Matter of Trust, a nonprofit organization, has an innovative solution for removing the large-scale oil spill in the Gulf of Mexico in 2010, using the ultimate renewable 22 : human hair, of which there is an unlimited supply.
答案：(D) resource
語意「使用終極的可再生『資源』：人類頭髮」，resource（資源）符合；equipment（設備）、ingredient（成分）、product（產品）都不合。
resource 你背的中文是「資源」，但腦中浮現的畫面多半是石油、煤礦、森林這類自然資源，很難把「人的頭髮」跟資源連在一起，所以會轉去猜 product 或 ingredient。這一格答對率 42%，是本批最低的一格。
關鍵在空格前面的形容詞 renewable（可再生的）。renewable resource（可再生資源）是固定的字詞搭配，和 natural resources（自然資源）、human resources（人力資源）、renewable energy（再生能源）同一組。再看冒號後面的同位語：human hair, of which there is an unlimited supply（人類的頭髮，而它的供應量是無限的）——「供應無限、源源不絕」講的正是資源的性質，等於把答案直接寫在旁邊了。
equipment（設備）指機具器材，頭髮不是設備，也不會被 renewable 修飾。ingredient（成分、原料）指的是混進成品裡的其中一項材料，例如食譜裡的成分；頭髮在這裡是直接拿去吸油的材料本身，不是被調配進去的成分。product（產品）是製造出來的成品，頭髮是天然長出來、剪下來的，不是生產出來的產品。
renewable resource（可再生資源）、natural resources（自然資源）、human resources（人力資源）、renewable energy（再生能源）、an unlimited supply of（無限的供應量）、equipment（設備，不可數名詞）、ingredient（成分、原料）、product（產品）、soak up（吸收）、oil spill（漏油、油污外洩）。
Hair usually gets greasy when it has not been washed because it soaks up oil—hence the need for shampoo! 21 this oil-absorbing feature might not always be so great for our hygiene, it can be great for the environment.
Matter of Trust, a nonprofit organization, has an innovative solution for removing the large-scale oil spill in the Gulf of Mexico in 2010, using the ultimate renewable 22 : human hair, of which there is an unlimited supply. Since its founding in 1998, Matter of Trust has collected donations of human hair and animal fur to 23 the thousands of oil spills that happen each year. The hair and fur are made into mats and brooms and sent to 24 waters to absorb the oil.
Across the United States each day, 300,000 pounds of hair and fur are cut. Matter of Trust is helping organize the collection of this 25 hair and fur through thousands of salons, pet groomers, and ranchers. Individuals can also speak to local hair stylists and pet groomers about sending in leftover hair and fur.