单项选择题

在信息经济学中，假设人是理性的。
A、正确
B、错误

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单项选择题

Choose the most appropriate answer by completing the sentences below or answering the questions.
1. From the text, we know that dreams have ___, _, and _____ significance.

A．historical; personal; religious
B．historical; social; religious
C．historic; personal; religious
D．historic; social; religious

单项选择题

禁毒会_毒品供给，可能与毒品相关的犯罪行为。
A、增加；增加
B、增加；减少
C、减少；增加
D、减少；减少