A:4π
B:3π
C:2π
D:π
把54.965精确到十分位是____
the money the government offered, the pupils in the poor area could go back to school again.
两盆冰水混合物,各自处于太阳下和背阴处,在盆内冰尚未熔化完以前,用温度计去测盆内水的温度时( )