单项选择题

It is suggested that developments in international cooperation are often the result of ______.

A．friendships formed by scholars at meetings
B．articles in learned journals
C．the work of international agencies
D．programs initiated by governments
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单项选择题
It has been stated in the passage that the growth of specialist societies and periodicals has helped scholars to ______.
A．spend less time traveling
B．cut down research costs
C．develop their ideas more quickly
D．keep up with current developments
单项选择题
According to the passage, scholars and students are great travelers because ______.
A．standards are higher at foreign universities
B．their governments encourage them to travel
C．salaries and conditions are better abroad
D．they are eager for new knowledge
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