如图10,已知∠1=∠B,∠2=∠C,则下列结论不成立的是( ) A. AD∥BC B.∠B=∠C C.∠2+∠B=180° D.AB∥CD 答案:B提示:∠1=∠B可得AD∥BC,∠2+∠B=180°根据∠C=∠2可得AD∥BC故选B---May I take your order now? ---_______. A. No,I'm in trouble now B.Yes, we obey orders C. Yes, I'd like a dish of chicken D.No, I don't have a choice of meat