有关正常成人子宫,不正确的是()
A.子宫重约50g
B.子宫长7~8cm
C.子宫位于骨盆中央坐骨棘水平以下
D.子宫腔容积约为5ml
E.子宫腔呈上宽下窄的三角形
参考答案:C
He couldn't buy the dictionary because he had ______ money with him. [ ]
A. a few
B. few
C. a little
D. little
为什么荧光发射谱的形状和激发光波长无关?