黄体体积和功能于排卵后7～8日(相当于月经周期21～22日)达最高峰，直径1～2 cm，外观色黄。
参考答案：对
—I'm thinking of the test tomorrow; I'm afraid I can't pass this time.
—________! I'm sure you'll make it.[ ]
A. Go ahead
B. Good luck
C. No problem
D. Cheer up
国家对生猪实行统一纳税、分别经营和（）
A.定点屠宰
B.集中检疫
C.定点屠宰和集中检疫
D.分散检疫
E.分散宰杀
