1．ence, ance结尾的名词：
接受 accept — acceptance
出现/外表 appear — appearance
执行 perform — performance
抵制 resist — resistance
指导 guide — guidance
进入 enter — entrance
保险 insure — insurance
帮助 assist — assistance
忍受 endure — endurance/tolerate — tolerance
存在 exist — existence
发生 occur — occurrence
查阅/参考 refer — reference
偏好 prefer — preference
不同 differ — difference
