回复：有谁有这样的经历,请告诉小弟

我拿着邮寄回去的回美纸再次进入美国到底有什么---可能遇到的?怎么样对待?
-Based on the rule, this AP will be invalid and you might not be allowed to enter U.S. by the U.S. Customs official at the port of entry. But if you are lucky, it might work.

For the safe reason, I suggest you to go to the USCIS local office to get an emergency AP before you leave, and it may only take one or two days.