At age 10, he managed his first 26, a description of a partly albino sparrow he observed in a public park.
答案：(B) publication
publication 意為「發表的著作」：他十歲就完成第一篇著作，內容是他在公園觀察到的一隻半白化麻雀；subscription（訂閱）、obligation（義務）、transaction（交易）語意都不合。
答對率 36%。
publication 你大概只記得「出版」這個動作，沒想到它也可以指「出版品、發表的作品」本身——抽象名詞轉成具體事物，這在英文很常見。
his first ___, a description of a partly albino sparrow he observed in a public park（…，一篇描述他在公園觀察到的半白化麻雀的文章）——逗號後面是同位語，直接說明空格是什麼：一篇 description（文章）。「看到空格後接逗號加一串名詞片語，那多半是同位語，答案就藏在裡面。」
publication（出版品）／subscription（訂閱）／obligation（義務）／transaction（交易）。四個字尾相同、字義毫無關聯，用形似字設計選項是典型的命題方式之一。
a publication（出版品）、publish a paper（發表論文）、a subscription to（訂閱）、have an obligation to V（有義務做…）。
Jean Piaget, a psychologist and pioneer in the study of child intelligence, was born in Switzerland in 1896. At age 10, he managed his first 26, a description of a partly albino sparrow he observed in a public park. At age 15, he 27 to devote his life to developing a biological explanation of knowledge.
He began his career as a zoologist, 28 mollusks and their adaptations to their environment. 29 age 21, he had already published 25 professional papers on that topic.
Later, after working with Alfred Binet in Paris, he became interested in levels of logic used by children taking standardized tests on intelligence. Piaget 30 to establish a body of psychology all his life and became a very influential figure in educational psychology. His works were all written originally in French and were later translated into English.