hce_kmu
106年
英文
第 31 題
📖 題組：
When humans first ventured out of Africa some 60,000 years ago, they left genetic footprints still visible today. By mapping the appearance and frequency of genetic markers in modern peoples, we create a picture of when and where ancient humans moved around the world. These great migrations eventually led the descendants of a small group of Africans to occupy even the farthest reaches of the Earth. Our species is an African one: Africa is where we first evolved, and where we have spent the majority of our time on Earth. The earliest fossils of recognizably modern Homo sapiens appear in the fossil record at Omo Kibish in Ethiopia, around 200,000 years ago. Once the climate started to improve, the population expanded, and some intrepid explorers ventured beyond Africa. These early beachcombers expanded rapidly along the coast to India, and reached Southeast Asia and Australia by 50,000 years ago. Around 20,000 years ago a small group of these Asian hunters entered the East Asian Arctic during the Last Glacial Maximum. At this time the great ice sheets covering the far north had literally sucked up much of the Earth's moisture in their vast expanses of white wasteland, dropping sea levels by more than 300 feet. This exposed a land bridge that connected the Old World to the New, joining Asia to the Americas. People's journey never ended. By 14,000 years ago they had penetrated the land south of the ice, and made it all the way to the tip of South America. Is this part of story amazing?
When humans first ventured out of Africa some 60,000 years ago, they left genetic footprints still visible today. By mapping the appearance and frequency of genetic markers in modern peoples, we create a picture of when and where ancient humans moved around the world. These great migrations eventually led the descendants of a small group of Africans to occupy even the farthest reaches of the Earth. Our species is an African one: Africa is where we first evolved, and where we have spent the majority of our time on Earth. The earliest fossils of recognizably modern Homo sapiens appear in the fossil record at Omo Kibish in Ethiopia, around 200,000 years ago. Once the climate started to improve, the population expanded, and some intrepid explorers ventured beyond Africa. These early beachcombers expanded rapidly along the coast to India, and reached Southeast Asia and Australia by 50,000 years ago. Around 20,000 years ago a small group of these Asian hunters entered the East Asian Arctic during the Last Glacial Maximum. At this time the great ice sheets covering the far north had literally sucked up much of the Earth's moisture in their vast expanses of white wasteland, dropping sea levels by more than 300 feet. This exposed a land bridge that connected the Old World to the New, joining Asia to the Americas. People's journey never ended. By 14,000 years ago they had penetrated the land south of the ice, and made it all the way to the tip of South America. Is this part of story amazing?
This essay falls into the research field of _________.
- A genetic engineering
- B biotech engineering
- C romantic history
- D travel literature
- E migration studies
思路引導 VIP
如果我們撇開文中提到的科學技術（如基因、化石），僅觀察文中描述的地點變化——從非洲、印度到東亞北極區，最後抵達南美洲——你認為這些內容主要是在描述人類族群的哪一種集體活動？
🤖
AI 詳解
AI 專屬家教
太棒了！你非常敏銳地捕捉到了文章的宏觀主旨，這展現了你優異的文本整合能力。選擇 (E) 遷移研究 (migration studies) 是一個非常精準的判斷，這代表你沒有被文章開頭的技術性名詞所干擾，而是成功辨識出了作者的敘述重心。
文本脈絡與學科歸屬
這篇文章雖然在第一段提到了「遺傳標記（genetic markers）」，但這些科學工具是用來服務於更高層次的目標：還原人類從非洲出發、散布至全球的歷程。文中頻繁出現關鍵字，如 great migrations（大遷徙）、moved around the world（在世界各地移動）以及 journey（旅程），這些詞彙共同建構了「人口移動」的主軸。相較於 (A) 遺傳工程或 (B) 生技工程側重於技術應用，這篇文章明顯更關注人類族群在時間與空間上的流轉。
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