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地方政府公務人員三等-一般行政類科法學知識與英文(包括中華民國憲法、法學緒論、英文)11346單選題
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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(多為肉眼難見的微塑膠),並於末段總結清理此海洋污染面臨技術、時間與成本的巨大困難。

為什麼答案是 B

文章前三段說明垃圾帶的複雜性與微塑膠特性,最後一段具體點出清理的困境(誤捕生物、耗時、昂貴),完美契合「難以處理的污染 (A pollution that is difficult to tackle)」。

考點:無關細節考點:文章主旨考點:以偏概全考點:相反敘述
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