APT是高级可持续攻击。
正确
暂无解析
Dr.Yangworked______threedaysago.
Thespeed____Tomdriveshiscaristoohigh.
题目：InvitationLetter邀请与约见函
Hepaidtheboy$10forwashingtenwindows,mostof____hadn'tbeencleanedforatleastayear.
Mr.Greenisusedto_________twoapplesafterluncheveryday.
