单选题A:Welcome to Bibury Systems. B:（）A Thank you.B That’s Research and Development. C No， thank you. D Yes.
题目
单选题
A:Welcome to Bibury Systems. B:（）
A
Thank you.
B
That’s Research and Development.
C
No， thank you.
D
Yes.
Thank you.
That’s Research and Development.
No， thank you.
Yes.