A camera and a viewing system are built 26 these glasses.
答案：(B) into
【句型】built into 字詞搭配「內建於」；beyond（超越）、from、with 都不合。
build 你想到「建造」，於是覺得後面接哪個介系詞好像都差不多。其實 build 配上不同介系詞，意思差很多，這一格考的正是這件事。
句意是「一台相機和一套顯示系統被裝在這副眼鏡裡」——相機不是擺在眼鏡旁邊，而是做進眼鏡的結構裡，成為眼鏡的一部分。表示「進入內部並成為其中一部分」的介系詞是 into，be built into 就是「內建於……」。把被動還原成主動驗算一次：The designers built a camera and a viewing system into these glasses.（設計者把相機和顯示系統做進這副眼鏡裡），into 後面接的是「被裝進去的那個東西」，位置與語意都對得上。你身邊就有現成的例子：built-in camera（內建相機）、a built-in wardrobe（嵌入式衣櫃）。
beyond（超越、在……之外）方向剛好相反，會變成裝在眼鏡外面。from 表來源，be built from 是「用某種材料建成」，例如 The house was built from stone.，這裡講的不是材料。with 可以表工具或配備，語意偏「附帶什麼」，但這一格要的是「裝進內部」的方位關係，into 才精準。順帶一提，build on（以……為基礎進一步發展）是同一個字另一個常考的搭配，109 年第 18 格就把它放進選項當誘答，兩個一起記起來。
be built into（內建於……）、built-in（內建的、嵌入式的）、build on（以……為基礎發展）、be built from／of（由……建成）、build up（累積、增強）、a viewing system（顯示系統）、be set to V（被設定成……）、play tricks with（對……耍花招）。
Researchers from a university in Japan have developed "diet-glasses" that play tricks with one's perception of food, which could be helpful to people on a diet.
A camera and a viewing system are built 26 these glasses. As the wearer brings the food toward their mouth, the camera captures an image of the food. It replays the image back through the glasses after processing it on an attached computer. The size of the food they are about to eat is magnified while 27 of their hand remains normal. Their brain is 28 tricked into thinking they are eating more than they really are. The study showed that participants who wore the glasses ate 9.3 less than those who did not wear them.
The team has also developed a special device which uses scent bottles and visual trickery to make the wearers of these glasses think that the plain snack they are eating is 29 than it actually is. The device, for instance, can be set to 30 one's favorite flavor. Recent experiments with this device showed that 80 of the participants were fooled by the smell. For example, some participants thought that they were eating a chocolate snack, but in fact they were not.