40÷（1-16）
=40÷56，
=48（千克）．
答：妈妈的体重是48千克．
Western journalists claim to be loyal the truth only． But they never bothered to question the truthfulness of the Dalai Lama’s claims．
A．to
B．about
C．with
D．for
0.5mm厚度规格的带钢厚度公差是（）mm。
A.±0.01
B.±0.02
C.±0.03
D.±0.04
