Complete the following statement

Complete the following statements with proper words or expressions according to the course book.“Exam” is the shortened form of “examination” by back clipping. Then “quake” is used to mean “earthquake” by( )clipping.
【正确答案】：FRONT
【题目解析】：“exam”是“examination”的缩略形式，采用了尾部截短法。“quake（地震）”的意思是“earthquake（地震）”，是通过前部截短法得到的。