NO.PZ2023071902000091
问题如下：
Question Which of the following arguments is against free trade
选项：
A.it can exacerbate income inequality.B.
it amplifies the mean production costs for goods and services.
C.it hinders foreign research and development in an economy.
解释：
Solution
- Correct. Detractors of open trade emphasize the likelihood of heightened income disparities and the potential job displacement in developed nations due to intensified import competition.
- Incorrect. With open trade, firms often reap the benefits of broader economies of scale, leading to a decrease in the average cost of production by tapping into expansive markets.
- Incorrect. Embracing trade can pave the way for a richer exchange of knowledge, a more fluid interchange of technical proficiency, and a keen sense of evolving consumer predilections in worldwide markets. It can also inspire the establishment of robust, high-quality institutions and strategies that invigorate domestic innovation. Studies, like the one by Coe and Helpman in 1995, indicate the advantageous influence of international research and development (R&D) on a nation's productivity, an effect that amplifies when a nation becomes more receptive to international trade.
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为什选A，不知道对应讲义哪个知识点。
