单选题 The price in the foreign exchange market is called ______.
A. the trade surplus B. the exchange rate
C. the money price D. the currency rate

【正确答案】 B
【答案解析】汇率又译为“汇价”,“外汇行市”,一般用于外汇市场两种不同货币之间的比价。trade surplus贸易顺差,C、D说法很少见。