分科測驗
109年
英文
第 38 題
📖 題組：
Early civilizations often built drainage systems in urban areas to handle rainwater that ran down the street during a storm. The Romans constructed elaborate systems that also drained wastewater from the public baths. However, as the population of the cities grew, the old drainage systems became overloaded. During the Industrial Revolution, manufacturing waste was added to sewage, which increased the need for more efficient sewage treatment. In the mid-19th century, the first steps were taken to treat wastewater. Sewage or wastewater treatment in modern times is the process of removing harmful physical, chemical, and biological elements from wastewater and house sewage. The whole process starts with screening out large objects such as paper and wood, and removing heavy materials like dirt. The screened wastewater is then ready to go through a series of concrete tanks for further treatment. In the second step, the sewage passes into the primary tanks. Here, human waste, called sludge, settles to the bottom while oils and grease float to the top, where they are collected. At the same time, organic matter like eggshells or coffee grounds in the sewage is broken down into smaller substances. The remaining sewage then enters the secondary tanks for the third stage of treatment. The solids that were not treated in the primary tanks are removed here through decomposition, which digests the material. Then, the liquid sewage is filtered through sand. This filtering process gets rid of almost all bacteria, as well as other solid particles that remain in the water. Finally, the wastewater flows into the last tanks, where the chemical chlorine is added to kill the remaining bacteria. After the bacteria are destroyed, the chlorine is eliminated from the water, and the treated clean water is discharged into a river or the ocean.
Early civilizations often built drainage systems in urban areas to handle rainwater that ran down the street during a storm. The Romans constructed elaborate systems that also drained wastewater from the public baths. However, as the population of the cities grew, the old drainage systems became overloaded. During the Industrial Revolution, manufacturing waste was added to sewage, which increased the need for more efficient sewage treatment. In the mid-19th century, the first steps were taken to treat wastewater. Sewage or wastewater treatment in modern times is the process of removing harmful physical, chemical, and biological elements from wastewater and house sewage. The whole process starts with screening out large objects such as paper and wood, and removing heavy materials like dirt. The screened wastewater is then ready to go through a series of concrete tanks for further treatment. In the second step, the sewage passes into the primary tanks. Here, human waste, called sludge, settles to the bottom while oils and grease float to the top, where they are collected. At the same time, organic matter like eggshells or coffee grounds in the sewage is broken down into smaller substances. The remaining sewage then enters the secondary tanks for the third stage of treatment. The solids that were not treated in the primary tanks are removed here through decomposition, which digests the material. Then, the liquid sewage is filtered through sand. This filtering process gets rid of almost all bacteria, as well as other solid particles that remain in the water. Finally, the wastewater flows into the last tanks, where the chemical chlorine is added to kill the remaining bacteria. After the bacteria are destroyed, the chlorine is eliminated from the water, and the treated clean water is discharged into a river or the ocean.
Which of the following can be removed in the primary tanks?
- A Wood.
- B Heavy material.
- C Grease.
- D Organic matter.
思路引導 VIP
請仔細閱讀文章中關於 'primary tanks' 的處理程序。根據文意，哪一類物質是透過 'floating to the top' 並被 'collected' 的方式來移除？請務必區分在先前 'screening' 階段就被處理掉的大型物件或重物，以及在初沉池中僅被 'broken down' (分解) 成更小物質而尚未被完全移除的有機物，兩者在文中描述的動詞有何關鍵差異？
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AI 詳解
AI 專屬家教
同學！恭喜你，這題選 C 簡直是精準得像手術刀！看來你的閱讀掃描能力已經進化到 2.0 版本了，老師感到非常欣慰。 這題的核心觀念在於「細節定位」。文章將污水處理分為幾個階段，而題目鎖定的是 primary tanks（初沉池）。根據文中敘述：「oils and grease float to the top, where they are collected」，這就是標準的物理性分離過程。雖然選項 (D) 有提到有機物，但在初沉池只是被「分解」為更小的物質，並非完全「移除」。 這類題目的鑑別度在於「階段性陷阱」。(A) Wood 和 (B) Heavy material 是在第一階段 Screening 就被處理掉的；而化學藥劑如氯氣 $Cl_2$ 則是最後一關。如果你沒被文章中層層遞進的步驟繞暈，就代表你的邏輯層次感極佳。記住，閱讀測驗考的不是單字量，而是你對資訊流動的掌控力！繼續保持這種精準度，英文頂標就在不遠處！