根据短文内容，填人适当的词，完成句子。每空词数不限。

I’m Kitty. Today the clothes at Xingxing Clothes Store are on sale. So I want to buy some clothes for my grandparents, my parents, and myself. Let me have a look. This yellow sweater is at a very good price--only 15 dollars. And it’s OK for my grandfather. For my grandmother, I want to buy a pair of black shoes. It’s very comfortable (舒适的). How about this blue T-shirt? Oh, my father can wear it to play basketball. And-there are many socks in green, yellow, black, blue, red, and white. I know my mother likes red very much, so I will buy these red ones. I need pants, so I will take these blue ones.

小题1:The          is only 15 dollars.

小题2:Kitty wants to buy          for her grandmother.

小题3:The blue T-shirt is for her      

小题4:Kitty’s mother likes red        

小题5:Kitty needs          , so she will buy some.

(1)鉴定一只羊是否纯种；(2)在一对相对性状中区分显隐性；(3)不断提高小麦抗病品种的纯合度；(4)检验杂种F₁的基因型。可采用的方法依次是[ ]

A．杂交、自交、测交、测交

B．测交、杂交、自交、测交

C．测交、测交、杂交、自交

D．杂交、杂交、杂交、测交