1.I'm better ____ math than her.填什么介词?2.翻译下 正如你所说,他是不可以相信的______________________________________

1.I'm better ____ math than her.填什么介词?
2.翻译下 正如你所说,他是不可以相信的______________________________________

at
Just as you said,he couldn't be believed.

at

at
be good at 擅长。这里是用比较级better
As you said, he is unbelievable!

1 at 是be good at 的变形。
2 AS you said,he is not worth trusting