听力原文：The bank's foreign exchange department has to keep constant track of the positions in the various currencies. (7) A.The bank's foreign exchange department has to record the positions in the various currencies. B.The hank's foreign exchange department has to record the positions in the various currencies. C.The bank's foreign branches department has to record the various foreign currency liabilities. D.The bank's foreign branches department has to record the positions in the various currencies.