放射带
参考答案：初级卵母细胞质膜的绒毛和滤泡细胞的绒毛突起呈犬齿交错状分布，卵母细胞表面出现一层放射状结构。
Lucy didn’t make mistakes in the math exam. She is _____ in my class.
A．the most careful
B．the most careless
C．more careful
D．much careful
试述测定玻璃最高退火温度的方法？
