如图表示某高等植物卵细胞的染色体数目和形态示意图.此植物体细胞的染色体组数目和染色体数目分别是( )
A:12和36
B:16和48
C:8和24
D:6和24
地处赤道附近的乞力马扎罗山山顶终年积雪,成为“赤道雪峰”,其主要原因是( )
—What do you think of your new job, Jim?
—It's _______. I do exactly the same thing every day.