补全对话。
A:____I help you ?
B: Yes, do you have ____T-shirts?
A: Yes, we do. What ____do you want?
B: Yellow.
A: It's just ____for you.
B: ____is it?
A: It's 25 yuan.
细胞中的遗传信息主要存在于( )
下面注音有错误的一项是( )