听力原文：This is an announcement from the Society Office, attention please. The report by

Mr. Milford about the atomic energy and its use tomorrow afternoon won't be able to come at the appointed time owing to some urgent business. His report is put off to next Thursday, May 10th, 2009, at 2: 00 p. m. in the assembly hall of our company. Sorry for the delay of the report.

What is informed in the announcement？

A．The delay of the report

B．The invitation of the Society Office

C．The introduction about Mr. Milford

D．The content of the report