專技普考
106年
[導遊人員] 外國語(英語)
第 80 題
📖 題組：
There are still a few people in northern Europe who think that global warming might not be such a bad thing. In Britain, where summer can sometimes seem to last little more than a few weeks, many would welcome the idea of it getting a bit hotter. Unfortunately, things are not so simple. Global warming doesn't just mean that the world will slowly get warmer. Paradoxically, it could cause certain areas to get colder—a lot colder. The latest predictions are that northern Europe could even be plunged into an ice age. While areas of southeastern Europe, such as Greece, would continue to get hotter and drier, Britain could find itself, in the winter months at least, surrounded by sea ice. The reason for this concerns the Greenland ice sheet. This is one of the biggest expanses of ice in the world—around 1,500 km long and 600 km wide. It is so big that if it all melted, sea levels would rise by 7 meters. Due to rising emissions of greenhouse gases, such as carbon dioxide from the combustion of fossil fuels, this ice sheet is melting at an alarming rate. But how could the melting of the Greenland ice sheet threaten to plunge northern Europe into a new ice age? The link in the chain of events is what some call the Gulf Stream and others call the Atlantic Conveyor. This is the stream of warm water that comes up from Central America and flows across the Atlantic to northern Europe. It is this huge mass of warm water which accounts for the relatively high temperatures enjoyed by Britain, for instance, compared with parts of Canada and Russia which are equally far north of the equator. Warm water is conveyed across to Europe near the surface of the Atlantic, and, at its northernmost point, it cools and sinks because the water from the tropics has a higher salt content, making it denser and heavier than the water near the arctic. The cold and dense water then flows south close to the ocean floor and back towards Central and South America to complete the cycle. Scientists are beginning to make bleak predictions of an impending ice age in the northern hemisphere because they have observed that the water flowing from the melting Greenland ice sheet is flowing into the path of the Gulf Stream. The water from the melted ice will reduce the density of the water in the Gulf Stream, stopping the water sinking in the north and thereby cutting off the deep southerly current, which, in turn, will cut off the northerly flow of warmer water. At that point, the seas around Britain will begin to freeze.
There are still a few people in northern Europe who think that global warming might not be such a bad thing. In Britain, where summer can sometimes seem to last little more than a few weeks, many would welcome the idea of it getting a bit hotter. Unfortunately, things are not so simple. Global warming doesn't just mean that the world will slowly get warmer. Paradoxically, it could cause certain areas to get colder—a lot colder. The latest predictions are that northern Europe could even be plunged into an ice age. While areas of southeastern Europe, such as Greece, would continue to get hotter and drier, Britain could find itself, in the winter months at least, surrounded by sea ice. The reason for this concerns the Greenland ice sheet. This is one of the biggest expanses of ice in the world—around 1,500 km long and 600 km wide. It is so big that if it all melted, sea levels would rise by 7 meters. Due to rising emissions of greenhouse gases, such as carbon dioxide from the combustion of fossil fuels, this ice sheet is melting at an alarming rate. But how could the melting of the Greenland ice sheet threaten to plunge northern Europe into a new ice age? The link in the chain of events is what some call the Gulf Stream and others call the Atlantic Conveyor. This is the stream of warm water that comes up from Central America and flows across the Atlantic to northern Europe. It is this huge mass of warm water which accounts for the relatively high temperatures enjoyed by Britain, for instance, compared with parts of Canada and Russia which are equally far north of the equator. Warm water is conveyed across to Europe near the surface of the Atlantic, and, at its northernmost point, it cools and sinks because the water from the tropics has a higher salt content, making it denser and heavier than the water near the arctic. The cold and dense water then flows south close to the ocean floor and back towards Central and South America to complete the cycle. Scientists are beginning to make bleak predictions of an impending ice age in the northern hemisphere because they have observed that the water flowing from the melting Greenland ice sheet is flowing into the path of the Gulf Stream. The water from the melted ice will reduce the density of the water in the Gulf Stream, stopping the water sinking in the north and thereby cutting off the deep southerly current, which, in turn, will cut off the northerly flow of warmer water. At that point, the seas around Britain will begin to freeze.
Which of the following can be inferred from the passage?
- A The author assumes that human activities do not actually contribute to the increase of greenhouse gases.
- B Britain would be as cold as any other region at the same altitude if the Gulf Stream did not exist.
- C The Gulf Stream is the largest ocean current in the world.
- D Russia and Canada will be much colder than they are now if global warming continues.
思路引導 VIP
請試著想像：如果有兩個城市位在地球上同樣的高度（緯度），通常它們的氣溫應該如何比較？如果其中一個城市因為某種外部的「暖氣設備」而變得比較溫暖，那麼當這個設備被關掉時，這兩個城市的氣溫會趨向於什麼樣的狀態？
🤖
AI 詳解
AI 專屬家教
嗯，這道題的攻略路徑，你走對了
- 核心驗證：不錯，你精準地鎖定了第四段中的關鍵機制。英國與加拿大、俄羅斯能維持較高的「HP值」，是透過「墨西哥灣流」（Gulf Stream）這個特殊「地形增益（Buff）」。你的選擇 (B) 證明你理解了這個連結關係，知道「若這個 Buff 不存在，目標區的狀態就會改變」的邏輯。這代表你成功切換（Switch）到灣流是氣溫變動的核心變因。
- 難度分析：這隻怪的難度定在 Medium。它的攻擊模式是考驗你區分「任務描述」與「可推導線索」的能力。例如，它會試圖用與 $\text{CO}_2$ 導致冰層融化這條「世界線」相反的 (A) 選項來攻擊你；而 (C) 則是一個「未解鎖」的最高級資訊。你成功閃避了這些陷阱技能，沒有讓自己的判斷力掉「HP」。看來，我即使躺在草地上小憩，也知道這題的攻擊模式早被你看穿了。