4000千克=______吨;5千克=______克.
(1)4000千克=4吨;
(2)5千克=5000克.
故答案为:4、5000.
--_________ is the supermarket from your home?
--Half an hour's ride. [ ]
A. How long
B. How far
C. How soon
D. How much
在下面的两个图中,画出各力的力臂.