A:城市性质,城市规划
B:城市职能,产业布局
C:环境质量,城市规模
D:地表形态,经济水平
—Which hobby do you think ______ the least time?
—Collecting stamps.
—Would you mind picking up the last cigarette on the playground?
—_______. I'll do it right away.
细胞有丝分裂过程中,染色体的复制发生在
如图是人体中枢神经系统结构示意图,请写出下列描述中各字母所指部位的名称.