初级卵母细胞在第一次成熟分裂时排除(),形成次级卵母细胞。
参考答案:极体
When he applied for(申请)a _______in the office of the local newspaper he was told to see the manager.
A.location
B.career
C.position
D.profession
在18÷9=2中,______能被______整除;______能整除______.