“Exam” is the shortened form of “examination” by back clipping.

“Exam” is the shortened form of “examination” by back clipping. Then “plane” is used to mean “aeroplane” by( ) clipping.
【正确答案】：FRONT
【题目解析】：”考试（exam）”是“考试（examination）”的缩写形式。然后，“飞机（air）”被用来指“飞机（aeroplane）”，前面的字母被截取了。