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地方政府公務人員三等-電子工程類科法學知識與英文(包括中華民國憲法、法學緒論、英文)113 年第 46 題單選題考點:無關選項考點:主旨歸納
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While “Great Pacific Garbage Patch” is a term often used by the media, it does not paint an accurate picture of the marine debris problem in the North Pacific Ocean. Marine debris concentrates in various regions of the North Pacific, not just in one area. The exact size, content, and location of the “garbage patches” are difficult to accurately predict. The name “Pacific Garbage Patch” is not visible with satellite or aerial photographs. While higher concentrations of litter items can be found in this area, much of the debris is actually small pieces of floating plastic that are not immediately evident to the naked eye. The entire Great Pacific Garbage Patch is bounded by the North Pacific Subtropical Gyre. The circular motion of the gyre draws debris into this stable center, where it becomes trapped. While many different types of trash enter the ocean, plastics make up the majority of marine debris for two reasons. First, plastic’s durability, low cost, and malleability mean that it’s being used in more and more consumer and industrial products. Second, plastic goods do not biodegrade but instead, break down into smaller pieces. It is possible to sail through “garbage patch” areas in the Pacific and see very little or no debris on the water’s surface. Debris found in any region of the ocean can easily be ingested by marine species causing choking, starvation, and other impairments. Cleaning up marine debris is not as easy as it sounds. Many microplastics are the same size as small sea animals, so nets designed to scoop up trash would catch these creatures as well. Even if we could design nets that would just catch garbage, the size of the oceans makes this job far too time-consuming to consider. Besides, it is not likely that any country will pay the expensive bill.

What is the main idea of this passage?

AThe bio-diversity of Pacific Ocean.
BA pollution that is difficult to tackle.正確答案
CThe decomposition of plastic products.
DA spectacle that can be seen from satellites.
答案與詳解
B
正確答案
本文主旨為探討「太平洋垃圾帶」的真實樣貌(以微塑膠為主)以及清理海洋廢棄物所面臨的巨大困難。

逐選項解析

AThe bio-diversity of Pacific Ocean.無關選項✕ 錯誤
選項意為「太平洋的生物多樣性」。文章僅在提及微塑膠會被海洋生物誤食,以及清理時會誤捕小生物時提到生物,並未探討生物多樣性。
BA pollution that is difficult to tackle.主旨歸納✓ 正確
選項意為「一個難以處理的污染」。文章詳細描述了海洋塑膠污染的特性(微小、分散),並在最後一段具體說明清理的困難(技術限制、耗時、成本高昂),完美契合文章主旨。
CThe decomposition of plastic products.✕ 易錯陷阱
DA spectacle that can be seen from satellites.✕ 易錯陷阱

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