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题目内容
（西安石油大学-大学英语2）
20. What can be the main idea of the passage?
A) Two groups of people participated in an experiment.
B) Light-colored rooms make students do better on the exams.
C) People in nice-looking rooms tend to be biased in their opinion.
A) Two groups of people participated in an experiment.
B) Light-colored rooms make students do better on the exams.
C) People in nice-looking rooms tend to be biased in their opinion.
参考答案