(2006? Guiyang) As shown in the figure, mark the "N" and "S" of the small magnetic needle above the energized solenoid according to the current direction in the energized solenoid.

According to the direction of current in the solenoid and the winding direction of the coil, the left end of the solenoid can be determined as N pole and the right end as S pole by Ampere's law.

When the small magnetic needle is at rest, according to the law of action between magnetic poles, different magnetic poles must be close to each other. Therefore, it can be determined that the left end of the small magnetic needle is S pole and the right end is N pole. So, the answer is as shown in the figure below: