单项选择题

The ______ of electronic computers has opened up new ways of data analysis for the scientist.

A．advent
B．adverse
C．advert
D．advise
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单项选择题
A growing number of people are pursuing advanced degrees without stepping ______ ． a university campus.
A．into
B．off
C．up
D．onto
单项选择题
The WTO meeting ______ with no agreement on launching a broad round of trade liberalization negotiations.
A．broke off
B．broke in
C．broke up
D．broke out
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