三、克漏字測驗【請依照段落上下文意，選出最適當的答案】
第一篇：
       The letter of credit has been used in Europe since ancient times. Letters of credit were traditionally governed byinternationally recognized rules and procedures __21__ by national law. The International Chamber of Commerce oversaw thepreparation of the first Uniform Customs and Practice for Documentary Credits (UCP) in 1933, creating a voluntary frameworkfor commercial banks to apply to__22__ worldwide.
        In the late 19th century and early 20th century, travelers commonly carried a circular letter of credit__23__ by arelationship bank, which allowed the beneficiary to withdraw cash from other banks along their journey. This type of letter ofcredit was eventually replaced by traveler’s checks, credit cards and automated teller machines.                Although letters of credit first existed only as paper documents, they were regularly issued by telegraph in the late 19thcentury, and by telex in the __24__ half of the 20th century. Beginning in 1973 with the creation of SWIFT, banks began tomigrate to electronic data interchange as a __25__ of controlling costs, and in 1983 the UCP was amended to allow“teletransmission” of letters of credit. By the 21st century, the vast majority of LCs were issued in electronic form and entirely“paperless” LCs were becoming more common.
【題組】21.
(A) rather
(B) as well
(C) would rather
(D) rather than