8. (3 points) Five judges score a gymnast. If the highest score is removed, the average score is 9.46. If the lowest score is removed, the average score is 9.66. How many more points is the highest score than the lowest score? 

Translate the above text into English, please retain the original text's line breaks and format, and output the translation result directly.
【Solution】Solution: $9.66 \times 4-9.46 \times 4$
$$
\begin{array}{l}
=(9.66-9.46) \times 4 \\
=0.2 \times 4 \\
=0.8 \text { (points); }
\end{array}
$$

Answer: The highest score is 0.8 points more than the lowest score. Therefore, the answer is: 0.8.