题目

如图, , ,,.求的度数. 答案：【答案】55o【解析】试题分析：由∠BAC=∠DAE，可证∠1=∠CAE，再结合AB=AC，AD=AE，可用“SAS”证得：△BAD≌△CAE，从而可得∠ABD=∠2=30°，再由∠3=∠1+∠ABD就可求出结果了；试题解析：∵∠BAC=∠DAE，∴∠BAC-∠DAC=∠DAE-∠DAC，即∠1=∠CAE，∴在△BAD和△CAE中： ,∴△BAD≌△CAE（SAS）,∴∠ABD=∠2=30°，∴∠3=∠--What do you think of Pleasant Goat and Big Big Wolf (《喜洋洋与灰太狼》)？---It’s very    . Many children like watching it.A．carefulB．disappointingC．interestingD．poor