The sign reads “In case of _________ fire,break the glass and push ________ red button.”

题目

The sign reads “In case of _________ fire,break the glass and push ________ red button.”
A./; a B./; the C.the; the D.a; a

答案

The sign reads “In case of ____/_____ fire,break the glass and push ___the_____ red button.”
标志上写着"万一起火,打破玻璃按红色按钮"
in case of sth.以防万一 ,特指红色按钮,所以用定冠词the
选B