科學傢稱，一頭座頭鯨完成瞭有記錄以來最長且最不尋常的遷徙之一，氣候變化可能是導致這頭鯨遷徙的原因。這頭座頭鯨於 2017 年在哥倫比亞附近的太平洋被發現，幾年後又在印度洋桑給巴爾附近突然出現，遷徙距離至少為 1.3 萬公裡。
Humpback whales are known for having one of the longest migrations of any mammal, migrating from their summer feeding grounds to breed in warmer waters closer to the equator.
座頭鯨是哺乳動物中遷徙距離最長的物種，並以此聞名，它們從夏季的覓食地遷徙到靠近赤道的溫暖水域進行繁殖。
But international researchers say this adult male humpback had one of the longest and most unusual migrations ever recorded, visiting breeding grounds in both the Pacific and the Indian Ocean over the course of several years.
但是有關國際研究人員稱這頭成年雄性座頭鯨進行瞭有記錄以來最漫長且最不尋常的遷徙之一，在幾年的時間裡抵達瞭太平洋和印度洋的繁殖地。
They think this epic journey might be down to climate change shrinking populations of krill, the tiny, shrimp-like creatures humpback whales feed on. Or it could be an ocean odyssey to find a mate.
他們認為這次極其漫長的遷徙旅程可能是由氣候變化導致磷蝦的數量減少造成的，因為這種微小的蝦狀生物是座頭鯨的食物。另外，這也有可能是一次尋找伴侶的海洋冒險之旅。
The researchers hope a citizen science project analysing hundreds of thousands of photographs of whales through artificial intelligence will help give an answer. Whales can be identified through the individual shapes and patterns of their tails, allowing their movement around the globe to be mapped.
研究人員希望一個通過人工智能分析數十萬張鯨魚照片的公民科學項目能夠幫忙找到答案。人們可以通過鯨魚獨特的尾部形狀和紋理來識別它們，從而繪制出它們在全球范圍內的遷徙路線。
詞匯表
humpback whales 座頭鯨
migrations 遷徙
mammal 哺乳動物
feeding grounds 覓食地
breed 繁殖
krill 磷蝦
odyssey 漫長而驚險的旅途
mate （動物的）配偶
artificial intelligence 人工智能
mapped 繪制
聽力練習
一、聽第一遍音頻，回答問題。
1. Write a one sentence summary of this news piece.
二、用一分鐘閱讀下列問題，然後聽第二遍音頻並回答問題。
1. Humpback whales have one of the longest migrations of any mammal.
a. True
b. False
c. Not given
2. Why did the whale travel so far?
a. to find food, like krill
b. to breed
c. researchers don’t know exactly why
3. How will researchers discover why the whale travelled so far?
a. by using artificial intelligence to take photographs
b. through analysis of photographs
c. by using research from a range of community projects
4. How can whales be identified?
a. by details on their tails
b. by the shape of their head
c. by using tracking devices
三、聽第三遍音頻，將句子補充完整。（提示：可以反復聽，直到聽清楚每一個詞）
1. This adult male humpback had one of the longest and most _______ migrations ever recorded.
2. It could be an ocean _______ to find a mate.
答案
一、聽第一遍音頻，回答問題。
1. Write a one sentence summary of this news piece.
Own answers. For example: A whale has travelled on a very long migration, possibly because of climate change or to find a mate.
二、用一分鐘閱讀下列問題，然後聽第二遍音頻並回答問題。
1. a. True. Humpback whales are known for having one of the longest migrations of any mammal.
2. c. They think this epic journey might be down to climate change shrinking populations of krill, or it could be an ocean odyssey to find a mate.
3. b. The researchers hope a citizen science project analysing hundreds of thousands of photographs of whales through artificial intelligence will help give an answer.
4. a. Whales can be identified through the individual shapes and patterns of their tails.
三、聽第三遍音頻，將句子補充完整。（提示：可以反復聽，直到聽清楚每一個詞）
1. This adult male humpback had one of the longest and most unusual migrations ever recorded.
2. It could be an ocean odyssey to find a mate.
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