When a person takes a polygraph test, four to six wires, called sensors, are 22 to different parts of his body.
答案：(B) attached
【句型】be attached to 字詞搭配「被連接/附著在」，表示電線被接到身體不同部位；adapted（適應）、related（相關）、restricted（限制）都不合。
四個選項後面都能接 to：be adapted to、be attached to、be related to、be restricted to，所以「看到 to 就選」這一招在這裡完全失效，非得看語意不可 — 答對率只有 49%。另外 related 也很容易被挑走，因為「電線跟身體有關」中文讀起來勉強說得通。
先看主詞是什麼：four to six wires, called sensors（四到六條稱為感應器的電線），是實體的東西；要做的事是把電線「接上」身體不同部位。attach 的核心意思正是「把某物實體地固定或連接到另一物上」，句型是 attach A to B。還原成主動句最快：The examiner attaches four to six wires to different parts of his body.（測謊人員把四到六條電線接到他身體的不同部位。）主動句一還原，動詞該填什麼一目了然。這個字你其實天天在用：電子郵件的「附件」就叫 attachment，attach a file to an email（把檔案附加在郵件上）跟本題是同一個字、同一個句型。下一句也回頭確認：The sensors pick up signals from the person's blood pressure, pulse, and perspiration.（感應器擷取受測者血壓、脈搏和排汗的訊號。）電線得真的貼在身上，才擷取得到訊號。
be adapted to（適應於；被改編成）主詞通常是人或生物，例 adapt to a new environment（適應新環境）。be related to（與……有關；與……有親屬關係）講的是抽象關聯，例 Smoking is related to lung cancer.（吸菸與肺癌有關。）電線和身體不是「有關聯」，是實際接上去。be restricted to（僅限於）例 restricted to members only（僅限會員），語意完全不合。
attach A to B（把 A 附加或連接到 B）、be attached to（被連接到；依戀、捨不得）、an attachment（附件；依戀）、adapt to（適應）、be related to（與……有關）、be restricted to（僅限於）、pick up signals（接收訊號）、blood pressure（血壓）。
A polygraph machine, also known as a "lie detector," is a common part of criminal investigations. The instrument is used to measure 21 a person's body reacts to questions. The theory underlying it is that lying is stressful, and that this stress can be measured and recorded on a polygraph machine.
When a person takes a polygraph test, four to six wires, called sensors, are 22 to different parts of his body. The sensors pick up signals from the person's blood pressure, pulse, and perspiration. 23 the process of questioning, all the signals are recorded on a single strip of moving paper. Once the questions are finished, the examiner analyzes the results to determine if the person tested 24 truthful.
Well-trained examiners can usually detect lying with a high degree of 25 when they use a polygraph. However, because different people behave differently when lying, a polygraph test is by no means perfect.