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【单选题】
6. The system was ________ though as it required the mailman to find the recipient and collect the money, or if the recipient refused the letter, it had to be sent back to the originating post office unpaid.
A.
inefficient
B.
ineffective
C.
efficient
D.
effective
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】7. It was not until the early 1940s that stamps were first ________ to the Postal system.
A.
invented
B.
inclined
C.
introduced
D.
induced
【单选题】8. Because of the development of technology and electronic substitution, the mail volume has decreased ________.
A.
conservatively
B.
considerately
C.
concisely
D.
considerably
【单选题】13. By the mid-eighteenth century, this ________ network push thirteen quarrelsome provinces toward developing a new, independent-minded, egalitarian culture more American than British.
A.
rudimentary
B.
authorized
C.
appreciation
D.
debuted
【单选题】9. A stamp design includes several elements required for it to ________ its purpose satisfactorily.
A.
apply
B.
accomplish
C.
acquire
D.
adapt