单项选择题

The phrase" token economies" ( Para. 5 ) probably refers to ______.

A．ways to develop economy
B．systems of rewarding students
C．approaches to solving problems
D．methods of improving performance
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单项选择题
What will they do next Wednesday
A．Have a snack.
B．Go to the library.
C．Exchange information about sources.
D．Look for sources at the snack bar.
单项选择题
What is the man planning to do next year
A．Do research on comparative cultures.
B．Study in graduate school.
C．Study business in Japan.
D．Start a company.
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