关于胚胎工程的应用与前景的叙述错误的是（ ）
A：胚胎移植的优势可以充分发挥雌性优良个体的繁殖潜力
B：胚胎干细胞可以用于治疗人类的帕金森综合征
C：八分胚的分割和移植效率最高
D：受体对移入子宫的外来胚胎基本不发生免疫排斥
已知数列{an}满足an+1= 12 an2﹣ 12 nan+1（n∈N*），且a1=3．
Actor wanted by Movie Company
Can you sing and dance? Can you work with other people?
Can you work evenings and weekends?
If you want to be an actor, please call the Movie Company at 9935673.
Wanted
Do you like to talk with different people? Do you like a busy but interesting job? Do you like to join the TV station?
Work time: 8: 30a.m.—5: 50p.m., 5 days a week.
Tel: 2433571, 2433572, 2433573
Add: No. 24, Rose Building, Wilton Street
We need Teachers
Do you love children? Are you friendly to children?
Do you like to teach children English, math, history or biology?
Call the Green Children's School at 5113470 or send your e-mail to Children@yahoo.com
按要求，写单词。
put（过去式）____
食品安全，关乎民生．购买食品时要关注包装上的（ ）
①保质期 ②添加剂的种类 ③生产日期 ④厂家厂址 ⑤质量安全标志．
