The article that arrived yesterday is too badly written to be _________.
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In college, English is a required course and psychology is a(n) _________ course.
In consequence, computer handling and storage has become increasingly _________.
Sea water can be made _________ by distilling out the salt.
C2G是( )的缩写。
A. 企业内部电子商务
B. 企业与企业的电子商务
C. 企业与消费者的电子商务
D. 企业与政府的电子商务
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