— . I believe even eating a little fast food is also harmful to my health .
查字典。
①“杰”字的音序是____,组词为____。
②“瘦”字的音序是____,组词为____。
设奇函数f(x)在(0,+∞)上为增函数,且f(1)=0,则不等式fx-f-xx的解集是____