∵a2n+1=12,
∴8a6n+3-1=8(a2n+1)3-1=8×18-1=0.
细胞核分裂时,染色体的变化最明显。组成染色体的物质是[ ]
A.糖类和蛋白质
B.DNA和蛋白质
C.脂质和核酸
D.无机盐和DNA
— Could you please _____ your watch to me?
— OK. Here you are. [ ]
A. show
B. to show
C. showing