—
— There are some biscuits in it.
A:What's in the box?
B:Are there biscuits?
C:Do you like biscuits?
{an}是首项a1=1,公差d=3的等差数列,如果an=2005,则序号n等于 ( )
一粒种子能长成参天大树,是与细胞的____ 、____ 和____ 有主要关系.