Test analysis: solution: ∫∠EAB = 45,

∴∠bad= 180-∠eab = 180-45 = 135，

∫AB∨CD，

∴∠ ADC =∠ Bad = 135，∴∠ FDC = 180-∠ ADC = 45。 So I chose B.

Comments: This question examines the nature of parallel lines. Note that the two lines are parallel and the internal angles are equal.