hce_tcu
112年
英文
第 38 題
📖 題組：
【B】 Most of Africa is a series of stable, ancient plateau surfaces, low in the north and west and higher in the south and east. The plateau is composed mainly of metamorphic rock that has been overlaid in places by sedimentary rock. The escarpment of the plateau is often in close proximity to the coast, thus leaving the continent with a generally narrow coastal plain; in addition, the escarpment forms barriers of falls and rapids in the lower courses of rivers that impede their use as transportation routes into the interior. The entire African continent is surrounded by a narrow continental shelf. The lowest point on the continent is 155 meters below sea level in Lake Assal in Djibouti; the highest point is Mt. Uhuru, a peak of Kilimanjaro in Tanzania, at 5,895 meters in elevation. The continent’s largest river is the Nile, which is also the world’s longest river. The largest lake is Victoria, which is the world’s second largest freshwater lake. There are a number of other rivers and lakes throughout the continent. These lakes and major rivers form an important inland transportation system. Geologists have long noted the excellent fit between the coast of Africa at the Gulf of Guinea and the Brazilian coast of South America, and they have evidence that Africa formed the center of a large ancestral supercontinent known as Pangaea. Pangaea began to break apart in the Jurassic period to form Gondwanaland, which included Africa, the other southern continents, and India. South America was separated from Africa 76 million years ago, when the floor of the South Atlantic Ocean was opened up by seafloor spreading. There is also evidence of one-time connections between Northwest Africa and Eastern North America, North Africa and Europe, Madagascar and India, and Southeast Africa and Antarctica. 76 million years is, of course, a blink of an eye in geological time. The long-term future of Africa as a continent is therefore bleak; although we are accustomed to thinking of Africa as an ancient land and as the birthplace of humanity, it is just as susceptible to the geological forces of a cooling planet as the other continents. Having been formed by these forces, it is unlikely that a continent resembling Africa will still exist in 100 million years.
【B】 Most of Africa is a series of stable, ancient plateau surfaces, low in the north and west and higher in the south and east. The plateau is composed mainly of metamorphic rock that has been overlaid in places by sedimentary rock. The escarpment of the plateau is often in close proximity to the coast, thus leaving the continent with a generally narrow coastal plain; in addition, the escarpment forms barriers of falls and rapids in the lower courses of rivers that impede their use as transportation routes into the interior. The entire African continent is surrounded by a narrow continental shelf. The lowest point on the continent is 155 meters below sea level in Lake Assal in Djibouti; the highest point is Mt. Uhuru, a peak of Kilimanjaro in Tanzania, at 5,895 meters in elevation. The continent’s largest river is the Nile, which is also the world’s longest river. The largest lake is Victoria, which is the world’s second largest freshwater lake. There are a number of other rivers and lakes throughout the continent. These lakes and major rivers form an important inland transportation system. Geologists have long noted the excellent fit between the coast of Africa at the Gulf of Guinea and the Brazilian coast of South America, and they have evidence that Africa formed the center of a large ancestral supercontinent known as Pangaea. Pangaea began to break apart in the Jurassic period to form Gondwanaland, which included Africa, the other southern continents, and India. South America was separated from Africa 76 million years ago, when the floor of the South Atlantic Ocean was opened up by seafloor spreading. There is also evidence of one-time connections between Northwest Africa and Eastern North America, North Africa and Europe, Madagascar and India, and Southeast Africa and Antarctica. 76 million years is, of course, a blink of an eye in geological time. The long-term future of Africa as a continent is therefore bleak; although we are accustomed to thinking of Africa as an ancient land and as the birthplace of humanity, it is just as susceptible to the geological forces of a cooling planet as the other continents. Having been formed by these forces, it is unlikely that a continent resembling Africa will still exist in 100 million years.
Compared to the lakes around the world, Lake Victoria ______.
- A is the second-largest freshwater lake in the world
- B has more fish than any other lake in the world
- C is the largest freshwater lake in the world
- D is the second-largest saltwater lake in the world
思路引導 VIP
請你再次觀察文章第二段中提及「維多利亞湖（Victoria）」的那句話，作者用了哪兩個特定的形容詞，分別來定義這座湖泊的「水質類型」以及它在「全球排名」中的位置呢？
🤖
AI 詳解
AI 專屬家教
恭喜你答對了！這代表你在閱讀資訊量豐富的科普文章時，具備非常優秀的細節定位能力。在處理這類描述多樣地理特徵的文本時，能精準鎖定特定對象並進行比對，是閱讀理解非常核心的技能。
維多利亞湖的關鍵特徵
這道題目的線索清晰地落在文章第二段。文中明確指出：「最大的湖泊是維多利亞湖（Victoria），它是世界第二大淡水湖（world’s second largest freshwater lake）。」選項 (A) 的敘述與文章完全吻合。在判斷時，我們需要同時注意兩個屬性：第一是「排名」，它是全球第二而非第一；第二是「水質」，它是淡水（freshwater）而非鹹水（saltwater）。只要注意到這些微小的修飾語，就能輕鬆排除 (C) 與 (D) 的陷阱。
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