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

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

出自：国家开放大学《商务英语(本科)》

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