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地方政府公務人員三等-養殖技術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:主旨掌握
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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
本文主旨探討「太平洋垃圾帶」的真實樣貌,指出其多為肉眼難見的微塑膠,並在最後一段強調清理工作面臨技術與資金的巨大挑戰,故選 B。

逐選項解析

AThe bio-diversity of Pacific Ocean.無關選項✕ 錯誤
文章內容主要探討海洋垃圾與塑膠污染,完全沒有提及太平洋的生物多樣性 (bio-diversity)。
BA pollution that is difficult to tackle.主旨掌握✓ 正確
文章通篇描述太平洋垃圾帶的形成、微塑膠難以察覺的特性,並在最後一段總結清理極度困難 (difficult to tackle),符合全文主旨。
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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