【答案解析】Bank of China Beijing Branch April 10, 2003 Bank C Boston U.S.A Dear Sirs, Telex Not Tested We acknowledge receipt of your telex dated April 6, 2003 informing us of your payment of our banking charges USD5,389.00 by debiting your a/c with ns. But we would like to point out that the telex is not authenticated by a test. We should think that for telexes or cables involving your authorization or commitments, it would be best to have them tested as a measure to safeguard your interest and enable us to feel safe in carrying out your instructions. 　　　　　　　 Yours faithfully, 　　　　　　　 ××× 　　　　　　　　 Manager 　　　　　　　 Bank of China 　　　　　　　 Beijing Branch