B

Test question analysis: Definition of an axially symmetrical figure: If a figure is folded along a straight line, and the parts on both sides of the straight line can overlap each other, this figure is called Axisymmetric graphics.

It can be seen from the figure that the axially symmetric figures are the first, second and fourth, so choose B.

Comments: This question is a basic application question and only requires students to be proficient Master the definition of axially symmetrical figures and you're done.