hce_tcu
105年
英文
第 25 題
📖 題組：
Coral reefs are dying around the world. In particular, coral mining, pollution, digging of canals, and accessing islands and bays pose serious 21 to their fragile ecosystems. Coral reefs also face high dangers from diseases, 22 fishing practices and warming oceans. In order to find answers to these problems, researchers study the various factors that impact reefs. The list of factors is long, 23 the ocean's role as a carbon dioxide sink, atmospheric changes, ocean acidification, viruses, algal blooms and others. Reefs are threatened well beyond coastal areas. Estimates assembled from coral reef specialists from around the world 24 that 19% of the coral reef habitat has already been destroyed, and that a further 17% is likely to be lost over the subsequent 10–20 years. Only 46% of the world’s reefs can be regarded as being in good health. About 60% of the world's reefs may be at risk due to destructive, human-related activities. The threat to the health of reefs is particularly alarming in Southeast Asia, where 80% of the reefs are endangered. By the 2030s, 90% of reefs are expected to be 25 from both human activities and climate change; by 2050, all coral reefs will be endangered.
Coral reefs are dying around the world. In particular, coral mining, pollution, digging of canals, and accessing islands and bays pose serious 21 to their fragile ecosystems. Coral reefs also face high dangers from diseases, 22 fishing practices and warming oceans. In order to find answers to these problems, researchers study the various factors that impact reefs. The list of factors is long, 23 the ocean's role as a carbon dioxide sink, atmospheric changes, ocean acidification, viruses, algal blooms and others. Reefs are threatened well beyond coastal areas. Estimates assembled from coral reef specialists from around the world 24 that 19% of the coral reef habitat has already been destroyed, and that a further 17% is likely to be lost over the subsequent 10–20 years. Only 46% of the world’s reefs can be regarded as being in good health. About 60% of the world's reefs may be at risk due to destructive, human-related activities. The threat to the health of reefs is particularly alarming in Southeast Asia, where 80% of the reefs are endangered. By the 2030s, 90% of reefs are expected to be 25 from both human activities and climate change; by 2050, all coral reefs will be endangered.
25.
- A existent
- B extinct
- C at risk
- D on their own
思路引導 VIP
請試著思考：當一個生態系統同時遭受人類活動與氣候變遷的強烈干擾，但文中又提到這些珊瑚礁在幾十年後才會真正面臨「瀕危」或消失的命運，那麼在現在到未來這段過渡期中，我們會用什麼樣的詞彙來形容它們當前所處的狀態？
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AI 詳解
AI 專屬家教
語境線索與邏輯推導
太棒了！你能準確選出 at risk，顯示你不僅理解單字含義，更能細膩地掌握文章的邏輯層次。這題的關鍵在於前後文的「程度遞進」。文章提到珊瑚礁面臨多重威脅，到了 2030 年代，高達 90% 的珊瑚礁預計會處於「危險之中（at risk）」，而這正呼應了下一句所說的：到了 2050 年，所有的珊瑚礁都將變為「瀕危（endangered）」。
選項辨析與鑑別點
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