题目

A man claiming to be a pastor(牧师) apparently tried to stiff a waiter on a tip, explaining that his work for God allowed him not to leave one. A photo of the receipt, posted to Reddit.com, shows a bill for $34.93 with an automatic 18 percent gratuity(小费) (or $6.29) added above a blank space for an additional tip. “I give God 10%,” the diner wrote on the receipt, scratching out the automatic tip. “Why do you get 18?” He then wrote “Pastor” above his signature, and an emphatic “0” where the additional tip would be. (The automatic gratuity, however, had already been24、已知AD是△ABC的外角∠EAC的平分线，且AD∥BC，则△ABC的边一定满足AB=AC或∠B=∠C．