回复：很多高手后来做竞赛题就不行。

I should, never heard AMC before joined wenxuecity. So D1 missed.

D2 is too later, she told me she would hater math if I push her. But I still send her to the math expert I just knew. She will not listen to me. Son is ok, he just failed entering schools mathcourt team (passed first wound), but enter academical challenge team. Well when he get 7th and 8 grade, should be able to make mathcourt team. Right now for AMC8, he can make 18 to 23 for old tests. Try to push him to 25 when 7th grade, but usually kids like teacher more than parents, let see.