Example 4. The following figures are composed of congruent squares. Which one can form a cube?



Translate the above text into English, please keep the original text's line breaks and format, and output the translation result directly.
Solution: This question mainly tests the students' spatial imagination ability. It can let students practice how to unfold a cube into a plane figure to familiarize themselves with the relationship between the front, back, top, bottom, left, and right six faces of the cube. The answer to this question is (A).