0.75×0.6所得的积是一个三位小数.…______.
0.75×0.6=0.45;
0.45是两位小数;
所以,0.75×0.6所得的积是一个三位小数是错误的.
故答案为:错误.
Mary ____ her mother; she has big eyes and red hair, too.
A.looks after
B.looks for
C.takes up
D.takes after
正常人维持体内铁平衡需每天从食物摄取铁量()
A.0.1mg
B.0.5mg
C.1~1.5mg
D.2mg
E.2.5mg