A:①②
B:①③
C:②③
D:①②③
Could you please tell me the way the London Eye?
①若|a|=b,则a=b; ②若|a|>b,则|a|>|b|;
③若 a=−b ,则 (−a)2=b ;④若|a|<|b|,则a<b;
其中正确的判断的个数是( )