把低级单位的单名数改写成高级单位的单名数。+`5w;b(C)f,l8Y
(1)160分米=7_,q;U7Y2W*C.b;_米+`5w;b(C)f,l8Y
(2)45000克=(l1j3k1K4R+D0u._千克+`5w;b(C)f,l8Y
(3)800平方厘米=6?9W,F:M9U2S0])z1T.Z平方分米+`5w;b(C)f,l8Y
(4)500000平方米=)r/Z5k1D'B8[*C/Q9`*U公顷+`5w;b(C)f,l8Y