单项选择题

While modulation/demodulation technology was being standardized for the most recent modems, several other peripheral standards were also being developed（）

A. auxiliary
B. notable
C. relevant
D. elemental

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单项选择题
The book, published （）, revived our interest in the author who had just died.

A. anonymously
B. privately
C. recently
D. posthumously
单项选择题
Your advice would be______valuable to him, who is at present at his wit’s end.
A. exceedingly
B. excessively
C. extensively
D. exclusively
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