...it refers to the 11 to one's neighbors as a standard for social status or the accumulation of material goods.
答案：(D) comparison
the comparison to one's neighbors 意為「與鄰居比較」，正是 keeping up with the Joneses（與人攀比）的核心；reaction（反應）、attachment（依附）、similarity（相似）都無法與 as a standard for social status 構成合理語意。
答對率 33%。
comparison 你認得，難在要先看懂 keeping up with the Joneses 這個文化片語。Joneses 是英文裡最常見的姓氏之一，用來代稱「隔壁鄰居」；整句意思是「跟鄰居比排場、不能輸給人家」，很接近中文的「輸人不輸陣」。
it refers to the ___ to one's neighbors as a standard for social status（把…鄰居當作社會地位的衡量標準）——既然是「當作衡量標準」，那個動作必然是「比較」。而且空格後面接的是 to，comparison to／with sb 正是字詞搭配。
similarity 是「相似之處」，語意接近卻不對——重點不是「像不像鄰居」，而是「跟鄰居比高下」；reaction 需要接 to 某個刺激；attachment to 是「對…的依戀」。
in comparison to／with（與…相比）、compare A with B（把 A 與 B 比較）、refer to（指的是）、as a standard for（作為…的標準）。
"Keeping up with the Joneses" is a catchphrase in many parts of the English-speaking world. Just like "keeping up appearances," it refers to the 11 to one's neighbors as a standard for social status or the accumulation of material goods. Generally speaking, the more luxuries people have, the higher their value or social status—or 12 they believe. To fail to "keep up with the Joneses" is thus perceived as revealing socio-economic inferiority or, as the Chinese would put it, a great loss of face.
The 13 was popularized when a comic strip of the same name was created by cartoonist Arthur R. "Pop" Momand. The strip was first published in 1916 in the New York World, and ran in American newspapers for 28 years before it was eventually 14 into books, films, and musical comedies. The "Joneses" of the title were rich neighbors of the strip's main characters and, interestingly, they were merely 15 but never actually seen in person in the comic strip.