填空题
A—exchange rate；B—foreign exchange certificate C—selling rate；D—change E—credit card；F—currency G—service charge；H—traveler’s cheque I—mail transfer；J—Bank of China K—coin；L—remittance M—cash；N—ATM O—memo
A．either by train or by bus B．only by train C．neither by train nor by car D．both by train and by bus