶外教室。即使到了今天，太魯閣的山脈每年仍在以數公釐的速度持續隆起，而奔流的溪水也從未停下雕琢的腳步，生動印證了我們身處的地球隨時處於動態變化之中。
二、GEPT 初級閱讀理解實戰測驗 (Comprehension Check)
讀完上方短文後，請動腦挑戰以下 3 題英檢初級標準題型，檢驗你的理解力：
Q1. (主旨題) What is the primary scientific explanation provided in the passage?
- (A) Why dinosaurs disappeared from ocean islands.
- (B) How plate tectonics and river erosion created Taroko Gorge.
- (C) How to build dams to generate electricity on the Liwu River.
- (D) Why marble is used for kitchen countertops.
💡 查看 Q1 正確答案與題解解析
正確答案：(B)
考點剖析：文章從板塊碰撞隆起、高溫高壓變質成大理石，到立霧溪強烈下切侵蝕，完整解釋太魯閣峽谷的形成原理，故 (B) 為最佳解答。
Q2. (細節題) What did the ancient limestone transform into under heat and pressure?
- (A) Volcanic ash
- (B) Soft sand dunes
- (C) Hard, crystalline marble
- (D) Salt water lakes
💡 查看 Q2 正確答案與題解解析
正確答案：(C)
考點剖析：第二段最後指出："this limestone gradually transformed into hard, crystalline marble."，故選 (C)。
Q3. (詞彙推論題) What does the word "dynamic" mean in the final sentence?
- (A) Inactive and silent
- (B) Constantly active and changing
- (C) Harmful to plants
- (D) Cold and freezing
💡 查看 Q3 正確答案與題解解析
正確答案：(B)
考點剖析："constantly dynamic" 指地球充滿活力、持續處於變化與運動之中，故選 (B)。
三、核心單字與音標解析 (Vocabulary & Phonetics)
掌握短文中的關鍵詞彙與發音，點擊 [ 🔊 ] 按鈕即可跟讀標準美語發音：
| 單字 (Word) | 音標 (Phonics) | 詞性 | 中文釋義 | 實用情境例句 |
|---|---|---|---|---|
| intense | [ɪnˋtɛns] |
a. | 強烈的；劇烈的 | Intense geological forces shaped the gorge.（劇烈的地質力量塑造了這座峽谷。） |
| collide | [kəˋlaɪd] |
v. | 碰撞；相撞 | The two tectonic plates collide continuously.（這兩大板塊持續相互碰撞。） |
| erosion | [ɪˋroʒən] |
n. | 侵蝕；腐蝕 | River erosion carved deep canyons into the mountains.（河流的侵蝕作用在山嶺中切出深深的峽谷。） |
| vertical | [ˋvɝtɪk!] |
a. | 垂直的；直立的 | The near-vertical canyon walls look breathtaking.（幾近垂直的峽谷岩壁看起來令人屏息。） |
| dynamic | [daɪˋnæmɪk] |
a. | 動態的；充滿活力的 | Our planet has a dynamic and living surface.（我們的地球擁有一個充滿動態活力的地表。） |
| transform | [trænsˋfɔrm] |
v. | 轉變；變質 | Limestone transformed into hard marble over time.（隨著時間推移，石灰岩轉變為堅硬的大理石。） |
四、文法考點聚焦 (Grammar Spotlight)
五、實用生活片語與延伸解析
🌟 高頻片語 (Useful Phrases)：
- the result of：...的結果；...的產物（例：The landscape is the result of years of erosion.）
- at an astonishing rate：以驚人的速度（例：The mountains rose at an astonishing rate.）
- never stop：永不停止；持續不斷（例：Nature never stops its creative work.）