Question

【题目】Once ___ light, the film will be damaged and get useless.

A.exposed to

B.exposed in

C.exposing in

D.expose under

Answer 1

【答案】A

【解析】句意为“一旦暴露在光下，胶卷就会被损坏而不能用了”。expose...to...表示“把……暴露在……中”之意，once引导省略的状语从句，补全为“Once it is exposed to...” 。