填空题 Directions:Read the following passage. After reading it, you are required to complete the information by filling in the blanks marked 46 through 50 in the table below. For each blank,you should write no more than 3 words.
International trade is the exchange of goods and services produced in one country for goods and services produced in another country. In most cases, countries do not trade the actual goods and services. Rather,they use the income, or money, from the sale of their products to buy the products of another country.
Trade among countries allows people in each country to use their energies in doing what they do best. That is, it lets them specialize. Trade and specialization go hand in hand and enable each of us to have more products to use and more different kinds of products at the lowest possible cost.
Nations trade for many reasons. First, they trade because there are differences in natural resources in different parts of the world. The plants that can be grown are different. The mineral resources are also different. Second, nations trading with one another is that it pays to specialize. Specialization makes the best use of a country' s productive resources—its natural resources, the skill of its workers, and its factories.
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