1. The time period during which our reproductive organ become mature is called ___?__.
2. For human beings, pregnancies usually take ___?___ weeks.
3. ____?____ is the fluid coming out from penis which contains sperms.
4. An ____?____is released from the ovary around every 28 days.
請幫我完成填充! 緊急! thx
Science問題 15分
2008-02-18 3:43 am
回答 (1)
2008-02-20 3:04 am
✔ 最佳答案
1. puberty2. 40
3. semen
4. ovum / egg
收錄日期: 2021-04-24 00:32:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080217000051KK03894