问题如下：
According to the Heckscher–Ohlin model, when trade opens:
选项：
A.the scarce factor gains relative to the abundant factor in each country.
B.the abundant factor gains relative to the scarce factor in each country.
C.income is redistributed between countries but not within each country.
解释：
B is correct.
As a country opens up to trade, it has a favorable impact on the abundant factor, and a negative impact on the scarce factor. This is because trade causes the output mix to change and therefore changes the relative demand for the factors of production. Increased output of the export product increases demand for the factor that is used intensively in its production, while reduced output of the import product decreases demand for the factor used intensively in its production. Because the export (import) product uses the abundant (scarce) factor intensively, the abundant factor gains relative to the scarce factor in each country.
考点：Heckscher–Ohlin model
根据HO模型，一国资源禀赋丰富的具有比较优势，比如一国劳动力资源丰富，那么该国就应该出口劳动密集型产品，发展劳动密集型产业。那么劳动力在该国就会被大量需求，劳动力就能获得更高的生产报酬分配。相反该国资本资源稀缺，那么它就从外国进口资本密集型产品。资本要素在该国就不受待见， 不仅受到进口品的冲击，能够分的的生产报酬也比较少。所以这题选B。
A选项说反了
C选项说收入会在两国之间重新分配，这句话是对的。具体怎么分配，是看一国的贸易条件更接近本国还是对手方封闭时候的价格比。但是C选项第二句话错误。收入每个国家之间也会再分配。
收入分配的具体操作是什么？是看一国的贸易条件更接近本国还是对手方封闭时候的价格比（具体解释一下）
如何在国家之内进行再分配？
