hce_isu
104年
英文
第 30 題
📖 題組：
( 2 ) Disaster movies often portray catastrophes that destroy, or at least threaten to destroy, Earth’s entire population. In fact, a virus emerged in the 1970s that could have been just that lethal. Named after a river that traverses the Congo, the Ebola virus originally manifested itself in the interior of Africa in 1976. Two strains of the disease, with almost identical symptoms, affected humans: Ebola Zaire and Ebola Sudan. The Sudan version was deadly enough, killing 50 percent of those it infected; however, Zaire, with its 90 percent mortality rate, was even worse. The origins -- though not the cause -- of Ebola Sudan can be traced back to a single individual in a Sudanese town. Ebola Zaire seemed to erupt in over 50 villages simultaneously. Both strains quickly invaded local hospitals, where needle sharing and other unsanitary practices ensured the rapid spreading of the infection by bringing people into contact with contaminated blood. If the virus had been capable of spreading through the air, or if one infected person had unknowingly entered a large population center, Ebola might have become a worldwide epidemic. However, soon after these fierce outbreaks the virus died out, at least temporarily. Ebola was so lethal and killed so quickly (in a matter of days) that within a short period of time there was no one around to infect. Hospital workers in at least one case deserted their workplace in panic, thus halting the administering of potentially unclean, disease-spreading injections. But Ebola has not disappeared. With no known vaccination or cure in the offing, it seems only a matter of time until another epidemic erupts.
( 2 ) Disaster movies often portray catastrophes that destroy, or at least threaten to destroy, Earth’s entire population. In fact, a virus emerged in the 1970s that could have been just that lethal. Named after a river that traverses the Congo, the Ebola virus originally manifested itself in the interior of Africa in 1976. Two strains of the disease, with almost identical symptoms, affected humans: Ebola Zaire and Ebola Sudan. The Sudan version was deadly enough, killing 50 percent of those it infected; however, Zaire, with its 90 percent mortality rate, was even worse. The origins -- though not the cause -- of Ebola Sudan can be traced back to a single individual in a Sudanese town. Ebola Zaire seemed to erupt in over 50 villages simultaneously. Both strains quickly invaded local hospitals, where needle sharing and other unsanitary practices ensured the rapid spreading of the infection by bringing people into contact with contaminated blood. If the virus had been capable of spreading through the air, or if one infected person had unknowingly entered a large population center, Ebola might have become a worldwide epidemic. However, soon after these fierce outbreaks the virus died out, at least temporarily. Ebola was so lethal and killed so quickly (in a matter of days) that within a short period of time there was no one around to infect. Hospital workers in at least one case deserted their workplace in panic, thus halting the administering of potentially unclean, disease-spreading injections. But Ebola has not disappeared. With no known vaccination or cure in the offing, it seems only a matter of time until another epidemic erupts.
Of people stricken with Ebola Zaire, what percent die?
- A 10 percent
- B 50 percent
- C 80 percent
- D 90 percent
思路引導 VIP
請回頭閱讀文章的第二段，作者在那裡比較了兩種不同名稱的伊波拉病毒株。你能試著找出文中描述『致死率（mortality rate）』最高的那一個品系，並看看緊接在該名稱後面的數據是多少嗎？
🤖
AI 詳解
AI 專屬家教
太棒了！你能精準地從文章密集的資訊中，挑選出正確的數據，這代表你在閱讀長文時具備非常優秀的細節定位能力（Scanning）。
文本資訊的精確對位
這道題目的核心在於區分文中提到的兩株不同病毒株。文章第二段明確指出，伊波拉病毒有兩種影響人類的品系：蘇丹型（Ebola Sudan）與薩伊型（Ebola Zaire）。文中提到蘇丹型的致死率是 $50%$，緊接著使用語氣轉折詞 「however」 來強調薩伊型的情況更加嚴重，並清楚標示其致死率為 $90%$。因此，選擇 (D) 是完全正確的判斷。
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