The device, for instance, can be set to 30 one’s favorite flavor.
答案：(B) release
release 在此是「釋放、散發」：這套裝置可以設定成釋放出使用者最喜歡的味道；impress（使印象深刻）、bother（困擾）、attract（吸引）的受詞都不會是 flavor。
release 你大概只記得「發行」（release a new album 發行新專輯）與「釋放（人）」。用於氣體、能量、氣味時，它的意思是「散發、釋出」：Plants release oxygen.（植物釋出氧氣）。
四個選項均為及物動詞，填入 be set to 之後文法上都能成立，因此判斷的依據在受詞的性質。空格的受詞是 one's favorite flavor，需要一個能以氣味為受詞的動詞，release 正合此意。作答線索在後兩句 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.（近期以這套裝置進行的實驗顯示，八成受試者被氣味騙過；例如有些受試者以為自己在吃巧克力零食，事實上並不是），可知這套裝置的作用是散發氣味。凡是四個選項均為及物動詞的題目，判斷步驟相同：先看受詞是人還是事物，再檢查各選項慣用的受詞是否與空格一致。
impress、bother、attract 的受詞通常是人：impress the audience（使觀眾印象深刻）、bother sb（打擾某人）、attract customers（吸引顧客）。本句受詞為 flavor，三者的搭配都不相符，可一併排除。
release a scent／gas（散發氣味／氣體）、release a film（電影上映）、be released from（自…獲釋）、be set to V（被設定成…）。
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.