1.2451修约至小数点后2位得（)。A.1.24B.1.25C.1.2D.1.255

2.2150修约至小数点后两位为（)A.2.23B.2.22C.2.24D.2.20E.2.21

2.2163修约至小数点后两位为（)A.2.23B.2.22C.2.24D.2.20E.2.21

2.2254修约至小数点后两位为（)A.2.23B.2.22C.2.24D.2.20E.2.21

2.2349修约至小数点后两位为（)A.2.23B.2.22C.2.24D.2.20E.2.21

2163修约至小数点后两位为（)A.2.23B.2.22C.2.24D.2.20E.2.212.2349修约至小数点后两位为（)A.2.

2. 2349修约至小数点后两位为A. 2.22 B. 2.23C. 2.21 D. 2.24E.