Psychologists are divided with regard to their attitudes toward ______. The phrase "token economies"(Line 1, Para. 5) probably

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问题 Psychologists are divided with regard to their attitudes toward ______.
The phrase "token economies"(Line 1, Para. 5) probably refers to ______.

选项 A、ways to develop economy
B、systems of rewarding students
C、approaches to solving problems
D、methods of improving performance

答案B

解析
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