题目内容
Intra-industry trade can be explained by product differentiation, economies of scale, seasons of the year, and transportation costs.
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According to the theory of intra-industry trade, many manufactured goods undergo a trade cycle in which the home country initially is an exporter and eventually becomes an importer of a product.
The product-life-cycle theory applies best to trade in primary products in the short run.
According to the product-life-cycle theory, the first stage of a product's trsde cycle is when it is introduced to the home market.
According to the product-life-cycle theory, the last stage of a product's trade cycle is when it becomes an import-competing good.
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