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.not more expensive to be built than a bridge B.not more expensive to be built than a rail C.. cheaper to be built than a rail D.not cheaper to be built than a bridge