Matter of Trust is helping organize the collection of this 25 hair and fur through thousands of salons, pet groomers, and ranchers.
答案：(A) unneeded
語意「這些『不需要的』頭髮和毛皮」，unneeded（不需要的，即被剪掉丟棄的頭髮）符合，呼應前文「每天被剪掉的30萬磅頭髮和毛皮」；overthrown（被推翻）、excluded（被排除）、disconnected（斷開連接）都不合。
四個選項分別以 un-、over-、ex-、dis- 開頭，看起來全都帶著「否定、反向」的味道，所以很容易憑感覺挑一個。這一格的鑑別度高達 73，是本批最高的一題——意思是搞懂線索的人幾乎都對，沒抓到線索的人就只能猜。
關鍵在 this 這個指示詞。this 一定是指回前面提過的東西，所以往前一句看：Across the United States each day, 300,000 pounds of hair and fur are cut.（全美國每天有三十萬磅的頭髮與毛皮被剪下來）。被剪下來、沒人要、本來會被丟掉的頭髮，就是 unneeded（不需要的）。拆字也很直觀：un-（不）加上 needed（被需要的），字面就是「不被需要的」。順帶分清楚一組容易混的字：unneeded 是「（現在）沒有被用到、多出來的」，unnecessary 是「沒有必要的、多此一舉的」，兩者語感不同。
overthrown 是 overthrow（推翻）的過去分詞，受詞通常是政權、制度，例如 overthrow the government（推翻政府）。excluded（被排除在外的）需要有一個明確被排除出去的範圍或群體。disconnected（斷了連結的）用在電源、網路或人際關係上。三個字放進來，都跟「被剪掉、沒人要」搭不上。
unneeded（不需要的、用不到的）、unnecessary（沒必要的）、leftover（剩下的、剩餘的）、overthrow（推翻）、exclude（排除）、disconnect（切斷連結）、the collection of（……的蒐集）、hair stylist（髮型設計師）、pet groomer（寵物美容師）。
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.