A:for
B:off
C:by
国家社科基金重大项目在候选中国文化符号中,汉字 (汉语)排名第一。请说出与汉字一脉相承的最早的文字是( )
Welcome to Happy Days Club. It is a great place, fun and exciting.
Ball Game Center
You can play volleyball, tennis or other ball games here.
3:00 p.m.—10:00 p.m.
Tel: 375-4789
Swimming Pool
It's really cool!
4:00 p.m.—12:00 p.m.
Tel: 375-4753
Free Classes
Dancing
8:00 a.m.—12:00 a.m.
Tel: 375-4676
Skating
1:00 p.m.—6:00 p.m.
Tel: 375-4762
Kids Club
You can play or make friends here.
Tel: 375-4766
根据表格中的内容,选择最佳答案。
一对表现正常的夫妇,生了一个白化病的儿子(正常基因用A表示,白化病基因用a表示),这对夫妇的基因组成是( )