右图是某遗传病家族系谱图(该病由等基因A、a控制),请分析回答
Ⅱ5和Ⅲ9的基因型分别是()和()
参考答案:Aa;aa
Of all the sports shoes, John bought _____ pair. Then he had some money for socks. [ ]
A. a cheaper
B. the most wonderful
C. the least expensive
D. an expensive
( )是指总部拥有经营权,各加盟店拥有所有权的连锁形式。
A.加盟连锁
B.特许连锁
C.非法连锁
D.品牌连锁