A:1.6 m
B:2.4 m
C:3.2 m
D:4.8 m
计算1+(﹣2)+3+(﹣4)+5+(﹣6)得( )
— He is such a kind and generous man that we all him very much.
选出不同类的一项( )
读下列四幅地形剖面图,分析回答: