be good at可以用于比较等级吗

What animal is best at hitting baseball?

请问这里的 is best at 是 be good at 的最高级吗？

或者也可以用比较级吗？

是的。be good at 中的 good 可以用比较级和最高级。如：

be best at

Who in the class is best at math? 班上哪个的数学最好？

This boss is best at relating to his employees. 这位老板非常擅长和他的雇员们相处。

be better at

She was better at drawing than at painting. 她的绘图比画画好。

Some players are better at defending. 有的运动员较善于打防卫。

I was better at mathematics than other subjects. 我的数学学得比其他学科好。