已知点P(-3,2),点P关于x轴的对称点坐标为______.
根据平面直角坐标系中对称点的规律可知,点P(-3,2)关于x轴的对称点坐标为(-3,-2).
My money_____. I must go to the bank to draw some of my savings out before I've none in hand. [ ]
A. has run out
B. is running out
C. has been run out
D. is being running out
将洋葱根尖细胞中的基因,染色体及细胞核作一比较,此三者关系为 [ ]
A.染色体>细胞核>基因
B.细胞核>基因>染色体
C.细胞核>染色体>基因
D.基因>染色体>细胞核